HA-2542 S E M I C O N D U C T O R 70MHz, High Slew Rate, High Output Current Operational Amplifier November 1996 Features Description * Stable at Gains of 2 or Greater The HA-2542 is a wideband, high slew rate, monolithic operational amplifier featuring an outstanding combination of speed, bandwidth, and output drive capability. * Gain Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . 70MHz * High Slew Rate . . . . . . . . . . . . . . . . . . . . . 300V/s (Min) * High Output Current . . . . . . . . . . . . . . . . . 100mA (Min) * Power Bandwidth . . . . . . . . . . . . . . . . . . . . 5.5MHz (Typ) * Output Voltage Swing . . . . . . . . . . . . . . . . . 10V (Min) Utilizing the advantages of the Harris D.I. technology this amplifier offers 350V/s slew rate, 70MHz gain bandwidth, and 100mA output current. Application of this device is further enhanced through stable operation down to closed loop gains of 2. * Monolithic Bipolar Dielectric Isolation Construction For additional flexibility, offset null and frequency compensation controls are included in the HA-2542 pinout. Applications The capabilities of the HA-2542 are ideally suited for high speed coaxial cable driver circuits where low gain and high output drive requirements are necessary. With 5.5MHz full power bandwidth, this amplifier is most suitable for high frequency signal conditioning circuits and pulse video amplifiers. Other applications utilizing the HA-2542 advantages include wideband amplifiers and fast samplehold circuits. * Pulse and Video Amplifiers * Wideband Amplifiers * Coaxial Cable Drivers * Fast Sample-Hold Circuits * High Frequency Signal Conditioning Circuits Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE PKG. NO. HA1-2542-2 -55 to 125 14 Ld CERDIP F14.3 HA1-2542-5 0 to 75 14 Ld CERDIP F14.3 HA2-2542-2 -55 to 125 12 Pin Metal Can T12.C HA2-2542-5 0 to 75 12 Pin Metal Can T12.C HA3-2542-5 0 to 75 14 Ld PDIP E14.3 For more information on the HA-2542, please refer to Application Note AN552 (Using the HA-2542), or Application Note AN556 (Thermal Safe-Operating-Areas for High Current Op Amps). For a lower power version of this product, please see the HA-2842 data sheet. Pinouts HA-2542 (PDIP, CERDIP) TOP VIEW NC 1 14 NC NC 2 13 BAL HA-2542 (METAL CAN) TOP VIEW V+ NC 1 BAL 3 -IN 4 +IN 5 V- 6 NC 7 COMP 12 COMP + BAL 11 V+ 10 OUT BAL 9 NC (c) Harris Corporation 1996 OUTPUT 11 10 2 + 3 9 4 8 5 6 7 VNC NC NC -IN +IN 8 NC CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright 12 3-222 File Number 2899.2 HA-2542 Absolute Maximum Ratings Thermal Information Supply Voltage (Between V+ and V- Terminals) . . . . . . . . . . . . . 35V Differential Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Output Current . . . . . . . . . . . . . . . . 50mA Continuous, 125mAPEAK Thermal Resistance (Typical, Note 2) JA (oC/W) JC (oC/W) CERDIP Package . . . . . . . . . . . . . . . . 75 20 PDIP Package . . . . . . . . . . . . . . . . . . . 100 N/A Metal Can Package . . . . . . . . . . . . . . . 65 34 Maximum Junction Temperature (Note 1, Hermetic Packages) . 175oC Maximum Junction Temperature (Plastic Package) . . