LM2902 Low-power quad operational amplifier Features Wide gain bandwidth: 1.3 MHz Input common-mode voltage range includes negative rail Large voltage gain: 100 dB Very low supply current per amplifier: 375 A Low input bias current: 20 nA Low input offset current: 2 nA Wide power supply range: - Single supply: +3 V to +30 V - Dual supplies: 1.5 V to 15 V N DIP14 (Plastic package) D SO-14 (Plastic micropackage) Description This circuit consists of four independent, high gain, internally frequency compensated operational amplifiers designed especially for automotive and industrial control systems. The device operates from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. P TSSOP14 (Thin shrink small outline package) Q4 QFN16 3x3 (Plastic micropackage) February 2012 Doc ID 2469 Rev 6 1/20 www.st.com 20 Schematic diagram Schematic diagram Figure 1. Schematic diagram (1/4 LM2902) Figure 2. Pin connections (top view) /UTPUT /UTPUT )NVERTING INPUT )NVERTING I NPUT .ON INVERTING INPUT .ON INVERTING I NPUT 6## .ON INVERTING I NPUT .ON INVERTING I NPUT )NVERTING I NPUT )NVERTING I NPUT /UTPUT /UTPUT 6## IN1- OUT1 OUT4 IN4- 16 15 14 13 2/20 VCC- NC 3 10 NC IN2+ IN2 4 9 IN3+ IN3 8 11 IN3- 2 7 VCC+ OUT3 IN4+ 6 12 OUT2 1 5 IN1+ IN2- 1 LM2902 Doc ID 2469 Rev 6 LM2902 Absolute maximum ratings 2 Absolute maximum ratings Table 1. Absolute maximum ratings (AMR) Symbol VCC Parameter Value Unit 16 to 33 V +32 V -0.3 to +32 V Output short-circuit duration (3) Infinite s Maximum junction temperature 150 C (4): 5 mA in DC or 50 mA in AC (duty cycle = 10%, T=1s) Supply voltage (1) Vid Differential input voltage Vin Input voltage Tj Input current Iin Tstg (2) Vin driven negative Input current (5): Vin driven positive above AMR value Storage temperature range mA 0.4 -65 to +150 C ambient(6) Rthja Thermal resistance junction to SO-14 TSSOP14 DIP14 QFN16 3x3 Rthjc Thermal resistance junction to case(6) SO-14 TSSOP14 DIP14 QFN16 3x3 31 32 33 14 HBM: human body model(7) 370 V MM: machine model(8) 150 V 1500 V ESD CDM: charged device 105 100 80 45 model(9) C/W C/W 1. All voltage values, except differential voltage are with respect to network ground terminal. 2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. 3. Short-circuit from the output to VCC+ can cause excessive heating and eventual destruction. The maximum output current is approximately 20 mA, independent of the magnitude of VCC+. 4. This input current only exists when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistor becoming forward-biased and thereby acting as input diode clamp. In addition to this diode action, there is NPN parasitic action on the IC chip. This transistor action can cause the output voltages of the Opamps to go to the VCC voltage level (or to ground for a large overdrive) for the time during which an input is driven negative. This is not destructive and normal output is restored for input voltages above -0.3 V. 5. The junction base/substrate of the input PNP transistor polarized in reverse must be protected by a resistor in series with the inputs to limit the input current to 400 A max (R = (Vin - 36 V)/400 A). 6. Rthja/c are typical values. 7. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 k resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. 8. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ). This is done for all couples of connected pin combinations while the other pins are floating. 9. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins. Doc ID 2469 Rev 6 3/20 Operating conditions LM2902 3 Operating conditions Table 2. Operating conditions Symbol VCC 4/20 Parameter Supply voltage Vicm Common mode input voltage range Tmin Tamb Tmax Toper Operating free-air temperature range Doc ID 2469 Rev 6 Value Unit 3 to 30 V VCC+ - 1.5 VCC+ -2 V -40 to +125 C LM2902 Electrical characteristics 4 Electrical characteristics Table 3. VCC+ = 5V, VCC- = Ground, Vo = 1.4V, Tamb = 25C (unless otherwise specified) Symbol Vio DVio Iio DIio Parameter Min. Typ. Max. Unit Input offset voltage (1) Tmin Tamb Tmax 2 7 9 mV Input offset voltage drift 7 30 V/C Input offset current Tmin Tamb Tmax 2 30 40 nA Input offset current drift 10 200 pA/C 20 150 300 nA (2) Iib Input bias current Tmin Tamb Tmax Avd Large signal voltage gain VCC+ = +15 V, RL = 2 k, Vo = 1.4 V to 11.4 V Tmin Tamb Tmax 50 25 100 SVR Supply voltage rejection ratio (RS 10 k) Tmin Tamb Tmax 65 65 110 Icc CMR IO Supply current, all amps, no load VCC+ = +5 V VCC+ = +30 V Tmin Tamb Tmax VCC+ = +5 V VCC+ = +30 V dB 0.7 1.5 1.2 3 0.8 1.5 1.2 3 Common-mode rejection ratio (RS 10 k) Tmin Tamb Tmax 70 60 80 Output short-circuit current (Vid = +1 V) VCC+ = +15 V, Vo = +2 V 20 40 Isink Output sink current (Vid = -1 V) VCC+ = +15 V, Vo = +2 V VCC+ = +15 V, Vo = +0.2 V 10 12 20 50 26 26 27 27 3 3.5 27 VOH High level output voltage VCC+ = +30 V RL = 2 k Tmin Tamb Tmax RL = 10 k Tmin Tamb Tmax VCC+ = +5 V, RL = 2 k Tmin Tamb Tmax VOL Low level output voltage (RL = 10 k) Tmin Tamb Tmax SR Slew rate VCC+ = 15 V, Vin = 0.5 to 3 V, RL = 2 k, CL = 100 pF, unity gain Doc ID 2469 Rev 6 V/mV dB 70 0.4 mA mA A V 28 5 mA 20 20 mV V/s 5/20 Electrical characteristics Table 3. VCC+ = 5V, VCC- = Ground, Vo = 1.4V, Tamb = 25C (unless otherwise specified) Symbol Parameter Min. GBP Gain bandwidth product VCC+ = 30 V, Vin = 10 mV, RL = 2 k, CL = 100 pF THD Total harmonic distortion f = 1 kHz, AV = 20 dB, RL = 2 k, Vo = 2 Vpp, CL = 100 pF, VCC+ = 30 V en VO1/VO2 1. LM2902 Typ. Max. Unit 1.3 MHz 0.015 % Equivalent input noise voltage f = 1 kHz, RS = 100 , VCC+ = 30 V 40 nV -----------Hz Channel separation (3) 1 kHz f 20 kHz 120 dB VO = 1.4 V, RS = 0 , 5 V < VCC+ < 30 V, 0 V < Vic < VCC+ - 1.5 V. 2. The direction of the input current is out of the IC. This current is essentially constant, independent of the state of the output, so there is no change in the loading charge on the input lines. 3. Due to the proximity of external components ensure stray capacitance does not cause coupling between these external parts. This typically can be detected as this type of capacitance increases at higher frequencies. 6/20 Doc ID 2469 Rev 6 LM2902 Electrical characteristics Figure 3. Input bias current vs. Tamb Figure 4. 24 21 18 15 12 9 6 3 0 15 INPUT VOLTAGE (V) IB (nA) Input voltage range 10 0 AMBIENT TEMPERATURE (C) Current limiting Figure 6. 15 Supply current VCC IO SUPPLY CURRENT (mA) OUTPUT CURRENT (mA) 10 4 - 80 70 60 + 50 40 30 20 10 ID mA 3 - 2 + Tamb = 0C to +125C 1 Tamb = -55C 0 -55 -35 -15 5 25 45 65 85 105 125 0 TEMPERATURE (C) 10 20 30 POSITIVE SUPPLY VOLTAGE (V) Gain bandwidth product Figure 8. GBP (mhz) Voltage follower pulse response 4 OUTPUT VOLTAGE (V) 1.35 1.30 1.25 1.2 1.15 1.1 1.05 1 -95 -9 RL 2 k VCC = +15V 3 2 1 0 3 -55-35-15 5 25 45 65 85 105 125 AMBIENT TEMPERATURE (C) INPUT VOLTAGE (V) GAIN BANDWIDTH PRODUCT (MHz) 5 POWER SUPPLY VOLTAGE (V) 90 Figure 7. Positive 5 -55-35-15 5 25 45 65 85 105 125 Figure 5. Negative Doc ID 2469 Rev 6 2 1 0 10 20 30 40 TIME ( s) 7/20 Electrical characteristics Common mode rejection ratio Figure 10. Output characteristics (sink) 10 120 OUTPUT VOLTAGE (V) COMMON MODE REJECTION RATIO (dB) Figure 9. LM2902 100 80 +7.5V 100k 100 60 - 40 100 eI eO + 100k 20 VCC = +5V VCC = +15V VCC = +30V 1 IO 10K 1K Tamb = +25C 0,001 1M 100K Figure 11. Open-loop frequency response ( VOLTAGE GAIN (dB) OUTPUT