HA-2541 Data Sheet September 1998 File Number 2898.3 40MHz, Fast Settling, Unity Gain Stable, Operational Amplifier Features The HA-2541 is the first unity gain stable monolithic operational amplifier to achieve 40MHz unity gain bandwidth. A major addition to the Intersil series of high speed, wideband op amps, the HA-2541 is designed for video and pulse applications requiring stable amplifier response at low closed loop gains. • High Slew Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . 250V/µs The uniqueness of the HA-2541 is that its slew rate and bandwidth characteristics are specified at unity gain. Historically, high slew rate, wide bandwidth and unity gain stability have been incompatible features for a monolithic operational amplifier. But features such as 250V/µs slew rate and 40MHz unity gain bandwidth clearly show that this is not the case for the HA-2541. These features, along with 90ns settling time to 0.1%, make this product an excellent choice for high speed data acquisition systems. MIL-STD-883 product and data sheets are available upon request, Intersil AnswerFAX (407-724-7800) document #3698. For further application suggestions on the HA-2541, please refer to Application Note AN550 (Using the HA-2541), and Application Note AN556 (Thermal Safe Operating Areas for High Current Operational Amplifiers), Intersil AnswerFAX (407-724-7800) document #9550 and 9556. Also see ‘Applications’ in this data sheet. For a lower power version of this product, please see the HA-2841 data sheet. • Unity Gain Bandwidth. . . . . . . . . . . . . . . . . . . . . . . 40MHz • Low Offset Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 0.8mV • Fast Settling Time (0.1%) . . . . . . . . . . . . . . . . . . . . . 90ns • Power Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . 4MHz • Output Voltage Swing (Min) . . . . . . . . . . . . . . . . . . . ±10V • Unity Gain Stability • Monolithic Bipolar Dielectric Isolation Construction Applications • Pulse and Video Amplifiers • Wideband Amplifiers • High Speed Sample-Hold Circuits • Fast, Precise D/A Converters • High Speed A/D Input Buffer Ordering Information PART NUMBER HA1-2541-5 TEMP. RANGE (oC) PACKAGE 0 to 75 14 Ld CERDIP PKG. NO. F14.3 Pinout HA1-2541 (CERDIP) TOP VIEW NC 1 14 NC NC 2 13 NC BAL 3 12 BAL -IN 4 +IN 5 1 - + 11 V+ 10 OUT V- 6 9 NC NC 7 8 NC CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999 HA-2541 Absolute Maximum Ratings Thermal Information Voltage Between V+ and V- Terminals. . . . . . . . . . . . . . . . . . . . 35V Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Peak Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . 28mARMS Thermal Resistance (Typical, Note 2) θJA (oC/W) θJC (oC/W) CERDIP Package. . . . . . . . . . . . . . . . . 