HA-2544 Data Sheet April 1999 File Number 2900.4 50MHz, Video Operational Amplifier Features The HA-2544 is a fast, unity gain stable, monolithic op amp designed to meet the needs required for accurate reproduction of video or high speed signals. It offers high voltage gain (6kV/V) and high phase margin (65 degrees) while maintaining tight gain flatness over the video bandwidth. Built from high quality Dielectric Isolation, the HA-2544 is another addition to the Intersil series of high speed, wideband op amps, and offers true video performance combined with the versatility of an op amp. • Gain Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . 50MHz The primary features of the HA-2544 include 50MHz Gain Bandwidth, 150V/µs slew rate, 0.03% differential gain error and gain flatness of just 0.12dB at 10MHz. High performance and low power requirements are met with a supply current of only 10mA. Uses of the HA-2544 range from video test equipment, guidance systems, radar displays and other precise imaging systems where stringent gain and phase requirements have previously been met with costly hybrids and discrete circuitry. The HA-2544 will also be used in non-video systems requiring high speed signal conditioning such as data acquisition systems, medical electronics, specialized instrumentation and communication systems. Military (/883) product and data sheets are available upon request. Ordering Information PART NUMBER (BRAND) HA3-2544C-5 HA7-2544-2 TEMP. RANGE (oC) 0 to 75 -55 to 125 1 PACKAGE PKG. NO. 8 Ld PDIP E8.3 8 Ld CERDIP F8.3A • High Slew Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . 150V/µs • Low Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . 10mA • Differential Gain Error. . . . . . . . . . . . . . . . . . . . . . . 0.03% • Differential Phase Error . . . . . . . . . . . . . . . . 0.03 Degrees • Gain Flatness at 10MHz. . . . . . . . . . . . . . . . . . . . . 0.12dB Applications • Video Systems • Imaging Systems • Video Test Equipment • Pulse Amplifiers • Radar Displays • Signal Conditioning Circuits • Data Acquisition Systems Pinout HA-2544 (CERDIP) HA-2544C (PDIP) TOP VIEW BAL 1 -IN 2 +IN 3 V- 4 + 8 NC 7 V+ 6 OUT 5 BAL 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-2544 Absolute Maximum Ratings Thermal Information Voltage Between V+ and V- Terminals. . . . . . . . . . . . . . . . . . . . 35V Differential Input Voltage (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . 6V Peak Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±40mA Thermal Resistance (Typical, Note 2) θJA (oC/W) θJC (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . 92 N/A CERDIP Package. . . . . . . . . . . . . . . . . 135 50 Maximum Junction Temperature (Hermetic Packages) . . . . . 175oC Maximum Junction Temperature (Plastic Packages) . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC Operating Conditions Temperature Range HA-2544C-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC HA-2544-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC 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. To achieve optimum AC performance, the input stage was designed without protective diode clamps. Exceeding the maximum differential input voltage results in reverse breakdown of the base-emitter junction of the input transistors and probable degradation of the input parameters especially VOS, IOS and Noise. 2. θJA is measured with the component mounted on an evaluation PC board in free air. VSUPPLY = ±15V, CL ≤10pF, RL = 1kΩ, Unless Otherwise Specified Electrical Specifications TEST CONDITIONS HA-2544-2 HA-2544C-5 TEMP (oC) MIN TYP MAX MIN TYP MAX UNITS 25 - 6 15 - 15 25 mV -2, -5 - - 20 - - 40 mV -9 - - 25 - - 40 mV Average Offset Voltage Drift (Note 7) Full - 10 - - 10 - µV/oC Bias Current 25 - 7 15 - 9 18 µA Full - - 20 - - 30 µA Average Bias Current Drift (Note 7) Full - 0.04 - - 0.04 - µA/oC Offset Current 25 - 0.2 2 - 0.8 2 µA Full - - 3 - - 3 µA Offset Current Drift Full - 10 - - 10 - nA/oC Common