VOLTAGE (mV) VCC VI VCC/2 VO + 80 VCC = 30V & -55C Tamb 60 +125C 40 VCC = +10 to + 15V & -55C Tamb +125C 0 10 100 1k 10k 100k 1M eO el - 50pF 400 Input 350 Output 300 10M Tamb = +25C VCC = 30 V 0 1 2 +15V VO VI + 2k 10 5 0 1k 10k 100k 1M 8 5 6 7 8 V CC 7 6 TO VCC+ (V) 100k +7V 4 Figure 14. Output characteristics (source) OUTPUT VOLTAGE REFERENCED 20 - 3 TIME (s) Figure 13. Large signal frequency response 15 100 + 450 FREQUENCY (Hz) 1k 10 ) 250 1.0 OUTPUT SWING (Vpp) 1 500 10M - 100 0,1 Figure 12. Voltage follower pulse response 140 0.1F 0,01 OUTPUT SINK CURRENT (mA) FREQUENCY (Hz) 120 VO + 0.01 100 V CC /2 5 + VO IO - 4 3 2 Independent of V CC T amb = +25C 1 0,001 0,01 0,1 1 10 100 OUTPUT SOURCE CURRENT (mA) FREQUENCY (Hz) 8/20 - 0.1 +7.5V 0 20 v cc v cc /2 Doc ID 2469 Rev 6 LM2902 Electrical characteristics Figure 15. Input current Figure 16. Voltage gain 160 R L = 20k 50 25 Tamb= +25C 0 10 20 30 POSITIVE SUPPLY VOLTAGE (V) POWER SUPPLY & COMMON MODE REJECTION RATIO (dB) POWER SUPPLY & COMMON MODE REJECTION RATIO (dB) 120 115 110 105 100 95 90 85 80 75 SVR CMR 70 -55-35-15 5 25 45 65 85 105 125 R L = 2k 80 40 0 10 20 30 POSITIVE SUPPLY VOLTAGE (V) Figure 18. Large signal voltage gain LARGE SIGNAL VOLTAGE GAIN Figure 17. Power supply and common mode rejection ratio 120 AMBIENT TEMPERATURE (C) Doc ID 2469 Rev 6 120 115 110 105 -55 75 VOLTAGE GAIN (dB) INPUT CURRENT (nA) 100 100 -55-35-15 5 25 45 65 85 105 125 AMBIENT TEMPERATURE (C) 9/20 Typical single-supply applications 5 LM2902 Typical single-supply applications Figure 19. AC coupled inverting amplifier Rf 100 k CI AV = - R1 100 k Rf R1 (as shown A V = -10) R1 10 k R2 VCC 100 k 2VPP 0 eo RB 6.2 k R3 100 k A V = 1 + R2 R1 (as shown AV = 11) Co 1/4 LM2902 CI RL 10 k R3 1 M eI ~ RL 10 k R4 100 k VCC C2 10 F Figure 21. Non-inverting DC gain eO 1/4 LM2902 e1 100 k +5 V 100 k e2 100 k e3 100 k eO (V) R2 1 M R5 100 k Figure 22. DC summing amplifier A V = 1 + R2 R1 (As shown A V = 101) 10 k 0 eO 100 k eo = e1 + e2 - e3 - e4 where (e1 + e2) (e3 + e4) to keep eo 0 V e I (mV) Figure 23. Active bandpass filter Figure 24. High input Z adjustable gain DC instrumentation amplifier R1 100 k R1 100 k C1 330 pF 1/4 LM2902 R5 470 k R4 10 M 1/4 LM2902 e1 1/4 LM2902 R2 2 k C2 330 pF R3 10 k R6 470 k R7 100 k Fo = 1 kHz Q = 50 Av = 100 (40 dB) C3 10 F e2 If R1 = R5 and R3 = R4 = R6 = R7 eo = [ 1 + 2R1 ] (e2 - e1) R2 As shown eo = 101 (e2 - e1) Doc ID 2469 Rev 6 R4 100 k 1/4 LM2902 R5 100 k 1/4 LM2902 VCC R8 100 k R3 100 k Gain adjust eO 1/4 LM2902 10/20 1/4 LM2902 100 k e4 e1 2 VPP 0 eo RB 6.2 k C1 10 F R1 10 k R2 1 M C1 0.1 F Co 1/4 LM2902 eI ~ Figure 20. AC coupled non-inverting amplifier R6 100 k R7 100 k eO LM2902 Typical single-supply applications Figure 25. High input Z, DC differential amplifier Figure 26. Low drift peak detector IB R4 100 k R2 100 k 1/4 R1 100 k 1/4 LM2902 eI R3 100 k +V1 +V2 C * 1 F ZI 1/4 LM2902 2I B R 1 M As shown eo = (e2 - e1) Zo 2I B 2N 929 Vo eo = [ 1 + R4 ] (e2 - e1) R3 eo I B LM2902 1/4 LM2902 0.001 F IB 3R 3 M IB 1/4 LM2902 Input current compensation * Polycarbonate or polyethylene Figure 27. Using symmetrical amplifiers to reduce input current (general concept) 1/4 I eI IB I eo I B LM2902 2N 929 0.001 F IB IB 3 M IB 1/4 LM2902 Aux. amplifier for input current compensation 1.5 M Doc ID 2469 Rev 6 11/20 Package information 6 LM2902 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. 