DATASHEET ISL28006 FN6548 Rev 6.00 November 22, 2013 Micropower, Rail to Rail Input Current Sense Amplifier with Voltage Output The ISL28006 is a micropower, uni-directional high-side and low-side current sense amplifier featuring a proprietary rail-to-rail input current sensing amplifier. The ISL28006 is ideal for high-side current sense applications where the sense voltage is usually much higher than the amplifier supply voltage. The device can be used to sense voltages as high as 28V when operating from a supply voltage as low as 2.7V. The micropower ISL28006 consumes only 50A of supply current when operating from a 2.7V to 28V supply. The ISL28006 features a common-mode input voltage range from 0V to 28V. The proprietary architecture extends the input voltage sensing range down to 0V, making it an excellent choice for low-side ground sensing applications. The benefit of this architecture is that a high degree of total output accuracy is maintained over the entire 0V to 28V common mode input voltage range. The ISL28006 is available in fixed (100V/V, 50V/V, 20V/V and Adjustable) gains in the space saving 5 Ld SOT-23 package and the 6 Ld SOT-23 package for the adjustable gain part. The parts operate over the extended temperature range from -40C to +125C. Features * Low Power Consumption. . . . . . . . . . . . . . . . . . . . . . 50A, Typ * Supply Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.7V to 28V * Wide Common Mode Input. . . . . . . . . . . . . . . . . . . . 0V to 28V * Gain Versions - ISL28006-100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100V/V - ISL28006-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V/V - ISL28006-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V/V - ISL28006-ADJ . . . . . . . . . . . . . . . . ADJ (Min Gain = 20V/V) * Operating Temperature Range . . . . . . . . . . . . -40C to +125C * Packages. . . . . . . . . . . . . . . . . . . . . .5 Ld SOT-23, 6 Ld SOT-23 Applications * Power Management/Monitors * Power Distribution and Safety * DC/DC, AC/DC Converters * Battery Management/Charging * Automotive Power Distribution Related Literature * See AN1532 for "ISL28006 Evaluation Board User's Guide" SENSE RSENSE SENSE +5VDC RSENSE +12VDC OUTPUT +5VDC ISL28006 + - ISENSE +12VDC 0.6 +5VDC OUTPUT 0.2 +5VDC ISL28006 + ISENSE +5VDC SENSE +1.0VDC MULTIPLE OUTPUT POWER SUPPLY RSENSE +5VDC ISL28006 + +1.0VDC OUTPUT ISENSE +1.0VDC FIGURE 1. TYPICAL APPLICATION FN6548 Rev 6.00 November 22, 2013 -40C +25C +125C GAIN 100 0 -0.2 -0.4 -0.6 -0.8 -1 -1.2 -1.4 GND +100C 0.4 ACCURACY (%) +12VDC 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VRS+ (V) FIGURE 2. GAIN ACCURACY vs VRS+ = 0V TO 28V Page 1 of 26 ISL28006 Block Diagram VCC I = 2.86A VSENSE VSENSE HIGH-SIDE AND LOW-SIDE SENSING RS+ R1 VCC I = 2.86A gmHI HIGH-SIDE AND LOW-SIDE SENSING RS+ R1 RS- gmHI RSR2 R2 + 1.35V + OUT - 1.35V Rf VCC Rf VCC IMIRROR R3 OUT - gmLO IMIRROR Rg R5 FB R3 Rg R5 gmLO VSENSE VSENSE R4 R4 GND GND FIXED GAIN PARTS ADJUSTABLE GAIN PART Pin Configurations ISL28006-ADJ (6 LD SOT-23) TOP VIEW ISL28006-100, 50, 20 (5 LD SOT-23) TOP VIEW GND 1 OUT 2 FB 1 5 RSFIXED GAIN VCC 3 6 GND ADJ. GAIN OUT 2 VCC 3 4 RS+ 5 RS4 RS+ Pin Descriptions ISL28006-100, 50, 20 (5 LD SOT-23) ISL28006-ADJ (6 LD SOT-23) PIN NAME 1 6 GND 1 FB 2 2 OUT Amplifier Output 3 3 VCC Positive Power Supply 4 4 RS+ Sense Voltage Non-inverting Input 5 5 RS- Sense Voltage Inverting Input DESCRIPTION Power Ground Input Pin for External Resistors FB VCC RS- CAPACITIVELY COUPLED ESD CLAMP OUT RS+ GND FN6548 Rev 6.00 November 22, 2013 Page 2 of 26 ISL28006 Ordering Information PART NUMBER (Notes 1, 2, 3) PART MARKING GAIN PACKAGE Tape & Reel (Pb-Free) PKG. DWG. # ISL28006FH100Z-T7 100V/V BDJA (Note 4) 5 Ld SOT-23 P5.064A ISL28006FH100Z-T7A 100V/V BDJA (Note 4) 5 Ld SOT-23 P5.064A ISL28006FH50Z-T7 50V/V BDHA (Note 4) 5 Ld SOT-23 P5.064A ISL28006FH50Z-T7A 50V/V BDHA (Note 4) 5 Ld SOT-23 P5.064A ISL28006FH20Z-T7 20V/V BDGA (Note 4) 5 Ld SOT-23 P5.064A ISL28006FH20Z-T7A 20V/V BDGA (Note 4) 5 Ld SOT-23 P5.064A ISL28006FHADJZ-T7 ADJ BDFA (Note 4) 6 Ld SOT-23 P6.064 ISL28006FHADJZ-T7A ADJ BDFA (Note 4) 6 Ld SOT-23 P6.064 ISL28006FH-100EVAL1Z 100V/V Evaluation Board ISL28006FH-50EVAL1Z 50V/V Evaluation Board ISL28006FH-20EVAL1Z 20V/V Evaluation Board ISL28006FH-ADJEVAL1Z Adjustable Evaluation Board NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL28006. For more information on MSL please see techbrief TB363. 4. The part marking is located on the bottom of the part. FN6548 Rev 6.00 November 22, 2013 Page 3 of 26 ISL28006 Absolute Maximum Ratings Thermal Information Max Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28V Max Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA Max Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5V Max Input Voltage (RS+, RS-, FB) . . . . . . . . . . . . . . . . . . . GND - 0.5V to 30V Max Input Current for Input Voltage <GND - 0.5V. . . . . . . . . . . . . . . . 20mA Output Short-Circuit Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indefinite Di-Electrically Isolated PR40 Process . . . . . . . . . . . . . . . . . . . Latch-up free ESD Rating Human Body Model (Tested per JESD22-A114F) . . . . . . . . . . . . . . . . 4kV Machine Model (Tested per EIA/JESD22-A115-A) . . . . . . . . . . . . . . 200V Charged Device Model (Tested per JESD22-C101D) . . . . . . . . . . . . . .1.5kV Thermal Resistance (Typical) JA (C/W) JC (C/W) 5 Ld SOT-23 (Notes 5, 6) . . . . . . . . . . . . . . . 