75 20 Maximum Junction Temperature (Note 1) . . . . . . . . . . . . . . . .175oC Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC Operating Conditions Temperature Range HA-2541-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC 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. NOTES: 1. Maximum power dissipation with load conditions must be designed to maintain the maximum junction temperature below 175oC. By using Application Note AN556 on Safe Operating Area equations, along with the thermal resistances, proper load conditions can be determined. Heat sinking is recommended above 75oC. 2. θJA is measured with the component mounted on an evaluation PC board in free air. VSUPPLY = ±15V, RL = 1kΩ, CL ≤ 10pF, Unless Otherwise Specified Electrical Specifications PARAMETER TEST CONDITIONS TEMP (oC) HA-2541-5 0oC TO 75oC MIN TYP MAX UNITS INPUT CHARACTERISTICS Offset Voltage 25 - 1 2 mV Full - - 6 mV Average Offset Voltage Drift Full - 9 - µV/oC Bias Current 25 - 11 35 µA Full - - 50 µA Average Bias Current Drift Full - 85 - nA/oC Offset Current 25 - 1 7 µA Full - - 9 µA Input Resistance 25 - 100 - kΩ Input Capacitance 25 - 1 - pF Full ±10 ±11 - V Input Noise Voltage f = 1kHz, Rg = 0Ω 25 - 10 - nV/√Hz Input Noise Current f = 1kHz, Rg = 0Ω 25 - 4 - pA/√Hz VO = ±10V 25 10 16 - kV/V Full 5 - - kV/V Full 70 90 - dB 25 1 - - V/V VO = 90mV 25 - 40 - MHz Output Voltage Swing RL = 1kΩ Full ±10 ±11 - V Output Current RL = 1kΩ 25 ±10 ±15 - mA 25 - 2 - Ω MHz Common Mode Range TRANSFER CHARACTERISTICS Large Signal Voltage Gain VCM = ±10V Common Mode Rejection Ratio Minimum Stable Gain Unity Gain Bandwidth OUTPUT CHARACTERISTICS Output Resistance Full Power Bandwidth (Note 3) VP = 10V 25 3 4 - Differential Gain Note 4 25 - 0.1 - % Differential Phase Note 4 25 - 0.2 - Degrees Harmonic Distortion Note 6 25 - <0.01 - % 2 HA-2541 VSUPPLY = ±15V, RL = 1kΩ, CL ≤ 10pF, Unless Otherwise Specified (Continued) Electrical Specifications TEST CONDITIONS HA-2541-5 0oC TO 75oC TEMP (oC) MIN Rise Time 25 Overshoot 25 PARAMETER TYP MAX UNITS - 4 - ns - 40 - % TRANSIENT RESPONSE (Note 5) Slew Rate Settling Time 25 200 250 - V/µs 10V Step To 0.1% 25 - 90 - ns 10V Step To 0.01% 25 - 175 - ns 25 - 29 - mA Full - - 40 mA Full 70 78 - dB POWER REQUIREMENTS Supply Current VS = ±5V to ±15V Power Supply Rejection Ratio NOTES: Slew Rate 3. Full Power Bandwidth guaranteed based on slew rate measurement using: FPBW = ----------------------------- . 2πV PEAK 4. Differential Gain and Phase are measured with a 1V differential voltage at 5MHz. 5. Refer to Test Circuits section of this data sheet. 6. f = 10kHz; AV = 5; VO = 14VP-P. Test Circuits and Waveforms SETTLING POINT VIN + VOUT - 1kΩ 5kΩ NOTES: 7. VS = ±15V. 5kΩ 2kΩ 8. AV = +1. 2kΩ 9. CL ≤ 10pF. VIN - + VOUT NOTES: 10. AV = -1. 11. Feedback and summing resistor ratios should be 0.1% matched. 12. HP5082-2810 clipping diodes recommended. 13. Tektronix P6201 FET probe used at settling point. FIGURE 1. TRANSIENT RESPONSE TEST CIRCUIT FIGURE 2. SETTLING TIME TEST CIRCUIT VIN VIN 0V 0V VOUT VOUT 0V 0V Vertical Scale: 5V/Div. Horizontal Scale: 50ns/Div. LARGE SIGNAL RESPONSE 3 Vertical Scale: VIN = 100mV/Div., VOUT = 50mV/Div. Horizontal Scale: 20ns/Div. SMALL SIGNAL RESPONSE HA-2541 Test Circuits and Waveforms (Continued) NOTES: 14. VS = ±15V, RL = 1kΩ. 15. TA = 25oC. VIN 16. Propagation delay variance is negligible over full temperature range. VOUT Vertical Scale: 100mV/Div. Horizontal Scale: 5ns/Div. PROPAGATION DELAY Schematic Diagram