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC Operating Conditions Temperature Range HA-2542-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC HA-2542-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 for ceramic and can packages, and below 150oC for plastic packages. By using Application Note AN556 on Safe Operating Area equations, along with the thermal resistances, proper load conditions can be determined. Heatsinking will be required in many applications. See the "Application Information" section to determine if heat sinking is required for your application. 2. JA is measured with the component mounted on an evaluation PC board in free air. Electrical Specifications VSUPPLY = 15V, RL = 1k, CL 10pF, Unless Otherwise Specified HA-2542-5 0oC to 75oC TEMP. (oC) MIN TYP MAX MIN TYP MAX UNITS 25 - 5 10 - 5 10 mV Full - 8 20 - 8 20 mV Average Offset Voltage Drift Full - 14 - - 14 - V/oC Bias Current 25 - 15 35 - 15 35 A Full - 26 50 - 26 50 A Average Bias Current Drift Full - 66 - - 45 - nA/oC Offset Current 25 - 1 7 - 1 7 A Full - - 9 - - 9 A Input Resistance 25 - 100 - - 100 - k Input Capacitance 25 - 1 - - 1 - pF Common Mode Range Full 10 - - 10 - - V PARAMETER TEST CONDITIONS HA-2542-2 -55oC to 125oC INPUT CHARACTERISTICS Offset Voltage Input Noise Voltage 0.1Hz to 100Hz 25 - 2.2 - - 2.2 - VP-P Input Noise Density f = 1kHz, RG = 0 25 - 10 - - 10 - nV/Hz Input Noise Current Density f = 1kHz, RG = 0 25 - 3 - - 3 - pA/Hz VO = 10V 25 10 30 - 10 30 - kV/V Full 5 15 - 5 20 - kV/V Full 70 100 - 70 100 - dB 25 2 - - 2 - - V/V 25 - 70 - - 70 - MHz Output Voltage Swing Full 10 11 - 10 11 - V Output Current (Note 3) 25 100 - - 100 - - mA Output Resistance 25 - 5 - - 5 - TRANSFER CHARACTERISTICS Large Signal Voltage Gain Common Mode Rejection Ratio VCM = 10V Minimum Stable Gain Gain Bandwidth Product AV = 100 OUTPUT CHARACTERISTICS 3-223 HA-2542 Electrical Specifications VSUPPLY = 15V, RL = 1k, CL 10pF, Unless Otherwise Specified (Continued) TEST CONDITIONS HA-2542-2 -55oC to 125oC HA-2542-5 0oC to 75oC TEMP. (oC) MIN TYP MAX MIN TYP MAX UNITS 25 4.7 5.5 - 4.7 5.5 - MHz Differential Gain (Note 5) 25 - 0.1 - - 0.1 - % Differential Phase (Note 5) 25 - 0.2 - - 0.2 - Degree Harmonic Distortion (Note 7) 25 - <0.04 - - <0.04 - % Rise Time 25 - 4 - - 4 - ns Overshoot 25 - 25 - - 25 - % Slew Rate 25 300 350 - 300 350 - V/s 10V Step to 0.1% 25 - 100 - - 100 - ns 10V Step to 0.01% 25 - 200 - - 200 - ns 25 - 30 - - 30 - mA Full - 31 34.5 - 31 40 mA Full 70 79 - 70 79 - dB PARAMETER Full Power Bandwidth (Note 4) VPEAK = 10V TRANSIENT RESPONSE (Note 6) Settling Time POWER SUPPLY CHARACTERISTICS Supply Current VS = 5V to 15V Power Supply Rejection Ratio NOTES: 3. RL = 50, VO = 5V, Output duty cycle must be reduced for IOUT > 50mA (e.g. 50% duty cycle for 100mA). Slew Rate 4. Full Power Bandwidth guaranteed based on slew rate measurement using: FPBW = ----------------------------- . 2V PEAK 5. Differential gain and phase are measured at 5MHz with a 1V differential input voltage. 6. Refer to Test Circuits section of this data sheet. 7. VIN = 1VRMS; f = 10kHz; AV = 10. Test Circuits and Waveforms IN + OUT - 500 VIN 500 NOTES: 8. VS = 15V. 9. AV = +2. VOUT 10. CL 10pF. Vertical Scale: VIN = 2.0V/Div., VOUT = 5.0V/Div. Horizontal Scale: 200ns/Div. TEST CIRCUIT LARGE SIGNAL RESPONSE 3-224 HA-2542 Test Circuits and Waveforms (Continued) VIN VOUT Vertical Scale: 100mV/Div. Horizontal Scale: 50ns/Div. Vertical Scale: 100mV/Div. Horizontal Scale: 10ns/Div. VS = 15V, RL = 1k. Propagation delay variance is negligible over full temperature range. SMALL SIGNAL RESPONSE PROPAGATION DELAY SETTLING POINT 2.5k 13. HP5082-2810 clipping diodes recommended. 