190 90 6 Ld SOT-23 (Notes 5, 6) . . . . . . . . . . . . . . . 180 90 Maximum Storage Temperature Range . . . . . . . . . . . . . .-65C to +150C Maximum Junction Temperature (TJMAX) . . . . . . . . . . . . . . . . . . . . .+150C Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . .-40C to +125C CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTES: 5. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. 6. For JC, the "case temp" location is taken at the package top center. Electrical Specifications VCC = 12V, VRS+ = 0V to 28V, VSENSE = 0V, RLOAD = 1M, TA = +25C unless otherwise specified. Boldface limits apply over the operating temperature range, -40C to +125C. Temperature data established by characterization. PARAMETER VOS (Input Offset Voltage) DESCRIPTION Gain = 100 (Notes 8, 9) CONDITIONS VCC = VRS+ = 12V, VSENSE = 20mV to 100mV MIN (Note 7) TYP MAX (Note 7) UNIT -250 60 250 V 300 V 2.5 mV 2.8 mV 300 V -300 VCC = 12V, VRS+ = 0.2V, VSENSE = 20mV to 100mV -2.5 -1.2 -2.8 Gain = 50, Gain = 20 (Notes 8, 9) VCC = VRS+ = 12V, VSENSE = 20mV to 100mV -300 60 -450 VCC = 12V, VRS+ = 0.2V, VSENSE = 20mV to 100mV -2.8 450 V 2.8 mV 3.2 mV 300 V 450 V -1.2 3.1 mV 3.4 mV 0.041 1.2 A 1.5 A 6 A 7 A -1.2 -3.2 Adjustable, Gain = 21 Rf = 100k, Rg = 5k (Notes 8, 9) VCC = VRS+ = 12V, VSENSE = 20mV to 100mV -300 60 -450 VCC = 12V, VRS+ = 0.2V, VSENSE = 20mV to 100mV -3.1 -3.4 IRS+, IRS IRS+ (+ Input Bias Current) Leakage Current Gain = 100 VCC = 0V, VRS+ = 28V VRS+ = 2V, VSENSE = 5mV VRS+ = 0V, VSENSE = 5mV 4.7 -500 -432 nA -600 Gain = 50, Gain = 20 VRS+ = 2V, VSENSE = 5mV VRS+ = 0V, VSENSE = 5mV nA 4.7 -700 6 A 8 A -432 nA -840 ADJ Gain = 101 Rf = 100k, Rg = 1k VRS+ = 2V, VSENSE = 5mV VRS+ = 0V, VSENSE = 5mV -500 -600 FN6548 Rev 6.00 November 22, 2013 nA 4.7 -432 6 A 7 A nA nA Page 4 of 26 ISL28006 Electrical Specifications VCC = 12V, VRS+ = 0V to 28V, VSENSE = 0V, RLOAD = 1M, TA = +25C unless otherwise specified. Boldface limits apply over the operating temperature range, -40C to +125C. Temperature data established by characterization. (Continued) PARAMETER IRS (- Input Bias Current) DESCRIPTION G = 100, 50, 20, ADJ CONDITIONS MIN (Note 7) VRS+ = 2V, VSENSE = 5mV VRS+ = 0V, VSENSE = 5mV -125 TYP MAX (Note 7) UNIT 5 50 nA 75 nA -45 nA -130 nA CMRR Common Mode Rejection Ratio VRS+ = 2V to 28V 105 115 dB PSRR Power Supply Rejection Ratio VCC = 2.7V to 28V, VRS+ = 2V 90 105 dB VFS Full-scale Sense Voltage VCC = 28V, VRS+ = 0.2V, 12V 200 G (Gain) (Note 8) ISL28006-100 100 V/V ISL28006-50 50 V/V ISL28006-20 20 V/V GA (Gain Accuracy) ISL28006-ADJ 20 Gain = 100 (Note 10) VCC = VRS+ = 12V, VSENSE = 20mV to 100mV -0.2 0.7 % -1 1 % Gain = 50, Gain = 20 (Note 10) VCC = VRS+ = 12V, VSENSE = 20mV to 100mV VCC = 12V, VRS+ = 0.1V, VSENSE = 20mV to 100mV VCC = 12V, VRS+ = 0.1V, VSENSE = 20mV to 100mV ADJ Gain = 21 Rf = 100k, Rg = 5k (Note 10) VOA (Total Output Accuracy) mV Gain = 100 (Note 11) -0.25 ADJ Gain = 21 Rf = 100k, Rg = 5k (Note 11) % -0.35 0.7 % -1 1 % -2.2 2.2 % -2.3 2.3 % VCC = VRS+ = 12V, VSENSE = 20mV to 100mV -0.65 1 % VCC = 12V, VRS+ = 0.1V, VSENSE = 20mV to 100mV -2.2 -0.33 -1 VCC = VRS+ = 12V, VSENSE = 100mV -0.33 % -0.7 0.7 % 0.9 % -1.25 VCC = VRS+ = 12V, VSENSE = 100mV -0.7 VCC = 12V, VRS+ = 0.1V, VSENSE = 100mV -4.7 % 0.7 -0.9 VCC = 12V, VRS+ = 0.1V, VSENSE = 100mV % 2.2 2.3 -0.9 VCC = VRS+ = 12V, VSENSE = 100mV 1.05 -2.3 VCC = 12V, VRS+ = 0.1V, VSENSE = 100mV Gain = 50, Gain = 20 (Note 11) V/V % 0.9 % 1.8 % -5.2 2.3 % -0.7 1.05 % -0.9 1.2 % 1.8 % -4.7 -1.41 -1.41 2.3 % VOH Output Voltage Swing, High VCC - VOUT IO = -500A, VCC = 2.7V, VSENSE = 100mV, VRS+ = 2V -5.2 39 50 mV VOL Output Voltage Swing, Low VOUT IO = 500A, VCC = 2.7V, VSENSE = 0V, VRS+ = 2V 30 50 mV ROUT Output Resistance VCC = VRS+ = 12V, VSENSE = 100mV, IOUT = 10A to 1mA 6.5 ISC+ Short Circuit Sourcing Current VCC = VRS+ = 5V, RL = 10 4.8 mA ISC- Short Circuit Sinking Current VCC = VRS+ = 5V, RL = 10 8.7 mA FN6548 Rev 6.00 November 22, 2013 Page 5 of 26 ISL28006 Electrical Specifications VCC = 12V, VRS+ = 0V to 28V, VSENSE = 0V, RLOAD = 1M, TA = +25C unless otherwise specified. Boldface limits apply over the operating temperature range, -40C to +125C. Temperature data established by characterization. (Continued) PARAMETER ICC DESCRIPTION Gain = 100 Gain = 50, 20, VCC Slew Rate BW-3dB tS tS Power-up CONDITIONS MIN (Note 7) VRS+ > 2V, VSENSE = 5mV VRS+ > 2V, VSENSE = 5mV TYP MAX (Note 7) UNIT 50 59 A 62 A 62 A 63 A 62 A 63 A 28 V 50 ADJ Gain = 21 Rf = 100k, Rg = 5k VRS+ > 2V, VSENSE = 5mV Supply Voltage Guaranteed by PSRR 2.7 50 Gain = 100 Pulse on RS+ pin, VOUT = 8VP-P (Figure 75) 0.58 0.76 V/s Gain = 50 Pulse on RS+ pin, VOUT = 8VP-P (Figure 75) 0.58 0.67 V/s Gain = 20 Pulse on RS+ pin, VOUT = 3.5VP-P (Figure 75) 0.50 0.67 V/s ADJ Gain = 21 Rf = 100k, Rg = 5k Pulse on RS+ pin, VOUT = 3.5VP-P (Figure 75) 0.50 0.67 V/s Gain = 100 VRS+ = 12V, 0.1V, VSENSE = 100mV 110 kHz Gain = 50 VRS+ = 12V, 0.1V, VSENSE = 100mV 160 kHz Gain = 20 VRS+ = 12V, 0.1V, VSENSE = 100mV 180 kHz ADJ, Gain = 101 (Figure 65) VRS+ = 12V, 0.1V, VSENSE = 100mV, Rf = 100k, Rg = 1k 40 kHz ADJ, Gain = 51 (Figure 65) VRS+ = 12V, VSENSE = 100mV, Rf = 100k, Rg = 2k 78 kHz VRS+ = 0.1V, VSENSE = 100mV, Rf = 100k, Rg = 2k 122 kHz ADJ, Gain = 21 (Figure 65) VRS+ = 12V, VSENSE = 100mV, Rf = 100k, Rg = 5k 131 kHz VRS+ = 0.1V, VSENSE = 100mV, Rf = 100k, Rg = 5k 237 kHz Output Settling Time to 1% of Final Value VCC = VRS+ = 12V, VOUT = 10V step, VSENSE > 7mV 15 s VCC = VRS+ = 0.2V, VOUT = 10V step, VSENSE > 7mV 20 s Capacitive-Load Stability No sustained oscillations 300 pF Power-Up Time to 1% of Final Value VCC = VRS+ = 12V, VSENSE = 100mV 15 s VCC = 12V, VRS+ = 0.2V, VSENSE = 100mV 50 s VCC = VRS+ = 12V, VSENSE = 100mV, overdrive 10 s Saturation Recovery Time NOTES: 7. