HFA1110 TM Data Sheet 750MHz, Low Distortion Unity Gain, Closed Loop Buffer The HFA1110 is a unity gain closed loop buffer that achieves -3dB bandwidth of 750MHz, while offering excellent video performance and low distortion. Manufactured on Intersil's proprietary complementary bipolar UHF-1 process, the HFA1110 also offers very fast slew rate, and high output current. It is one more example of Intersil's intent to enhance its leadership position in products for high speed signal processing applications. The HFA1110's settling time of 11ns to 0.1%, low distortion and ability to drive capacitive loads make it an ideal flash A/D driver. The HFA1110 is an enhanced, pin compatible upgrade for the AD9620, AD9630, CLC110, EL2072, BUF600 and BUF601. For buffer applications requiring a standard op amp pinout, or selectable gain (-1, +1, +2), see the HFA1112 data sheet. For output limiting see the HFA1113 data sheet. For military grade product please refer to the HFA1110/883 data sheet. February 1999 File Number 2944.7 Features * Wide -3dB Bandwidth. . . . . . . . . . . . . . . . . . . . . . 750MHz * Very Fast Slew Rate . . . . . . . . . . . . . . . . . . . . . . 1300V/s * Fast Settling Time (0.2%) . . . . . . . . . . . . . . . . . . . . . . 7ns * High Output Current . . . . . . . . . . . . . . . . . . . . . . . . . 60mA * Fixed Gain of +1 * Gain Flatness (100MHz) . . . . . . . . . . . . . . . . . . . . 0.03dB * Differential Phase . . . . . . . . . . . . . . . . . . . 0.025 Degrees * Differential Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.04% * 3rd Harmonic Distortion (50MHz). . . . . . . . . . . . . . -80dBc * 3rd Order Intercept (100MHz) . . . . . . . . . . . . . . . . 30dBm Applications * Video Switching and Routing * RF/IF Processors * Driving Flash A/D Converters * High-Speed Communications * Impedance Transformation Pinout * Line Driving HFA1110 (SOIC) TOP VIEW * Radar Systems Ordering Information V+ 1 OPT V+ 2 NC IN 8 OUT PART NUMBER (BRAND) 7 NC 3 6 OPT V- HFA1110IB (H1110I) 4 5 V- HFA1110EVAL - + TEMP. RANGE (oC) -40 to 85 PACKAGE 8 Ld SOIC PKG. NO. M8.15 High Speed Buffer DIP Evaluation Board Pin Descriptions NAME PIN NUMBER V+ 1 Positive Supply Opt V+ 2 Optional Positive Supply NC 3 No Connection IN 4 Input V- 5 Negative Supply Opt V- 6 Optional Negative Supply NC 7 No Connection OUT 8 Output DESCRIPTION 3-1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright (c) Intersil Corporation 2000 HFA1110 Absolute Maximum Ratings Thermal Information Voltage Between V+ and V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12V DC Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSUPPLY Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60mA Thermal Resistance (Typical, Note 1) JA (oC/W) SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only) Operating Conditions Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: 1. JA is measured with the component mounted on an evaluation PC board in free air. Electrical Specifications VSUPPLY = 5V, RL = 100, Unless Otherwise Specified PARAMETER TEST CONDITIONS TEMP (oC) MIN TYP MAX UNITS INPUT CHARACTERISTICS Output Offset Voltage (Note 2) 25 - 8 25 mV Full - - 35 mV Output Offset Voltage Drift Full - 10 - V/oC PSRR 25 39 45 - dB Full 35 - - dB 25 - 14 - nV/Hz Input Noise Voltage (Note 2) 100kHz Input Noise Current (Note 2) 100kHz Input Bias Current (Note 2) 25 - 51 - pA/Hz 25 - 10 40 A Full - - 65 A Input Resistance 25 25 50 - k Input Capacitance 25 - 2 - pF TRANSFER CHARACTERISTICS Gain VOUT = 2VP-P 2V Full Scale DC Non-Linearity (Note 2) 25 0.980 0.990 1.02 V/V Full 0.975 - 1.025 V/V 25 - 0.003 - % OUTPUT CHARACTERISTICS Output Voltage (Note 2) Output Current (Note 2) RL = 50 25 3.0 3.3 - V Full 2.5 3.0 - V 25, 85 50 60 - mA -40 35 50 - mA Full 4.5 - 5.5 V POWER SUPPLY CHARACTERISTICS Supply Voltage Range Supply Current (Note 2) 25 - 21 26 mA Full - - 33 mA VOUT = 0.2VP-P 25 - 750 - MHz Slew Rate VOUT = 5VP-P 25 - 1300 - V/s Full Power Bandwidth (Note 2) VOUT = 4VP-P 25 - 150 - MHz AC CHARACTERISTICS -3dB Bandwidth (Note 2) To 100MHz 25 - 0.03 - dB To 30MHz 25 - 0.01 - dB Linear Phase Deviation (Note 2) DC to 100MHz 25 - 0.3 - Degrees 2nd Harmonic Distortion (Note 2) 50MHz, VOUT = 2VP-P 25 - -60 - dBc 3rd Harmonic Distortion (Note 2) 50MHz, VOUT = 2VP-P 25 - -80 - dBc 3rd Order Intercept (Note 2) 100MHz 25 - 30 - dBm Gain Flatness (Note 2) 3-2 HFA1110 Electrical Specifications VSUPPLY = 5V, RL = 100, Unless Otherwise Specified (Continued) PARAMETER TEST CONDITIONS TEMP (oC) MIN TYP MAX UNITS -1dB Gain Compression 100MHz 25 - 14 - dBm Reverse Gain (S12, Note 2) 100MHz, VOUT = 1VP-P 25 - -60 - dB Rise Time VOUT = 0.5V Step 25 - 0.5 - ns Overshoot (Note 2) VOUT = 1.0V Step, Input Signal Rise/Fall = 1ns 25 - 2.5 - % 0.2% Settling Time (Note 2) VOUT = 1V to 0V 25 - 7 - ns 0.1% Settling Time (Note 2) VOUT = 1V to 0V 25 - 11 - ns TRANSIENT RESPONSE Overdrive Recovery Time 25 - 15 - ns Differential Gain 3.58MHz, RL = 75 25 - 0.04 - % Differential Phase 3.58MHz, RL = 75 25 - 0.025 - Degrees NOTE: 2. See Typical Performance Curves for more information. Application Information PC Board Layout 50 0.1F The frequency performance of this amplifier depends a great deal on the amount of care taken in designing the PC board. The use of low inductance components such as chip resistors and chip capacitors is strongly recommended, while a solid ground plane is a must! Attention should be given to decoupling the power supplies. A large value (10F) tantalum in parallel with a small value chip (0.1F) capacitor works well in most cases. 1 +5V 10F 8 2 7 HFA1110 IN 3 6 4 5 SCHEMATIC DIAGRAM BOTTOM LAYOUT An example of a good high frequency layout is the Evaluation Board shown below. Evaluation Board TOP LAYOUT The layout and schematic of the board are shown here: NOTE: The SOIC version may be evaluated in the DIP board by using a SOIC-to-DIP adapter such as Aries Electronics Part Number 08-350000-10. 3-3 -5V 10F 50 Terminated microstrip signal lines are recommended at the input and output of the device. Output capacitance, such as that resulting from an improperly terminated transmission line will degrade the frequency response of the amplifier and may cause oscillations. In most cases, the oscillation can be avoided by placing a resistor (RS) in series with the output. See the "Recommended RS vs Load Capacitance" graph for specific recommendations. An evaluation board is available for the HFA1110 (part number HFA1110EVAL). Please contact your local sales office for information. OUT RS 1 0.1F HFA1110 Typical Performance Curves VSUPPLY = 5V, TA = 25oC, RL = 100, Unless Otherwise Specified 1.2 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (mV) 120 80 40 0 -40 -80 0.8 0.4 0 -0.4 -0.8 -120 -1.2 TIME (5ns/DIV.) TIME (5ns/DIV.) FIGURE 1. SMALL SIGNAL PULSE RESPONSE FIGURE 2. LARGE SIGNAL PULSE RESPONSE 2 -45 -2 -90 -3 -135 -4 -180 PHASE VOUT = 200mVP-P -5 -225 RL = 100 3 0 RL = 50 -3 -6 0 -90 -180 -270 -6 -7 -8 0 200M 400M 600M 800M 1M 1G 10M -360 1G 100M FREQUENCY (Hz) FREQUENCY (Hz) FIGURE 3. FREQUENCY RESPONSE FIGURE 4. FREQUENCY RESPONSE FOR VARIOUS LOAD RESISTORS 2 890 1 870 BANDWIDTH (MHz) 0 -1 GAIN (dB) -270 RL = 1k PHASE (DEGREES) 0 -1 GAIN (dB) GAIN (dB) 0 RL = 1k 6 PHASE (DEGREES) GAIN VOUT = 200mVP-P VOUT = 1VP-P 1 -2 VOUT = 200mVP-P VOUT = 