12/20 Doc ID 2469 Rev 6 LM2902 6.1 Package information DIP14 package information Figure 28. DIP14 package mechanical drawing Table 4. DIP14 package mechanical data Millimeters Inches Ref. Min. a1 0.51 B 1.39 Typ. Max. Min. Typ. Max. 0.020 1.65 0.055 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 15.24 0.600 F 7.1 0.280 I 5.1 0.201 L Z 3.3 1.27 0.130 2.54 Doc ID 2469 Rev 6 0.050 0.100 13/20 Package information 6.2 LM2902 SO-14 package information Figure 29. SO-14 package mechanical drawing Table 5. SO-14 package mechanical data Dimensions Ref. Millimeters Min. Typ. A a1 Inches Max. Typ. 1.75 0.1 0.2 a2 Max. 0.068 0.003 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45 (typ.) D 8.55 8.75 0.336 0.344 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 7.62 0.300 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M 0.68 S 14/20 Min. 0.026 8 (max.) Doc ID 2469 Rev 6 LM2902 6.3 Package information QFN16 3 x 3 package mechanical data Figure 30. QFN16 3 x 3 mm package mechanical drawing Doc ID 2469 Rev 6 15/20 Package information Table 6. LM2902 QFN16 3 x 3 mm package mechanical data (pitch 0.5 mm) Dimensions Ref. Millimeters Inches Min. Typ. Max. Min. Typ. Max. A 0.80 0.90 1.00 0.031 0.035 0.039 A1 0 0.05 0 A3 0.20 b 0.18 D 2.90 D2 1.50 E 2.90 E2 1.50 e L 3.00 3.00 0.008 0.30 0.007 3.10 0.114 1.80 0.059 3.10 0.114 1.80 0.059 0.50 0.30 0.012 0.118 0.122 0.071 0.118 0.122 0.071 0.020 0.50 0.012 Figure 31. QFN16 3 x 3 mm footprint recommendation 16/20 0.002 Doc ID 2469 Rev 6 0.020 LM2902 6.4 Package information TSSOP14 package information Figure 32. TSSOP14 package mechanical drawing A A2 A1 K e b L c E D E1 PIN 1 IDENTIFICATION 1 Table 7. TSSOP14 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Inches Max. Min. Typ. 1.2 A1 0.05 A2 0.8 b Max. 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 D 4.9 5 5.1 0.193 0.197 0.201 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 e 1 0.65 BSC K 0 L1 0.45 0.60 0.0256 BSC 8 0 0.75 0.018 Doc ID 2469 Rev 6 8 0.024 0.030 17/20 Ordering information LM2902 7 Ordering information Table 8. Order codes Order code Temperature range Package Packing Marking LM2902N DIP14 Tube LM2902N LM2902D LM2902DT SO-14 Tube or tape & reel LM2902PT TSSOP14 (Thin shrink outline package) Tape & reel QFN16 3x3 Tape & reel LM2902YDT(1) SO-14 (Automotive grade level) Tape & reel LM2902YPT(1) TSSOP14 (Automotive grade level) Tape & reel 2902 -40C, +125C LM2902Q4T K5H 2902Y 1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent. 18/20 Doc ID 2469 Rev 6 LM2902 Revision history 8 Revision history Table 9. Document revision history Date Revision 30-Nov-2001 1 Initial release. 01-Jul-2005 2 PPAP references inserted in the datasheet, see Table 8: Order codes. ESD protection inserted in Table 1 on page 3. 31-Oct-2005 3 An error in the device description was corrected on page 1. PPAP reference inserted in the datasheet see Table 8: Order codes. Minor grammatical and formatting changes throughout. 4 Values for thermal resistance junction to ambient and ESD HBM corrected in Table 1: Absolute maximum ratings (AMR). Values for thermal resistance junction to case added in Table 1: Absolute maximum ratings (AMR). Table 2: Operating conditions added. Electrical characteristics figure captions updated. Section 6: Package information updated. Table 8: Order codes moved to end of document. 5 Removed power dissipation parameter from AMR table and added maximum junction temperature. Updated footnotes for automotive grade order codes. Updated format of package information. 6 Added AMR values for input current in Table 1 on page 3. Added QFN16 3 x 3 mm package information in Chapter 7: Ordering information. Removed LM2902YD order code from Table 8 and changed status of LM2902YPT order code. 18-Jun-2007 18-Dec-2007 16-Feb-2012 Changes Doc ID 2469 Rev 6 19/20 LM2902 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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