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design. 8. DEFINITION OF TERMS: * VSENSEA = VSENSE @ 100mV * VSENSEB = VSENSE @ 20mV * VOUTA = VOUT @ VSENSEA = 100mV * VOUTB = VOUT @ VSENSEB = 20mV V OUT A - V OUT B * G = GAIN = ------------------------------------------------------ V SENSE A - V SENSE B V OUT A 9. VOS is extrapolated from the gain measurement. V OS = V SENSE A - ----------------G G MEASURED - G EXPECTED 10. % Gain Accuracy = GA = --------------------------------------------------------------------- 100 G EXPECTED VOUT MEASURED - VOUT EXPECTED 11. Output Accuracy % VOA = ------------------------------------------------------------------------------------------- 100, where VOUT = VSENSE X GAIN and VSENSE = 100mV VOUT EXPECTED FN6548 Rev 6.00 November 22, 2013 Page 6 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. VRS+ 2.0 1.4 VTH(L-H) = 1.52V 1.2 0.8 VOUT (G = 100) 0.6 0.4 0.2 1.2 0 0 0.2 0.4 0.6 0.8 1.0 1.2 TIME (ms) 1.4 1.6 1.8 2.0 FIGURE 3. HIGH-SIDE and LOW-SIDE THRESHOLD VOLTAGE VRS+(L-H) and VRS+(H-L), VSENSE = 10mV 6 4 G100, VOUT = 2V G50, VOUT = 1V G20, VOUT = 400mV 0.4 0 8 RL = 1M VCC = 12V 0.8 G100, VOUT = 1V G50, VOUT = 500mV G20, VOUT = 200mV 10 VOUT (G = 100) 1.6 VTH(H-L) = 1.23V 1.0 VRS+ (V) VOLTS (V) 12 2.4 VRS+ 1.6 0 0.2 0.4 0.6 0.8 1.0 1.2 TIME (ms) 2 1.4 1.6 GAIN 100 10 10 8 8 VOUT (V) VOUT (V) 0 2.0 12 GAIN 100 6 6 4 4 2 2 0 10 20 30 40 50 60 70 80 90 0 100 0 10 20 30 TIME (s) FIGURE 5. LARGE SIGNAL TRANSIENT RESPONSE VRS+ = 0.2V, VSENSE = 100mV GAIN 100 18 VSENSE = 20mV, 100mV 16 14 VOS (V) 12 10 8 6 4 2 0 -250 -200 -150 -100 -50 VOS (V) 0 50 100 FIGURE 7. VOS (V) DISTRIBUTION AT +25C, VRS+ = 12V, QUANTITY: 100 FN6548 Rev 6.00 November 22, 2013 40 50 60 TIME (s) 70 80 90 100 FIGURE 6. LARGE SIGNAL TRANSIENT RESPONSE VRS+ = 12V, VSENSE = 100mV 20 UNITS 1.8 FIGURE 4. VOUT vs VRS+, VSENSE = 20mV TRANSIENT RESPONSE 12 0 VOUT (V) 1.8 2800 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 -200 -400 GAIN 100 VSENSE = 20mV, 100mV +125C +100C -40C 0 2 4 6 8 +25C 10 12 14 16 18 20 22 24 26 28 VRS+ (V) FIGURE 8. VOS vs VRS+ Page 7 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) 250 GAIN 100 VSENSE = 20mV, 100mV +125C +100C 200 150 +100C +25C 100 VOS (V) VOS (V) 2800 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 -200 -400 +25C -40C 50 0 -50 -40C -100 +125C -150 GAIN 100 VSENSE = 2mV, 20mV -200 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 -250 2 2.0 4 6 8 VRS+ (V) FIGURE 9. VOS vs VRS+ 3000 +100C FIGURE 10. VOS vs VCC, VRS+= 12V 0.6 GAIN 100 VSENSE = 2mV, 20mV +25C 2000 +100C 0.4 -40C ACCURACY (%) -40C +125C 0 -1000 0 -0.2 -0.4 -0.6 -0.8 -1.0 -2000 GAIN 100 VSENSE = 20mV, 100mV -1.2 -3000 2 4 6 8 -1.4 10 12 14 16 18 20 22 24 26 28 VCC (V) FIGURE 11. VOS vs VCC, VRS+ = 0.1V 0.6 +100C 0 ACCURACY (%) ACCURACY (%) 0.2 -0.2 -0.4 -40C -0.6 +125C -0.8 -1.0 GAIN 100 VSENSE = 20mV, 100mV -1.2 0 0.2 0.4 0.6 0.8 1.0 1.2 VRS+ (V) 1.4 1.6 1.8 FIGURE 13. GAIN ACCURACY vs VRS+ = 0V TO 2V FN6548 Rev 6.00 November 22, 2013 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VRS+ (V) FIGURE 12. GAIN ACCURACY vs VRS+ = 0V TO 28V +25C 0.4 -1.4 +25C +125C 0.2 1000 VOS (V) 10 12 14 16 18 20 22 24 26 28 VCC (V) 2.0 3.0 2.5 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5 +100C +25C -40C +125C GAIN 100 VSENSE = 2mV, 20mV 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VCC (V) FIGURE 14. GAIN ACCURACY vs VCC, VRS+ = 12V Page 8 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) 0.2 0 0.1 ACCURACY (%) -2 +25C -4 -40C +100C -6 -8 +125C -10 -12 -14 -16 GAIN 100 VSENSE = 2mV, 20mV -18 -20 2 4 6 8 VOA PERCENT ACCURACY (%) 2 GAIN 100 0.0 -0.1 -0.2 -0.3 -40C -0.4 +125C -0.5 -0.6 +100C -0.7 -0.8 -0.9 +25C -1.0 1 10 12 14 16 18 20 22 24 26 28 10 100 IOUT(A) VCC (V) FIGURE 15. GAIN ACCURACY vs VCC, VRS+ = 0.1V 40 35 GAIN 100 20 GAIN 100 VSENSE = 20mV, 100mV VRS+ = 12V 0 15 VOS (V) GAIN (dB) 25 VRS+= 100mV 5 -5 VCC = 12V -15 V SENSE = 100mV AV = 100 -25 RL = 1M -35 10 100 VRS+ = 12V -20 -40 -60 -80 1k 10k FREQUENCY (Hz) 100k -100 -50 1M FIGURE 17. GAIN vs FREQUENCY VRS+ = 100mV/12V, VSENSE = 100mV, VOUT = 50mVP-P 180 100pF 1000pF 30 25 50 75 TEMPERATURE (C) 100 125 PHASE () 10nF 0 VCC = 5V VRS- = 3V AV = 100 VOUT = 400mVP-P -40 1.E+03 1.E+04 -20 -60 -180 1.E+06 FIGURE 19. CAPACITIVE LOAD DRIVE GAIN vs FREQUENCY 10nF 20 -140 FREQUENCY (Hz) FN6548 Rev 6.00 November 22, 2013 60 -100 1.E+05 NO CL 4.7nF 100 NO CL 10 100pF 1000pF 140 4.7nF 20 GAIN (dB) 0 220 40 -30 -25 FIGURE 18. VOS (V) vs TEMPERATURE 50 -20 10m FIGURE 16. NORMALIZED VOA vs IOUT 45 -10 1m VCC = 5V VRS- = 3V AV = 100 VOUT = 400mVP-P -220 1.E+03 1.E+04 1.E+05 1.E+06 FREQUENCY (Hz) FIGURE 20. CAPACITIVE LOAD DRIVE PHASE vs FREQUENCY Page 9 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) 0.30 0.25 0.20 GAIN 100 VRS+ = 12V -0.6 VOUT ERROR (%) GAIN ACCURACY (%) -0.5 GAIN 100 VSENSE = 20mV, 100mV VRS+ = 12V 0.15 0.10 0.05 0 -0.7 -0.8 -0.9 -0.05 -0.10 -50 -25 0 25 50 75 100 -1 -50 125 -25 0 TEMPERATURE (C) FIGURE 21. GAIN ACCURACY (%) vs TEMPERATURE GAIN 50 18 VSENSE = 20mV, 100mV 16 12 VOS (V) UNITS 14 10 8 6 4 2 -250 -200 -150 -100 -50 VOS (V) 0 50 100 2800 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 -200 -400 +125C -40C 0 2 4 6 8 +25C 10 12 14 16 18 20 22 24 26 28 FIGURE 24. VOS vs VRS+ 250 GAIN 50 VSENSE = 2mV, 0mV 200 150 +100C +100C 100 VOS (V) VOS (V) +100C VRS+ (V) GAIN 50 VSENSE = 20mV, 100mV +125C 125 GAIN 50 VSENSE = 20mV, 100mV FIGURE 23. VOS (V) DISTRIBUTION AT +25C, VRS+ = 12V, QUANTITY: 100 2800 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 -200 -400 100 FIGURE 22. VOUT ERROR (%) vs TEMPERATURE 20 0 25 50 75 TEMPERATURE (C) +25C -40C 50 +125C 0 -50 +25C -100 -150 -40C -200 0 0.2 0.4 0.6 0.8 1.0 1.2 VRS+ (V) FIGURE 25. VOS vs VRS+ FN6548 Rev 6.00 November 22, 2013 1.4 1.6 1.8 2.0 -250 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VCC (V) FIGURE 26. VOS vs VCC, VRS+ = 12V Page 10 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) 3000 +100C 0.6 +25C 0.4 2000 ACCURACY (%) VOS (V) 1000 -40C +125C 0 -1000 GAIN 50 VSENSE = 2mV, 0mV 2 4 6 8 0.4 +25C 0 ACCURACY (%) ACCURACY (%) -0.8 -0.2 -0.4 +100C -0.6 -0.8 -1.0 -40C +125C -1.2 0 0.2 0.4 0.6 GAIN 50 VSENSE = 20mV, 100mV 0.8 1.0 1.2 VRS+ (V) 1.4 1.6 1.8 2.0 FIGURE 29. GAIN ACCURACY vs VRS+ = 0V TO 2V 3.0 2.5 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5.0 0 0.1 +25C -40C +100C -6 -8 -10 -12 +125C -14 -16 GAIN 50 VSENSE = 2mV, 20mV -18 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VCC (V) FIGURE 31. GAIN ACCURACY vs VCC, LOW-SIDE FN6548 Rev 6.00 November 22, 2013 VOA PERCENT ACCURACY (%) 0.2 -4 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VRS+ (V) +100C +25C -40C +125C GAIN 50 VSENSE = 2mV, 20mV 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VCC (V) FIGURE 30. GAIN ACCURACY vs VCC, HIGH-SIDE 2 -2 GAIN 50 VSENSE = 20mV, 100mV FIGURE 28. GAIN ACCURACY vs VRS+ = 0V TO 28V 0.2 ACCURACY (%) +125C -0.6 -1.4 10 12 14 16 18 20 22 24 26 28 VCC (V) 0.6 -20 +100C -0.4 -1.2 FIGURE 27. VOS vs VCC, VRS+ = VRS+ = 0.1V -1.4 0 -0.2 -1.0 -2000 -3000 -40C +25C 0.2 GAIN 50 0.0 -0.1 -0.2 -0.3 -40C -0.4 -0.5 +125C -0.6 -0.7 +100C -0.8 -0.9 -1.0 1 +25C 10 100 IOUT(A) 1m 10m FIGURE 32. NORMALIZED VOA vs IOUT Page 11 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) -70 GAIN 50 35 -90 25 -110 15 VOS (V) GAIN (dB) 45 VRS+= 100mV 5 -5 VRS+ = 12V VCC = 12V -15 V SENSE = 100mV -25 AV = 50 RL = 1M -35 10 100 GAIN 50 VSENSE = 20mV, 100mV VRS+ = 12V -130 -150 -170 -190 -210 1k 10k FREQUENCY (Hz) 100k -230 -50 1M FIGURE 33. GAIN vs FREQUENCY VRS+ = 100mV/12V, VSENSE = 100mV, VOUT = 50mVP-P 220 40 180 1000pF 0 -10 -20 -30 10nF VCC = 5V -60 -180 1.E+05 10nF -20 -140 1.E+04 VCC = 5V VRS- = 3V AV = 50 VOUT = 400mVP-P -220 1.E+03 1.E+06 1.E+04 FREQUENCY (Hz) 0.10 GAIN 50 0.08 VRS+ = 12V 0.06 VOUT ERROR (%) GAIN ACCURACY (%) 0.16 1.E+06 FIGURE 36. CAPACITIVE LOAD DRIVE PHASE vs FREQUENCY GAIN 50 VSENSE = 20mV, 100mV VRS+ = 12V 0.17 1.E+05 FREQUENCY (Hz) FIGURE 35. CAPACITIVE LOAD DRIVE GAIN vs FREQUENCY 0.18 100pF 20 -100 VRS- = 3V AV = 50 VOUT = 400mVP-P -40 1.E+03 125 NO CL 60 NO CL 10 100 4.7nF 100 PHASE () GAIN (dB) 20 25 50 75 TEMPERATURE (C) 1000pF 140 100pF 4.7nF 0 FIGURE 34. VOS (V) vs TEMPERATURE 50 30 -25 0.15 0.14 0.13 0.12 0.04 0.02 0 -0.02 -0.04 -0.06 -0.08 0.11 0.1 -50 -0.10 -25 0 25 50 75 100 TEMPERATURE (C) FIGURE 37. GAIN ACCURACY (%) vs TEMPERATURE FN6548 Rev 6.00 November 22, 2013 125 -0.12 -50 -25 0 25 50 75 TEMPERATURE (C) 100 125 FIGURE 38. V OUT ERROR (%) vs TEMPERATURE Page 12 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) 30 2800 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 -200 -400 GAIN 20 VSENSE = 20mV, 100mV 25 VOS (V) UNITS 20 15 10 5 0 -250 -200 -150 -100 -50 0 VOS (V) 50 100 150 GAIN 20 VSENSE = 20mV, 100mV 0 2 4 GAIN 20 VSENSE = 2mV, 20mV 150 100 +25C -40C +100C 50 0 +25C -50 -40C -100 +125C -150 -200 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 -250 2 2 FIGURE 41. VOS vs VRS+ 3000 +100C 4 6 8 10 12 14 16 18 20 22 24 26 28 VCC (V) +25C FIGURE 42. VOS vs VCC, VRS+ = 12V 0.6 GAIN 20 VSENSE = 2mV, 20mV 0.4 2000 +125C 0 -1000 ACCURACY (%) -40C -40C +25C 0.2 1000 VOS (V) 10 12 14 16 18 20 22 24 26 28 200 VRS+ (V) 0 -0.2 +125C -0.4 +100C -0.6 -0.8 -1.0 -2000 GAIN 20 VSENSE = 20mV, 100mV -1.2 -3000 +25C 250 GAIN 20 VSENSE = 20mV, 100mV +125C -40C FIGURE 40. VOS vs VRS+ VOS (V) VOS (V) +100C 8 +100C VRS+ (V) FIGURE 39. VOS (V) DISTRIBUTION AT +25C, VRS+ = 12V, QUANTITY: 100 2800 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 -200 -400 6 +125C 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VCC (V) FIGURE 43. VOS vs VCC, VRS+ = 0.1V FN6548 Rev 6.00 November 22, 2013 -1.4 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VRS+ (V) FIGURE 44. GAIN ACCURACY vs VRS+ = 0V TO 28V Page 13 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) 0.6 GAIN 20 VSENSE = 20mV, 100mV 0.4 +25C 0 ACCURACY (%) ACCURACY (%) 0.2 -0.2 -0.4 -0.6 +100C -40C -0.8 -1.0 -1.2 -1.4 +125C 0 0.2 0.4 0.6 0.8 1.0 1.2 VRS+ (V) 1.4 1.6 1.8 2.0 FIGURE 45. GAIN ACCURACY vs VRS+ = 0V TO 2V 0.2 0 0.1 VOA PERCENT ACCURACY (%) 2 -4 +25C +100C -6 -40C -8 -10 -12 +125C -14 -16 GAIN 20 VSENSE = 2mV, 20mV -18 -20 2 4 6 8 GAIN 20 VSENSE = 2mV, 20mV +100C 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VCC (V) GAIN 20 0.0 -0.1 -0.2 +25C -0.3 -0.4 +125C -0.5 -0.6 +100C -0.7 -0.8 -40C -0.9 10 VCC (V) FIGURE 47. GAIN ACCURACY vs VCC, LOW-SIDE 100 IOUT(A) 1m 10m FIGURE 48. NORMALIZED VOA vs IOUT -20 GAIN 20 35 GAIN 20 VSENSE = 20mV, 100mV VRS+ = 12V -40 25 -60 15 VOS (V) GAIN (dB) -40C +125C -1.0 1 10 12 14 16 18 20 22 24 26 28 45 +25C FIGURE 46. GAIN ACCURACY vs VCC, HIGH-SIDE -2 ACCURACY (%) 3.0 2.5 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5.0 VRS+ = 100mV 5 -5 VCC = 12V -15 V SENSE = 100mV A = 20 -25 V RL = 1M -35 10 100 VRS+ = 12V -100 -120 1k 10k FREQUENCY (Hz) 100k FIGURE 49. GAIN vs FREQUENCY VRS+ = 100mV/12V, VSENSE = 100mV, VOUT = 50mVP-P FN6548 Rev 6.00 November 22, 2013 -80 1M -140 -50 -25 0 25 50 75 TEMPERATURE (C) 100 125 FIGURE 50. VOS (V) vs TEMPERATURE Page 14 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) 40 220 1000pF 180 30 4.7nF 100 NO CL 10 10nF 0 -10 -20 VCC = 5V VRS- = 3V -30 AV = 20 VOUT = 400mVP-P -40 1.E+03 1.E+04 1.E+05 10nF 20 -20 -60 -100 VCC = 5V V = 3V -140 RSAV = 20 -180 V OUT = 400mVP-P -220 1.E+03 1.E+04 1.E+06 FREQUENCY (Hz) 0.31 0.3150 0.310 0.305 0.27 0.25 0.23 0.21 0.300 0.19 0.295 0.17 0.290 -50 -25 0 25 50 75 100 GAIN 20 VRS+ = 12V 0.29 VOUT ERROR (%) GAIN ACCURACY (%) 0.320 0.15 -50 125 -25 0 TEMPERATURE (C) UNITS VOS (V) 80 120 160 200 FIGURE 55. VOS (V) DISTRIBUTION AT +25C, VRS+ = 12V, QUANTITY: 100 FN6548 Rev 6.00 November 22, 2013 25 50 75 TEMPERATURE (C) 100 125 FIGURE 54. VOUT ERROR (%) vs TEMPERATURE FIGURE 53. GAIN ACCURACY (%) vs TEMPERATURE 26 GAIN 101 ADJ 24 Rf = 100k, Rg = 1k 22 VSENSE = 20mV, 100mV 20 18 16 14 12 10 8 6 4 2 0 -200 -160 -120 -80 -40 0 40 VOS (V) 1.E+06 FIGURE 52. CAPACITIVE LOAD DRIVE PHASE VS FREQUENCY GAIN 20 VSENSE = 20mV, 100mV VRS+ = 12V 0.325 1.E+05 FREQUENCY (Hz) FIGURE 51. CAPACITIVE LOAD DRIVE GAIN VS FREQUENCY 0.330 NO CL 4.7nF 60 PHASE () GAIN (dB) 20 100pF 1000pF 140 100pF 2800 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 -200 -400 GAIN 101 ADJ Rf = 100k, Rg = 1k VSENSE = 20mV, 100mV +125C +100C -40C 0 2 4 6 8 +25C 10 12 14 16 18 20 22 24 26 28 VRS+ (V) FIGURE 56. VOS vs VRS+ Page 15 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) 250 GAIN 101 ADJ Rf = 100k, Rg = 1k VSENSE = 20mV, 100mV 150 +125C 100 +25C -40C GAIN 101 ADJ Rf = 100k, Rg = 1k VSENSE = 2mV, 20mV 200 VOS (V) VOS (V) 2800 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 -200 -400 +100C 50 +25C 0 -50 -100 +100C -40C -150 -200 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 +125C -250 2 2.0 4 6 8 VRS+ (V) FIGURE 57. VOS vs VRS+ +100C 2000 +25C FIGURE 58. VOS vs VCC, HIGH-SIDE 1000 VOS (V) 0.6 GAIN 101 ADJ Rf = 100k, Rg = 1k VSENSE = 2mV, 20mV -40C +125C 0 0.4 -1000 +125C +100C 0.2 ACCURACY (%) 3000 10 12 14 16 18 20 22 24 26 28 VCC (V) GAIN 101 ADJ Rf = 100k, Rg = 1k VSENSE = 20mV, 100mV 0 -0.2 +25C -0.4 -40C -0.6 -0.8 -1.0 -2000 -1.2 -3000 2 4 6 8 -1.4 10 12 14 16 18 20 22 24 26 28 VCC (V) FIGURE 59. VOS vs VCC, LOW-SIDE 0.6 0 +100C +125C ACCURACY (%) ACCURACY (%) 0.2 -0.2 -0.4 -0.6 +25C -40C -0.8 -1.0 -1.2 -1.4 0 0.2 0.4 0.6 0.8 1.0 1.2 VRS+ (V) 1.4 1.6 1.8 FIGURE 61. GAIN ACCURACY vs VRS+ = 0V TO 2V FN6548 Rev 6.00 November 22, 2013 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VRS+ (V) FIGURE 60. GAIN ACCURACY vs VRS+ = 0V TO 28V GAIN 101 ADJ Rf = 100k, Rg = 1k VSENSE = 20mV, 100mV 0.4 0 2.0 3.0 2.5 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5.0 -40C +100C +25C GAIN 101 ADJ Rf = 100k, Rg = 1k VSENSE = 2mV, 20mV +125C 2 4 6 8 10 12 14 16 18 20 22 24 26 28 VCC (V) FIGURE 62. GAIN ACCURACY vs VCC, VRS+ = 12V Page 16 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) 0.2 0.0 2 ACCURACY (%) -2 +100C +25C -40C -4 -6 -8 +125C -10 -12 -14 GAIN 101 ADJ Rf = 100k, Rg = 1k VSENSE = 2mV, 20mV -16 -18 -20 2 4 6 8 VOA PERCENT ACCURACY (%) 0 10 12 14 16 18 20 22 24 26 28 +25C -0.2 -40C -0.4 -0.6 GAIN 101 ADJ R = 100k -0.8 Rf = 1k g -1.0 0.2 0.0 -0.2 -0.4 -0.6 GAIN 21 ADJ -0.8 Rf = 100k R = 5k -1.0 g 1 10 +100C +125C +25C -40C +100C +125C 100 IOUT(A) VCC (V) FIGURE 63. GAIN ACCURACY vs VCC, VRS+ = 0.1V 45 GAIN (dB) 30 VRS+ = 0.1V GAIN = 21 VRS+ = 12V GAIN = 21 0 -50 GAIN = 21 -100 -150 GAIN = 101 -200 -250 -300 -350 -50 1M FIGURE 65. GAIN vs FREQUENCY VRS+ = 100mV/12V, VSENSE = 100mV, VOUT = 50mVP-P -25 0 25 50 75 TEMPERATURE (C) 100 125 FIGURE 66. VOS (V) vs TEMPERATURE 0.6 0.40 0.35 0.5 GAIN = 101 0.30 VOUT ERROR (%) GAIN ACCURACY (%) GAIN = 21, 101 Rf = 100k Rg = 1k, 5k RL = 1M 50 10 GAIN = 21, 51, 101 Rf = 100k 5 Rg = 1k, 2k, 5k VRS+ = 12V GAIN = 51 RL = 1M 0 100 1k 10k 100k FREQUENCY (Hz) 0.25 0.20 0.15 VRS+ = 12V 100 VRS+ = 12V GAIN = 51 VCC = 12V 15 VSENSE = 100mV VSENSE = 20mV, 100mV 150 VRS+ = 0.1V GAIN = 101 25 20 200 VOS (V) 35 10m FIGURE 64. NORMALIZED VOA vs IOUT VRS+ = 12V GAIN = 101 40 1m VSENSE = 20mV, 100mV VRS+ = 12V 0.10 GAIN = 21, 101 Rf = 100k 0.05 Rg = 1k, 5k RL = 1M 0 -50 -25 0 GAIN = 21 25 50 75 100 TEMPERATURE (C) FIGURE 67. GAIN ACCURACY (%) vs TEMPERATURE FN6548 Rev 6.00 November 22, 2013 125 0.4 GAIN = 101 0.3 0.2 0.1 VSENSE = 20mV, 100mV VRS+ = 12V 0 GAIN = 21, 101 Rf = 100k -0.1 Rg = 1k, 5k RL = 1M -0.2 -50 -25 0 GAIN = 21 25 50 75 100 125 TEMPERATURE (C) FIGURE 68. VOUT ERROR (%) vs TEMPERATURE Page 17 of 26 ISL28006 Typical Performance Curves VCC = 12V, RL = 1M, unless otherwise specified. (Continued) 20 10 15 IRS+ INPUT BIAS CURRENT (A) INPUT BIAS CURRENT (A) 15 5 0 VCC = 12V VRS- = 0V AV = 20 RL = 1M -5 -10 -15 0 IRS+ 50 100 150 200 VCC = 12V VRS- = 12V AV = 20 RL = 1M 5 0 IRS+ -5 -10 250 IRS+ 10 0 50 100 150 200 250 DIFFERENTIAL VOLTAGE RS+ TO RS- (mV) DIFFERENTIAL VOLTAGE RS+ TO RS- (mV) FIGURE 69. LOW SIDE CURRENT SENSING INPUT BIAS CURRENTS FIGURE 70. HIGH SIDE CURRENT