2.5VP-P VOUT = 4VP-P -3 -4 850 830 810 790 770 -5 750 -6 730 -7 710 -8 1M 10M 100M FREQUENCY (Hz) 1G FIGURE 5. FREQUENCY RESPONSE FOR VARIOUS OUTPUT VOLTAGES 3-4 -50 -30 -10 10 30 50 70 90 110 TEMPERATURE (oC) FIGURE 6. -3dB BANDWIDTH vs TEMPERATURE 130 HFA1110 Typical Performance Curves VSUPPLY = 5V, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued) 2.0 0.20 1.5 DEVIATION (DEGREES) 0.25 GAIN (dB) 0.15 0.10 0.05 0 -0.05 1.0 0.5 0 -0.5 -1.0 -1.5 -0.10 -2.0 1M 10M FREQUENCY (Hz) 0 100M 200M 15M 30M 45M 60M 75M 90M 105M 120M 135M 150M FREQUENCY (Hz) FIGURE 7. GAIN FLATNESS FIGURE 8. DEVIATION FROM LINEAR PHASE -30 +90 PHASE GAIN -40 +45 0 -50 -60 INTERCEPT POINT (dBm) +135 PHASE (DEGREES) GAIN (dB) 50 -20 40 30 20 10 VOUT = 1VP-P 0 0 200M 400M 600M 800M 1G 0 50 100 150 200 250 300 350 400 FREQUENCY (MHz) FREQUENCY (Hz) FIGURE 9. REVERSE GAIN AND PHASE (S12) FIGURE 10. TWO-TONE, THIRD ORDER INTERMODULATION INTERCEPT -30 -30 -40 -40 DISTORTION (dBc) DISTORTION (dBc) 100 MHz -50 50 MHz -60 -70 30 MHz -80 100 MHz -50 -60 -70 50 MHz -80 30 MHz -90 -90 -100 -100 -5 -3 -1 1 3 5 7 9 11 OUTPUT POWER (dBm) FIGURE 11. SECOND HARMONIC DISTORTION vs POUT 3-5 13 -5 -3 -1 1 3 5 7 9 11 OUTPUT POWER (dBm) FIGURE 12. THIRD HARMONIC DISTORTION vs POUT 13 HFA1110 Typical Performance Curves VSUPPLY = 5V, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued) 0.8 0.4 0.2 0 -0.2 -0.4 RS () SETTLING ERROR (%) VOUT = 1V -0.8 50 45 40 35 30 25 20 15 10 5 0 0 -5 0 5 10 15 20 25 30 35 40 40 80 120 45 160 200 240 280 320 360 CL (pF) TIME (ns) FIGURE 13. SETTLING RESPONSE FIGURE 14. RECOMMENDED SERIES OUTPUT RESISTOR vs CLOAD 0.04 21 RL = 200 0.02 15 RL = 100 12 VO = 2.0VP-P VO = 1.0VP-P 9 RL = 1k ERROR (%) OVERSHOOT (%) 18 6 0 -0.02 VO = 0.5VP-P 3 0 200 300 400 500 600 700 800 900 -0.04 1000 -3.0 -2.0 -1.0 0 1.0 INPUT VOLTAGE (V) INPUT RISE TIME (ps) 3.0 FIGURE 16. INTEGRAL LINEARITY ERROR 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 25 24 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) FIGURE 15. OVERSHOOT vs INPUT RISETIME 2.0 23 22 21 20 19 18 17 5 6 7 8 9 TOTAL SUPPLY VOLTAGE (V+ - V-, V) FIGURE 17. SUPPLY CURRENT vs SUPPLY VOLTAGE 3-6 10 -60 -40 -20 0 20 40 60 80 100 TEMPERATURE (oC) FIGURE 18. SUPPLY CURRENT vs TEMPERATURE 120 HFA1110 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 -60 VSUPPLY = 5V, TA = 25oC, RL = 100, Unless Otherwise Specified (Continued) 10 OUTPUT OFFSET VOLTAGE (mV) BIAS CURRENT (A) Typical Performance Curves 9.8 9.6 9.4 9.2 9 8.8 8.6 8.4 8.2 8 -40 -20 0 20 40 60 80 100 7.8 -60 120 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (oC) TEMPERATURE (oC) FIGURE 19. BIAS CURRENT vs TEMPERATURE FIGURE 20. OFFSET VOLTAGE vs TEMPERATURE 3.8 100 200 80 160 60 120 3.5 +VOUT (RL = 100) 3.4 3.3 +VOUT (RL = 50) |-VOUT |(RL = 100) 3.2 3.1 |-VOUT |(RL = 50) 3 40 80 INI 20 40 2.9 2.8 -60 ENI -40 -20 0 20 40 60 80 100 TEMPERATURE (oC) FIGURE 21. OUTPUT VOLTAGE vs TEMPERATURE 3-7 120 0 100 1K 10K 0 100K FREQUENCY (Hz) FIGURE 22. INPUT NOISE vs FREQUENCY NOISE CURRENT (pA/Hz) 3.6 NOISE VOLTAGE (nV/Hz) OUTPUT VOLTAGE (V) 3.7 HFA1110 Die Characteristics DIE DIMENSIONS: PASSIVATION: 63 mils x 44 mils x 19 mils 1600m x 1130m x 483m Type: Nitride Thickness: 4kA 0.5kA TRANSISTOR COUNT: METALLIZATION: 52 Type: Metal 1: AlCu(2%)/TiW Thickness: Metal 1: 8kA 0.4kA Type: Metal 2: AlCu(2%) Thickness: Metal 2: 16kA 0.8kA SUBSTRATE POTENTIAL (POWERED UP): Floating (Recommend Connection to V-) Metallization Mask Layout HFA1110 NC IN V- NC NC NC NC V+ OUT All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets 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 web site http://www.intersil.com 3-8