Mode Range Full ±10 ±11.5 - ±10 ±11.5 - V Differential Input Resistance 25 50 90 - 50 90 - kΩ Differential Input Capacitance 25 - 3 - - 3 - pF PARAMETER INPUT CHARACTERISTICS Offset Voltage Input Noise Voltage f = 1kHz 25 - 20 - - 20 - nV/√Hz Input Noise Current f = 1kHz 25 - 2.4 - - 2.4 - pA/√Hz Input Noise Voltage (Note 7) 0.1Hz to 10Hz 25 - 1.5 - - 1.5 - µVP-P 0.1Hz to 1MHz 25 - 4.6 - - 4.6 - µVRMS VO = ±5V 25 3.5 6 - 3 6 - kV/V Full 2.5 - - 2 - - kV/V -2, -5 75 89 - 70 89 - dB -9 75 89 - 65 89 - dB 25 +1 - - +1 - - V/V TRANSFER CHARACTERISTICS Large Signal Voltage Gain (Note 7) Common Mode Rejection Ratio (Note 7) ∆VCM = ±10V Minimum Stable Gain Unity Gain Bandwidth (Note 7) VO = ±100mV 25 - 45 - - 45 - MHz Gain Bandwidth Product (Note 7) VO = ±100mV 25 - 50 - - 50 - MHz 2 HA-2544 VSUPPLY = ±15V, CL ≤10pF, RL = 1kΩ, Unless Otherwise Specified (Continued) Electrical Specifications TEST CONDITIONS HA-2544-2 HA-2544C-5 TEMP (oC) MIN TYP MAX MIN TYP MAX UNITS 25 - 65 - - 65 - Degrees Output Voltage Swing Full Power Bandwidth (Note 6) Full ±10 ±11 - ±10 ±11 - V 25 3.2 4.2 - 3.2 4.2 - MHz Peak Output Current (Note 7) 25 ±25 ±35 - ±25 ±35 - mA Continuous Output Current (Note 7) 25 ±10 - - ±10 - - mA 25 - 20 - - 20 - Ω Rise Time (Note 4) 25 - 7 - - 7 - ns Overshoot (Note 4) 25 - 10 - - 10 - % Slew Rate 25 100 150 - 100 150 - V/µs Settling Time (Note 5) 25 - 120 - - 120 - ns Differential Phase (Note 9) 25 - 0.03 - - 0.03 - Degree Differential Gain (Notes 3, 9) 25 - 0.0026 - - 0.0026 - dB 25 - 0.03 - - 0.03 - % 5MHz 25 - 0.10 - - 0.10 - dB 10MHz 25 - 0.12 - - 0.12 - dB Chrominance to Luminance Gain (Note 10) 25 - 0.1 - - 0.1 - dB Chrominance to Luminance Delay (Note 10) 25 - 7 - - 7 - ns Full - 10 12 - 10 15 mA -2, -5 70 80 - 70 80 - dB -9 65 80 - 65 80 - dB PARAMETER Phase Margin OUTPUT CHARACTERISTICS Output Resistance Open Loop TRANSIENT RESPONSE VIDEO PARAMETERS RL = 1kΩ (Note 8) Gain Flatness POWER SUPPLY CHARACTERISTICS Supply Current Power Supply Rejection Ratio (Note 7) VS = ±10V to ±20V NOTES: 3. A D (%) = 10 A D ( dB ) --------------------20 – 1 × 100. 4. For Rise Time and Overshoot testing, VOUT is measured from 0 to +200mV and 0 to -200mV. 5. Settling Time is specified to 0.1% of final value for a 10V step and AV = -1. Slew Rate 6. Full Power Bandwidth is guaranteed by equation: Full Power Bandwidth = ----------------------------- ( V PEAK = 5V ) . 2π V PEAK 7. Refer to typical performance curve in Data Sheet. 8. The video parameter specifications will degrade as the output load resistance decreases. 9. Tested with a VM700A video tester, using a NTC-7 Composite input signal. For adequate test repeatability, a minimum warm-up of 2 minutes is suggested. AV = +1. 10. C-L Gain and C-L Delay was less than the resolution of the test equipment used which is 0.1dB and 7ns, respectively. 3 HA-2544 Test Circuits and Waveforms NOTES: 11. VS = ±15V. V+ RS VIN 12. AV = +1. + VOUT CL RL 13. RS = 50Ω or 75Ω (Optional). 14. RL = 1kΩ. 15. CL < 10pF. 16. VIN for Large Signal = ±5V. 17. VIN for Small Signal = 0 to +200mV and 0 to -200mV. V- FIGURE 1. TRANSIENT RESPONSE VIN VIN VOUT VOUT VOUT = 0 to +10V Vertical Scale: VIN = 5V/Div.; VOUT = 2V/Div. Horizontal Scale: 100ns/Div. VOUT = 0 to +200mV Vertical Scale: VIN = 100mV/Div.; VOUT = 100mV/Div. Horizontal Scale: 100ns/Div. LARGE SIGNAL RESPONSE SMALL SIGNAL RESPONSE SETTLING POINT 5kΩ BAL -IN 5kΩ +IN 2kΩ 2kΩ VIN V- + RT 1 2 3 4 + 8 NC 7 V+ 6 OUT 5 BAL VOUT NOTES: 18. AV = -1. 19. Feedback and summing resistor ratios should be 0.1% matched. 20. HP5082-2810 clipping diodes recommended. 