SENSING INPUT BIAS CURRENTS Test Circuits and Waveforms VCC VR1 ICC + + VRS+ VSENSE RS+ + VSENSE VRS+ GND - 1M RS+ + OUT RS- VCC R1 RL - - VOUT R2 OUT RSGND 1M RL VOUT VR2 FIGURE 71. ICC, VOS, VOA, CMRR, PSRR, GAIN ACCURACY FIGURE 72. INPUT BIAS CURRENT, LEAKAGE CURRENT VCC RS+ SIGNAL GENERATOR OUT RS+ RS- VRS+ VRS- GND 1M VCC VSENSE VRS+ RL VOUT OUT RSGND 1M RL VOUT PULSE GENERATOR FIGURE 73. ts, SATURATION RECOVERY TIME FIGURE 74. GAIN vs FREQUENCY VCC RS+ OUT RS- VRS+ GND 1M RL VOUT PULSE GENERATOR FIGURE 75. SLEW RATE FN6548 Rev 6.00 November 22, 2013 Page 18 of 26 ISL28006 Applications Information gain resistors to set the gain of the output. For the fixed gain amps the only external component needed is a current sense resistor (typically 0.001 to 0.01, 1W to 2W). Functional Description The ISL28006-20, ISL28006-50 and ISL28006-100 are single supply, uni-directional current sense amplifiers with fixed gains of 20V/V, 50V/V and 100V/V respectively. The ISL28006-ADJ is single supply, uni-directional current sense amplifier with an adjustable gain via external resistors (see Figure 80). The ISL28006-ADJ is stable for gains of 20 and higher. The transfer function for the fixed gain parts is given in Equation 1. The ISL28006 is a 2-stage amplifier. Figure 76 shows the active circuitry for high-side current sense applications where the sense voltage is between 1.35V to 28V. Figure 77 shows the active circuitry for ground sense applications where the sense voltage is between 0V to 1.35V. RF V OUT = 1 + ------- I S R S + V OS R G The first stage is a bi-level trans-conductance amp and level translator. The gm stage converts the low voltage drop (VSENSE) sensed across an external milli-ohm sense resistor, to a current (@ gm = 21.3A/V). The trans-conductance amplifier forces a current through R1 resulting to a voltage drop across R1 that is equal to the sense voltage (VSENSE). The current through R1 is mirrored across R5 creating a ground-referenced voltage at the input of the second amplifier equal to VSENSE. The second stage is responsible for the overall gain and frequency response performance of the device. The fixed gains (20, 50, 100) are set with internal resistors Rf and Rg. The variable gain (ADJ) has an additional FB pin and uses external V OUT = GAIN I S R S + V OS (EQ. 1) The transfer function for the adjustable gain part is given in Equation 2. (EQ. 2) Where ISRS is the product of the load current and the sense resistor and is equal to VSENSE. When the sensed input voltage is >1.35V, the gmHI amplifier path is selected and the input gm stage derives its ~2.86A supply current from the input source through the RS+ terminal. When the sense voltage at RS+ drops below the 1.35V threshold, the gmLO amplifier is enabled for Low Side current sensing. The gmLO input bias current reverses, flowing out of the RS- pin. Since the gmLO amplifier is sensing voltage around ground, it cannot source current to R5. A current mirror referenced off Vcc supplies the current to the second stage for generating a ground referenced output voltage. See Figures 69 and 70 for typical input bias currents for High and Low side current sensing. VCC OPTIONAL FILTER CAPACITOR I = 2.86A VSENSE IS RS+ + RS R1 VSENSE gmHI HIGH-SIDE SENSING VRS+ = 2V TO 28V - VCC = 2V to 28V RSR2 + OPTIONAL TRANSIENT PROTECTION OUT - 1.35V Rf IMIRROR R3 gmLO `VSENSE Rg R5 LOAD R4 GND FIGURE 76. HIGH-SIDE CURRENT DETECTION FN6548 Rev 6.00 November 22, 2013 Page 19 of 26 ISL28006 VCC = 2V TO 28V VCC OPTIONAL FILTER CAPACITOR I = 2.86A VSENSE IS RS+ + - RS R1 VSENSE LOW-SIDE SENSING VRS+= 0V TO 28V gmHI RSR2 LOAD + OPTIONAL TRANSIENT PROTECTION 1.35V R3 VCC IMIRROR gmLO R5 OUT Rf Rg VSENSE R4 GND FIGURE 77. LOW-SIDE CURRENT DETECTION FN6548 Rev 6.00 November 22, 2013 Page 20 of 26 ISL28006 Hysteretic Comparator The input trans-conductance amps are under control of a hysteretic comparator operating from the incoming source voltage on the RS+ pin (Figure 78). The comparator monitors the voltage on RS+ and switches the sense amplifier from the low-side gm amp to the high-side gm amplifier whenever the input voltage at RS+ increases above the 1.35V threshold. Conversely, a decreasing voltage on the RS+ pin, causes the hysteric comparator to switch from the high-side gm amp to the low-side gm amp as the voltage decreases below 1.35V. It is that low-side sense gm amplifier that gives the ISL28006 the proprietary ability to sense current all the way to 0V. Negative voltages on the RS+ or RS- are beyond the sensing voltage range of this amplifier. 0.5 0.4 ACCURACY (%) 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 R P I RS- = 100 130nA = 13V (EQ. 3) Switching applications can generate voltage spikes that can overdrive the amplifier input and drive the output of the amplifier into the rails, resulting in a long overload recover time. Capacitors CM and CD filter the common mode and differential voltage spikes. Error Sources There are 3 dominant error sources: gain error, input offset voltage error and Kelvin voltage error (see Figure 79). The gain error is dominated by the internal resistance matching tolerances. The remaining errors appear as sense voltage errors at the input to the amplifier. They are VOS of the amplifier and Kelvin voltage errors. If the transient protection resistor is added, an additional VOS error can result from the IxR voltage due to input bias current. The limiting resistor should