14. Tektronix P6201 FET probe used at settling point. V+ 500 - VOUT + 11. AV = -2. 12. Feedback and summing resistors must be matched (0.1%). 5k 1k VIN NOTES: 15. For 0.01% settling time, heat sinking is suggested to reduce thermal effects and an analog ground plane with supply decoupling is suggested to minimize ground loop errors. V- SETTLING TIME TEST CIRCUIT (See Notes 11 - 15.) 3-225 HA-2542 Schematic Diagram BAL R11 R7 R8 R10 75 R9 QP15 QP13 BAL R25 5k QP14 R12 75 QP16 QP34 V+ R26 5k R15 QP35 QP33 R14 QN12 QP32 QP5 QP31 QP7 QN24 QP11 QN23 QN42 QN44 C1 QN2 QN1 +IN QP36 -IN OUTPUT QN38 R6 R18 COMP DZ45 QP25 QN18 QN9 QN8 QP43 QN40 QN4 QN19 R22 QN10 QN3 QN29 QN38 QN17 C2 QN37 QN20 R2A QN22 QN26 QN21 R1 R2 R27 R3 R28 R4 R16 R17 R5 R13 QN41 R21 V- Application Information (Refer to Application Note AN552 for Further Information) The Harris HA-2542 is a state of the art monolithic device which also approaches the "ALL-IN-ONE" amplifier concept. This device features an outstanding set of AC parameters augmented by excellent output drive capability providing for suitable application in both high speed and high output drive circuits. Primarily intended to be used in balanced 50 and 75 coaxial cable systems as a driver, the HA-2542 could also be used as a power booster in audio systems as well as a power amp in power supply circuits. This device would also be suitable as a small DC motor driver. The applications shown in Figures 2 through Figure 4 demonstrate the HA-2542 at gains of +100 and +2 and as a video cable driver for small signals. Power Dissipation Considerations At high output currents, especially with the PDIP package, care must be taken to ensure that the Maximum Junction Temperature (TJ, see "Absolute Maximum Ratings" table) is not exceeded. As an example consider the HA-2542 in the PDIP package, with a required output current of 20mA at VOUT = 5V. The power dissipation is the quiescent power (1.2W = 30V x 40mA) plus the power dissipated in the output stage (POUT = 200mW = 20mA x (15V - 5V)), or a total of 1.4W. The thermal resistance (JA) of the PDIP package is 100oC/W, which increases the junction temperature by 140oC over the ambient temperature (TA). Remaining below TJMAX requires that TA be restricted to 10oC (150oC - 140oC). Heatsinking would be required for operation at ambient temperatures greater than 10oC. Note that the problem isn't as severe with either the CERDIP or Can packages due to their lower thermal resistances, and higher TJMAX. Nevertheless, it is recommended that Figure 1 be used to ensure that heat sinking is not required. 3-226 HA-2542 MAXIMUM TA WITHOUT HEATSINK (oC) 120 As a result of speed and bandwidth optimization, the HA-2542 can's case potential, when powered-up, is equal to the V- potential. Therefore, contact with other circuitry or ground should be avoided. VOUT = 5V VS = 15V 100 CAN Frequency Compensation 80 60 The HA-2542 may be externally compensated with a single capacitor to ground. This provides the user the additional flexibility in tailoring the frequency response of the amplifier. A guideline to the response is demonstrated on the typical performance