BALANCE BALANCE V+ R7 R8 R9 QP15 QP13 R11 R10 R12 QP14 QP16 QP33 R27 5K R15 R28 5K QP55 R23 QN49 QP32 QP5 QP31 QP7 C1 QN23 QP11 QP30 +IN QN45 R6 QN44 QN20 -IN QN2 QN1 VOUT QP25 R19 Z41 QN34 QN18 QP54 QN9 QN8 R24 QN4 C2 QN52 QN20 QN21 R1 R2 QN5 QN37 R31 QN42 QN22 QN26 R16 R4 R3 QN27 QN47 R30 R29 QN46 QN29 QN3 QN51 QN17 R21 QN10 R17 R5 R13 QN43 QN28 R18 R20 R14 R32 V- 4 HA-2541 Typical Applications (Also see Application Note AN550) Application 1 Application 2 High power amplifiers and buffers are in use in a wide variety of applications. Many times the “high power” capability is needed to drive large capacitive loads as well as low value resistive loads. In both cases the final driver stage is usually a power transistor of some type, but because of their inherently low gain, several stages of pre-drivers are often required. The HA-2541, with its 10mA output rating, is powerful enough to drive a power transistor without additional stages of current amplification. This capability is well demonstrated with the high power buffer circuit in Figure 3. VIDEO The HA-2541 acts as the pre-driver to the output power transistor. Together, they form a unity gain buffer with the ability to drive three 50Ω coaxial cables in parallel, each with a capacitance of 2000pF. The total combined load is 16.6Ω and 6000pF capacitance. The addition of a clamping circuit restores DC levels at the output of an amplifier stage. The circuit shown in Figure 4 utilizes the HA-5320 sample and hold amplifier as the DC clamp. Also shown is a 3.57MHz trap in series, which will block the color burst portion of the video signal and allow the DC level to be amplified and restored. One of the primary uses of the HA-2541 is in the area of video applications. These applications include signal construction, synchronization addition and removal, as well as signal modification. A wide bandwidth device such as the HA-2541 is well suited for use in this class of amplifier. This, however, is a more involved group of applications than ordinary amplifier applications since video signals contain precise DC levels which must be retained. 532pF 50Ω + R1 1kΩ R2 2N5886 HA-2541 D3 - 1kΩ R3 1kΩ D1 HP2835 100Ω D2 HP2835 HA-2541 3.57MHz TRAP 1kΩ 1kΩ 1kΩ LOAD 16.6Ω; 6000pF OR 12.5Ω; 6000pF 75Ω FIGURE 3. DRIVING POWER TRANSISTORS TO GAIN ADDITIONAL CURRENT BOOSTING FIGURE 4. VIDEO DC RESTORER Suggested Offset Voltage Adjustment RT NC 1 14 NC NC 2 13 NC BAL -IN 3 12 4 11 +IN 5 V- 6 NC 7 5 - + BAL V+ 10 OUT 9 NC 8 NC NOTE: Tested Offset Adjustment Range is |VOS + 1mV| minimum referred to output. Typical range is ±15mV for RT = 5kΩ. HA-2541 Typical Performance Curves 3.0 TA = 25oC, VS = ±15V 2.5 2.0 OFFSET VOLTAGE (mV) INPUT RESISTANCE (Ω) 100K 10K V+ 1000 + - V- 900Ω 100 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 100Ω -2.5 10 100K 1M 10M FREQUENCY (Hz) 100 100 ENI 10 10 INI 1 100K 1 100 1K FREQUENCY (Hz) BIAS CURRENT (µA) INPUT NOISE CURRENT (pA/√Hz) TA = 25oC 10 10K 0 20 40 60 80 100 120 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 -60 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (oC) FIGURE 7. NOISE DENSITY vs