only be added to the RS- input, due to the high-side gm amplifier (gmHI) sinking several micro amps of current through the RS+ pin. Layout Guidelines -0.4 -0.5 value of 100 will provide protection for a 2V transient with the maximum of 20mA flowing through the input while adding only an additional 13V (worse case over-temperature) of VOS. Refer to Equation 3: 0 0.2 0.4 0.6 0.8 1.0 1.2 VRS+ (V) 1.4 1.6 1.8 2.0 The Kelvin Connected Sense Resistor FIGURE 78. GAIN ACCURACY vs VRS+ = 0V TO 2V Typical Application Circuit Figure 80 shows the basic application circuit and optional protection components for switched-load applications. For applications where the load and the power source is permanently connected, only an external sense resistor is needed. For applications where fast transients are caused by hot plugging the source or load, external protection components may be needed. The external current limiting resistor (RP) in Figure 80 may be required to limit the peak current through the internal ESD diodes to <20mA. This condition can occur in applications that experience high levels of in-rush current causing high peak voltages that can damage the internal ESD diodes. An RP resistor The source of Kelvin voltage errors is illustrated in Figure 79. The resistance of 1/2 Oz copper is ~1m per square with a TC of ~3900ppm/C (0.39%/C). When you compare this unwanted parasitic resistance with the total 1m to 10m resistance of the sense resistor, it is easy to see why the sense connection must be chosen very carefully. For example, consider a maximum current of 20A through a 0.005sense resistor, generating a VSENSE = 0.1 and a full scale output voltage of 10V (G = 100). Two side contacts of only 0.25 square per contact puts the VSENSE input about 0.5 x 1m away from the resistor end capacitor. If only 10A the 20A total current flows through the kelvin path to the resistor, you get an error voltage of 10mV (10A x 0.5sq x 0.001/sq. = 10mV) added to the 100mV sense voltage for a sense voltage error of 10% (0.110V-0.1)/0.1V) x 100. CURRENT RESISTOR Current SENSE Sense Resistor CURRENT Current InIN 1m 10m 1 toTO 10mO Non-uniform NON-UNIFORM CURRENT FLOW Current Flow Copper Trace TRACE 1/2 Oz COPPER 1m /SQ 30mO/Sq. CURRENT OUT Current Out PC PC BOARD Board KELVIN CONTACTS Kelvin VVSContacts S FIGURE 79. PC BOARD CURRENT SENSE KELVIN CONNECTION FN6548 Rev 6.00 November 22, 2013 Page 21 of 26 ISL28006 2.7VDC TO 28VDC VCC I = 2.86A RS+ (1m RS TO 0.1) FIXED GAIN OPTION ONLY gmHI CD RS- CM + RP + - 0.1VDC TO 28VDC OUT - 1.35V ADJ OPTION ONLY FB gmLO LOAD GND FIGURE 80. TYPICAL APPLICATION CIRCUIT Overall Accuracy (VOA %) where: VOA is defined as the total output accuracy Referred-to-Output (RTO). The output accuracy contains all offset and gain errors, at a single output voltage. Equation 4 is used to calculate the % total output accuracy. * PDMAXTOTAL is the sum of the maximum power dissipation of each amplifier in the package (PDMAX) V OUT actual - V OUT exp ected V OA = 100 ------------------------------------------------------------------------------ V OUT exp ected (EQ. 4) * PDMAX for each amplifier can be calculated using Equation 7: V OUTMAX PD MAX = V S I qMAX + V S - V OUTMAX -----------------------R (EQ. 7) L where: where VOUT Actual = VSENSE x GAIN Example: Gain = 100, For 100mV VSENSE input we measure 10.1V. The overall accuracy (VOA) is 1% as shown in Equation 5. 10.1 - 10 V OA = 100 ------------------------- = 1% 10 (EQ. 5) * TMAX = Maximum ambient temperature * JA = Thermal resistance of the package * PDMAX = Maximum power dissipation of 1 amplifier * VCC = Total supply voltage * IqMAX = Maximum quiescent supply current of 1 amplifier Power Dissipation * VOUTMAX = Maximum output voltage swing of the application It is possible to exceed the +150C maximum junction temperatures under certain load and power supply conditions. It is therefore important to calculate the maximum junction temperature (TJMAX) for all applications to determine if power supply voltages, load conditions, or package type need to be modified to remain in the safe operating area. These parameters are related using Equation 6: * RL = Load resistance T JMAX = T MAX + JA xPD MAXTOTAL FN6548 Rev 6.00 November 22, 2013 (EQ. 6) Page 22 of 26 ISL28006 Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you have the latest Rev. DATE REVISION November 22, 2013 FN6548.6 CHANGE Added eight new Typical Performance Curves 1. Av=100 Capacitive Load Drive Gain vs Freq 2. Av=100 Capacitive Load Drive Phase vs Freq 3. Av=50 Capacitive Load Drive Gain vs Freq 4. Av=50 Capacitive Load Drive Phase vs Freq 5. Av=20 Capacitive Load Drive Gain vs Freq 6. Av=20 Capacitive Load Drive Phase vs Freq 7. High Side Operation Input Bias Currents 8. Low Side Operation Input Bias Currents Under Electrical Specifications Table: Changed parameter from Is to Icc to clarify supply current Ordering information table on page 3: Changed Note 4 location in the table. April 12, 2011 FN6548.5 Converted to new template Page 1 - Changed headings for "Typical Application" and "Gain Accuracy vs VRS+ = 0V to 28V" to Figure titles (Figures 1 and 2). Page 1 - Updated Intersil Trademark statement at bottom of page 1 per directive from Legal. Page 7 - Updated over temp note in Min Max column of spec tables from "Parameters with MIN and/or MAX limits are 100% tested at +25C, unless otherwise specified. Temperature limits established by characterization