curve showing the normalized AC parameters versus compensation capacitance. It is suggested that the user check and tailor the accurate compensation value for each application. As shown additional phase margin is achieved at the loss of slew rate and bandwidth. CERDIP 40 20 PDIP 0 0 5 10 15 20 25 30 35 40 45 50 OUTPUT CURRENT (100% DUTY CYCLE, mA) FIGURE 1. MAXIMUM OPERATING TEMPERATURE vs OUTPUT CURRENT Allowable output power can be increased by decreasing the quiescent dissipation via lower supply voltages. For more information please refer to Application Note AN556, "Thermal Safe Operating Areas for High Current Op Amps". Prototyping Guidelines For best overall performance in any application, it is recommended that high frequency layout techniques be used. This should include: 1) mounting the device through a ground plane: 2) connecting unused pins (NC) to the ground: 3) mounting feedback components on Teflon standoffs and or locating these components as close to the device as possible: 4) placing power supply decoupling capacitors from device supply pins to ground. For example, for a voltage gain of +2 (or -1) and a load of 500pF/2k, 20pF is needed for compensation to give a small signal bandwidth of 30MHz with 40o of phase margin. If a full power output voltage of 10V is needed, this same configuration will provide a bandwidth of 5MHz and a slew rate of 200V/s. If maximum bandwidth is desired and no compensation is needed, care must be given to minimize parasitic capacitance at the compensation pin. In some cases where minimum gain applications are desired, bending up or totally removing this pin may be the solution. In this case, care must also be given to minimize load capacitance. For wideband positive unity gain applications, the HA-2542 can also be over-compensated with capacitance greater than 30pF to achieve bandwidths of around 25MHz. This over-compensation will also improve capacitive load handling or lower the noise bandwidth. This versatility along with the 100mA output current makes the HA-2542 an excellent high speed driver for many power applications. Typical Applications IN + - 30 20 10 0 0 OUT -45 990 -90 10 -135 -180 Frequency (0dB) = 44.9MHz, Phase Margin (0dB) = 40o FREQUENCY RESPONSE FIGURE 2. NONINVERTING CIRCUIT (AVCL = 100) 3-227 PHASE (DEGREES) GAIN (dB) 40 HA-2542 Typical Applications (Continued) + - OUT 50 6 4 2 0 0 50 -45 -90 -135 -180 Frequency (dB) = 56MHz, Phase Margin (3dB) = 40o FREQUENCY RESPONSE FIGURE 3. NONINVERTING CIRCUIT (AVCL = 2) IN 75 + OUT - IN 1k 75 1k OUT 1V/Div.; 100ns/Div. PULSE RESPONSE FIGURE 4. VIDEO CABLE DRIVER (AVCL = 2) 1 RT CCOMP 2 12 V+ 16. Suggested compensation scheme 5pF - 20pF. 11 10 - 3 17. Tested Offset Adjustment Range is |VOS +1mV| minimum referred to output. 9 + 4 18. Typical range is 20mV with RT = 5k. 8 5 6 NOTES: 7 FIGURE 5. SUGGESTED OFFSET VOLTAGE ADJUSTMENT AND FREQUENCY COMPENSATION 3-228 PHASE (DEGREES) IN GAIN (dB) 8 HA-2542 Typical Performance Curves 1000 1000 10 VS = 12V 100 INPUT NOISE VOLTAGE 10 10 INPUT NOISE CURRENT SIX REPRESENTATIVE UNITS 6 OFFSET VOLTAGE (mV) 100 INPUT NOISE CURRENT (pA/Hz) INPUT NOISE VOLTAGE (nV/Hz) 8 4 2 0 -2 -4 -6 -8 1 1 1 10 100 1K 10K -10 100K -60 -40 -20 0 20 FIGURE 6. INPUT NOISE VOLTAGE AND INPUT NOISE CURRENT vs FREQUENCY 60 80 100 120 FIGURE 7. OFFSET