FREQUENCY FIGURE 8. BIAS CURRENT vs TEMPERATURE (6 REPRESENTATIVE UNITS) 60 12 10 125oC +VOUT 25oC 8 -55oC +VOUT 6 4 50 IOUT (mA) -2 -4 20 10 -55oC -IOUT 0 -12 125oC -IOUT -30 125oC +VOUT -14 5 25oC -IOUT -20 25oC +VOUT -10 3 +IOUT -10 -55oC +VOUT -8 125oC +IOUT -55oC +IOUT 30 0 -6 25oC 40 +VOUT 2 VOUT (V) -20 FIGURE 6. OFFSET VOLTAGE vs TEMPERATURE (6 REPRESENTATIVE UNITS) 1000 1000 1 -40 TEMPERATURE (oC) FIGURE 5. INPUT RESISTANCE vs FREQUENCY INPUT NOISE VOLTAGE (nV/√Hz) -3.0 -60 100M 7 9 11 SUPPLY VOLTAGE (±V) -40 13 15 FIGURE 9. OUTPUT VOLTAGE SWING vs SUPPLY VOLTAGE 6 3 5 7 9 11 SUPPLY VOLTAGE (±V) 13 FIGURE 10. OUTPUT CURRENT vs SUPPLY VOLTAGE 15 HA-2541 Typical Performance Curves (Continued) 30 1.2 28 1.1 NORMALIZED SLEW RATE SUPPLY CURRENT (mA) 26 24 22 20 125oC 18 16 25oC 14 12 0.9 125oC 0.8 0.7 V+ 0.6 VIN -55oC 8 0.3 25oC 6 0.2 VOUT RL V- CL RL = 2kΩ CL ≤ 10pF 0.1 3 5 11 7 9 SUPPLY VOLTAGE (±V) 13 15 FIGURE 11. SUPPLY CURRENT vs SUPPLY VOLTAGE 5 86 85 84 125oC 82 -55oC 25oC +PSRR +PSRR 81 125oC 80 -PSRR 79 78 25oC -55oC -PSRR -PSRR +PSRR CMRR (dB) 83 77 76 3 5 7 9 11 13 122 120 118 116 114 112 110 108 106 104 102 100 98 96 94 92 90 13 15 25o C -55oC 3 15 5 7 9 11 13 15 SUPPLY VOLTAGE (±V) FIGURE 13. PSRR vs SUPPLY VOLTAGE (AVERAGE OF 3 LOTS) FIGURE 14. CMRR vs SUPPLY VOLTAGE (AVERAGE OF 3 LOTS) 20 VS = ±15V, RL = 2kΩ, TA = 25oC 19 18 CMRR 17 +PSRR ±AVOL AT TA ≥ 25oC 16 AVOL (kV/V) 100 9 11 SUPPLY VOLTAGE (±V) 125oC SUPPLY VOLTAGE (±V) 120 7 FIGURE 12. SLEW RATE vs SUPPLY VOLTAGE (NORMALIZED WITH VS = ±15V AT 25oC) 87 80 (dB) + - 0.5 0.4 -55oC 10 4 PSRR (dB) 1.0 -PSRR 60 40 15 14 13 ±AVOL AT TA = -55oC 12 20 11 0 10 9 8 100 1K 10K 100K 1M FREQUENCY (Hz) FIGURE 15. REJECTION RATIOS vs FREQUENCY 7 10M 8 10 12 14 SUPPLY VOLTAGE (±V) FIGURE 16. OPEN LOOP GAIN vs SUPPLY VOLTAGE (AVERAGE OF 3 LOTS) HA-2541 Typical Performance Curves (Continued) 100 20 15 40 10 20 180 135 10 OPEN LOOP 100 90 45 PHASE 0 1K 10K 100K 1M FREQUENCY (Hz) AV = -100 10M AV = -10 PHASE 0 0 RS VIN -10 -45 + - 50Ω 100Ω AV +10 PHASE VS = ±15V o T = 25 C 1K 10K 100K 1M FREQUENCY (Hz) RS = 0Ω AV = -1 RS = 5kΩ VS = ±8V, AV = +1 TA = 125oC GAIN (dB) 6 GAIN TA = 25oC TA = -55oC 3 0 0 -45 -3 -90 -6 -9 PHASE TA = 125oC TA = 25oC TA = -55oC -135 -180 -225 100K 1M 10M FREQUENCY (Hz) 100M FIGURE 19. CLOSED LOOP FREQUENCY RESPONSE 8 -180 10M 100M RS = 50kΩ FIGURE 18. SMALL SIGNAL BANDWIDTH vs SOURCE RESISTANCE RL = 2kΩ, CL ≤ 10pF 9 -90 -135 100M FIGURE 17. GAIN AND PHASE FREQUENCY RESPONSE VOUT 900Ω PHASE (DEGREES) VS = ±15V RL = 1kΩ CL ≤ 10pF TA = 25oC 5 -5 PHASE (DEGREES) 0 GAIN PHASE (DEGREES) 60 GAIN (dB) GAIN (dB) VS = ±15V, RL = 1kΩ GAIN 80 HA-2541 Die Characteristics DIE DIMENSIONS: SUBSTRATE POTENTIAL (Powered Up): 80 mils x 90 mils x 19 mils 2020µm x 2280µm x 483µm VTRANSISTOR COUNT: METALLIZATION: 41 Type: Al, 1% Cu Thickness: 16kÅ ±2kÅ PROCESS: Bipolar Dielectric Isolation PASSIVATION: Type: Nitride(Si3N4) over Silox (SiO2, 5% Phos.) Silox Thickness: 12kÅ ±2kÅ Nitride Thickness: 3.5kÅ ±1.5kÅ Metallization Mask Layout HA-2541 -IN +IN BAL V- NC BAL OUTPUT V+ 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 9