and are not production tested." to new standard "Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design." Page 19 - Figure 69, Low side current detection schematic: Moved the LOAD from the ground side of the power side circuit to the high side. September 2, 2010 FN6548.4 Added -T7A tape and reel options to Ordering Information Table for all packages. May 12, 2010 FN6548.3 Added Note 4 to Part Marking Column in "Ordering Information" on page 3. Corrected hyperlinks in Notes 1 and 3 in "Ordering Information" on page 3. April 8, 2010 Removed "Coming Soon" from evaluation boards in "Ordering Information" on page 3. April 7, 2010 Added "Related Literature" on page 1 Updated Package Drawing Number in the "Ordering Information" on page 3 for the 20V, 50V and 100V options from MDP0038 to P50.64A. Revised package outline drawing from MDP0038 to P5.064A on page 24. MDP0038 package contained 2 packages for both the 5 and 6 Ld SOT-23. MDP0038 was obsoleted and the packages were separated and made into 2 separate package outline drawings; P5.064A and P6.064A. Changes to the 5 Ld SOT-23 were to move dimensions from table onto drawing, add land pattern and add JEDEC reference number. March 10, 2010 FN6548.2 Releasing adjustable gain option. Added adjustable block diagram (Page 2), Added adjustable gain limits to electrical spec table, added Figures 47 through 60, Added +85C curves to Figures 6 thru 14, 20 thru 28, 34 thru 42, and Figures 48 thru 56. Modified Figure 70. February 4, 2010 FN6548.1 -Page 1: Edited last sentence of paragraph 2. Moved order of GAIN listings from 20, 50, 100 to 100, 50, 20 in the 3rd paragraph. Under Features ....removed "Low Input Offset Voltage 250V, max" Under Features .... moved order of parts listing from 20, 50, 100 (from top to bottom) to 100, 50, 20. -Page 3: Removed coming soon on ISL28006FH50Z and ISL28006FH20Z and changes the order or listing them to 100, 50, 20. -Page 5: VOA test. Under conditions column ...deleted 20mV to. It now reads ... Vsense = 100mV SR test. Under conditions column ..deleted what was there. It now reads ... Pulse on RS+pin, See Figure 51 -Page 6: ts test. Removed Gain = 100 and Gain = 100V/V in both description and conditions columns respectively. -Page 9: Added VRS+= 12V to Figures 16, 17, 18. -Page 11: Added VRS+= 12V to Figures 30, 31, 32. -Page 13 & 14: Added VRS+= 12V to Figures 44, 45, 46. -Page 14 Added Figure 51 and adjusted figure numbers to account for the added figure. -Figs 8, 26, and 40 change "HIGH SIDE" to "VRS = 12V", where RS is subscript. -Figs 9, 27, and 41 change "LOW SIDE" to "VRS = 0.1V", where RS is subscript. December 14, 2009 FN6548.0 Initial Release FN6548 Rev 6.00 November 22, 2013 Page 23 of 26 ISL28006 About Intersil Intersil Corporation is a leader in the design and manufacture of high-performance analog, mixed-signal and power management semiconductors. The company's products address some of the largest markets within the industrial and infrastructure, personal computing and high-end consumer markets. For more information about Intersil, visit our website at www.intersil.com. For the most updated datasheet, application notes, related documentation and related parts, please see the respective product information page found at www.intersil.com. You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/en/support/ask-an-expert.html. Reliability reports are also available from our website at http://www.intersil.com/en/support/qualandreliability.html#reliability (c) Copyright Intersil Americas LLC 2009-2013. All Rights Reserved. All trademarks and registered trademarks are the property of their respective owners. For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com FN6548 Rev 6.00 November 22, 2013 Page 24 of 26 ISL28006 Package Outline Drawing P5.064A 5 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE Rev 0, 2/10 1.90 0-3 D A 0.08-0.20 5 4 PIN 1 INDEX AREA 2.80 3 1.60 3 0.15 C D 2x 2 5 (0.60) 0.20 C 2x 0.95 SEE DETAIL X B 0.40 0.05 3 END VIEW 0.20 M C A-B D TOP VIEW 10 TYP (2 PLCS) 2.90 5 H 0.15 C A-B 2x C 1.45 MAX 1.14 0.15 0.10 C SIDE VIEW SEATING PLANE (0.25) GAUGE PLANE 0.450.1 0.05-0.15 4 DETAIL "X" (0.60) (1.20) NOTES: (2.40) 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to ASME Y14.5M-1994. 3. Dimension is exclusive of mold flash, protrusions or gate burrs. 4. Foot length is measured at reference to guage plane. 5. This dimension is measured at Datum "H". 6. Package conforms to JEDEC MO-178AA. (0.95) (1.90) TYPICAL RECOMMENDED LAND PATTERN FN6548 Rev 6.00 November 22, 2013 Page 25 of 26 ISL28006 Package Outline Drawing P6.064 6 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE Rev 4, 2/10 0-8 1.90 0.95 0.08-0.22 D A 6 5 4 2.80 PIN 1 INDEX AREA 1.60 +0.15/-0.10 3 3 (0.60) 1 2 3 0.20 C 2x 0.40 0.10 B SEE DETAIL X 3 0.20 M C A-B D END VIEW TOP VIEW 10 TYP (2 PLCS) 2.90 0.10 3 1.15 +0.15/-0.25 C 0.10 C SEATING PLANE 0.00-0.15 SIDE VIEW (0.25) GAUGE PLANE 1.45 MAX DETAIL "X" 0.450.1 4 (0.95) (0.60) (1.20) (2.40) NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to ASME Y14.5M-1994. 3. Dimension is exclusive of mold flash, protrusions or gate burrs. 4. Foot length is measured at reference to guage plane. 5. Package conforms to JEDEC MO-178AB. TYPICAL RECOMMENDED LAND PATTERN FN6548 Rev 6.00 November 22, 2013 Page 26 of 26 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Intersil: ISL28006FH-100EVAL1Z ISL28006FH-20EVAL1Z ISL28006FH-ADJEVAL1Z