VOLTAGE vs TEMPERATURE 29 TA = 25oC VS = 15V VS = 12V 27 SIX REPRESENTATIVE UNITS 100K 25 BIAS CURRENT (A) INPUT RESISTANCE () 40 TEMPERATURE (oC) FREQUENCY (Hz) 10K V+ 1000 + V100 900 23 21 19 17 15 13 11 100 9 10 100K 1M 10M FREQUENCY (Hz) 7 -60 100M -20 0 20 40 60 80 100 120 TEMPERATURE (oC) FIGURE 8. INPUT RESISTANCE vs FREQUENCY FIGURE 9. BIAS CURRENT vs TEMPERATURE 18 120 TA = 25oC 17 VS = 15V SIX REPRESENTATIVE UNITS 16 110 CMRR 15 14 100 13 (dB) BIAS CURRENT (A) -40 12 90 11 10 80 9 PSRR 8 7 5 7 9 11 SUPPLY VOLTAGE (V) 13 15 70 -60 -40 -20 0 20 40 60 80 100 TEMPERATURE (oC) FIGURE 10. BIAS CURRENT vs SUPPLY VOLTAGE FIGURE 11. PSRR AND CMRR vs TEMPERATURE 3-229 120 HA-2542 Typical Performance Curves (Continued) 32 VS = 15V TA = 25oC RL = 2k 30 120 SUPPLY CURRENT (mA) 28 CMRR 100 -55oC 26 +PSRR 80 (dB) 24 22 -PSRR 60 20 40 18 25oC 20 0 16 14 125oC 12 4 6 8 10 12 100 14 1K 10K SUPPLY VOLTAGE (V) FIGURE 12. SUPPLY CURRENT vs SUPPLY VOLTAGE, AT VARIOUS TEMPERATURES 10M 55 RL = 100 400 AV = 2 15V AV = 2 10V 50 45 300 AV = 2 200 5V AV = 10 AV = 10 0 -50 -25 0 25 50 75 VS = 7 30 10V 20 5V 15 100 VS = 15 35 VS = 8 25 15V AV = 10 100 VS = 12 40 AVOL (kV/V) SLEW RATE (V/s) 1M FIGURE 13. PSRR AND CMRR vs FREQUENCY 500 10 -60 125 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (oC) TEMPERATURE (oC) FIGURE 14. SLEW RATE vs TEMPERATURE AT VARIOUS SUPPLY VOLTAGES FIGURE 15. OPEN LOOP GAIN vs TEMPERATURE, AT VARIOUS SUPPLY VOLTAGES 1.4 12.0 6.0 25oC +VOUT 125oC +VOUT 1.3 NORMALIZED TO VALUE AT 0pF -55oC 8.0 +VOUT 10.0 OUTPUT VOLTAGE SWING (V) 100K FREQUENCY (Hz) 4.0 2.0 0.0 -2.0 -4.0 -6.0 -8.0 -10.0 -55oC -12.0 -VOUT 25oC -VOUT 125oC 1.2 PHASE MARGIN 1.1 1.0 0.9 0.8 0.7 SLEW RATE 0.6 BANDWIDTH -VOUT -14.0 0.5 5 7 9 11 SUPPLY VOLTAGE (V) 13 15 FIGURE 16. OUTPUT VOLTAGE SWING vs SUPPLY VOLTAGE, AT VARIOUS TEMPERATURES 0 5 10 15 20 COMPENSATION CAPACITANCE (pF) 25 FIGURE 17. NORMALIZED AC PARAMETERS vs COMPENSATION CAPACITANCE 3-230 HA-2542 Typical Performance Curves HA-2542 AV = 10 VS = 15V TA = 25oC MAXIMUM SWING RL = 1k 10 8 MAXIMUM SWING UNDISTORTED SWING 10 RL = 1k MAXIMUM SWING 8 UNDISTORTED SWING 6 4 RL = 100 MAXIMUM SWING UNDISTORTED SWING 2 2 0 0.1 1 10 0 0.1 100 1 FREQUENCY (Hz) FIGURE 18. OUTPUT VOLTAGE SWING vs FREQUENCY 70 HA-2542 TA = 25oC RL = 1k VS = 15V AV = 1000 GAIN (dB) 25oC 12 50 40 AV = 100 125oC 9 GAIN 6 -55oC 3 PHASE 0 + - AV = 10 V10 0 0.1 AV = 2 1 10 100 100K FREQUENCY (MHz) FIGURE 20. FREQUENCY RESPONSE CURVES -55oC V+ VIN 30 20 100 FIGURE 19. OUTPUT VOLTAGE SWING vs FREQUENCY GAIN (dB) 60 10 FREQUENCY (Hz) 25oC GAIN = +2 500 VS = 8V RL = 1k 500 CL 10pF VIN 90mV 125oC 1M 10M FREQUENCY (Hz) 0 -45 -90 -135 -180 PHASE (DEGREES) 4 UNDISTORTED SWING RL = 100 HA-2542 AV = 10 VS = 10V TA = 25oC 12 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 12 6 (Continued) 100M FIGURE 21. HA-2542 CLOSED LOOP GAIN vs TEMPERATURE 3-231 HA-2542 Die Characteristics DIE DIMENSIONS: SUBSTRATE POTENTIAL (Powered Up): 106 mils x 73 mils x 19 mils 2700m x 1850m x 483m VTRANSISTOR COUNT: METALLIZATION: 43 Type: Al, 1% Cu Thickness: 16kA 2kA PROCESS: Bipolar Dielectric Isolation PASSIVATION Type: Nitride (Si3N4) over Silox (SiO2, 5% Phos.) Silox Thickness: 12kA 2kA Nitride Thickness: 3.5kA 1.5kA Metallization Mask Layout HA-2542 -IN +IN BAL BAL V- OUTPUT 3-232 V+ COMP