21. Tektronix P6201 FET probe used at settling point. FIGURE 2. SETTLING TIME TEST CIRCUIT 4 NOTE: Tested offset adjustment range is |VOS + 1mV| minimum referred to output. Typical range for RT = 20kΩ is approximately ±30mV. FIGURE 3. OFFSET VOLTAGE ADJUSTMENT HA-2544 Schematic Diagram V+ R1 R2 R4 QP24 QP6 QP57 R2A QP58 QP23 V- QN22 R8 R7 QN36 QP20 QN21 R28 QP5 C1 R9 QN50 QP19 R37 V- R36 QP32 QN51 QP33 QN1 D34 QN2 R24 200Ω D37 QN53 -INPUT +INPUT R30 R35 OUTPUT R33 36Ω R25 200Ω QP44 QN43 R32 36Ω QP52 QP54 D38 D39 R10 D40 D41 V+ QN18 R11 R12 QP16 QN17 QN59 QN9 QN10 QN46 R13 QP15 R14 V+ QN14 QN13 R15 R16 QN55 QN60 QN11 QN12 5kΩ R38 5kΩ R39 R17 R18 BAL BAL QN48 R31 V- Application Information The HA-2544 is a true differential op amp that is as versatile as any op amp but offers the advantages of high unity gain bandwidth, high speed and low supply current. More important than its general purpose applications is that the HA-2544 was especially designed to meet the requirements found in a video amplifier system. These requirements include fine picture resolution and accurate color rendition, and must meet broadcast quality standards. In a video signal, the video information is carried in the amplitude and phase as well as in the DC level. The amplifier must pass the 30Hz line rate Iuminance level and the 3.58MHz 5 (NTSC) or 4.43MHz (PAL) color band without altering phase or gain. The HA-2544’s key specifications aimed at meeting this include high bandwidth (50MHz), very low gain flatness (0.12dB at 10MHz), near unmeasurable differential gain and differential phase (0.03% and 0.03 degrees), and low noise (20nV/√Hz). The HA-2544 meets these guidelines. The HA-2544 also offers the advantage of a full output voltage swing of ±10V into a 1kΩ load. This equates to a full power bandwidth of 2.4MHz for this ±10V signal. If video signal levels of ±2V maximum is used (with RL = 1kΩ), the full power bandwidth would be 11.9MHz without clipping distortion. HA-2544 Another usage might be required for a direct 50Ω or 75Ω load where the HA-2544 will still swing this ±2V signal as shown in the above display. One important note that must be realized is that as load resistance decreases the video parameters are also degraded. For optimal video performance a 1kΩ load is recommended. If lower supply voltages are required, such as ±5V, many of the characterization curves indicate where the parameters vary. As shown the bandwidth, slew rate and supply current are still very well maintained. Prototyping and PC Board Layout When designing with the HA-2544 video op amp as with any high performance device, care should be taken to use high frequency layout techniques to avoid unwanted parasitic effects. Short lead lengths, low source impedance and lower value feedback resistors help reduce unwanted poles or zeros. This layout would also include ground plane construction and power supply decoupling as close to the supply pins with suggested parallel capacitors of 0.1µF and 0.001µF ceramic to ground. In the noninverting configuration, the amplifier is sensitive to stray capacitance (<40pF) to ground at the inverting input. Therefore, the inverting node connections should be kept to a minimum. Phase shift will also be introduced as load parasitic capacitance is increased. A small series resistor (20Ω to 100Ω) before the capacitance effectively decouples this effect. Stability/Phase Margin/Compensation The HA-2544 has not sacrificed unity gain stability in achieving its superb AC performance. For this device, the phase margin exceeds 60 degrees at the unity crossing point of the open loop frequency response. Large phase margin is critical in order to reduce the differential phase and differential gain errors caused by most other op amps. Because this part is unity gain stable, no compensation pin is brought out. If compensation is desired to reduce the noise bandwidth, most standard methods may be used. One method suggested for an inverting scheme would be a series R-C from the inverting node to ground which will reduce bandwidth, but not effect slew rate. If the user wishes to achieve even higher bandwidth (>50MHz), and can tolerate some slight gain peaking and lower phase margin, experimenting with various load capacitance can be done. Shown in Application 1 is an excellent Differential Input, Unity Gain Buffer which also will terminate a cable to 75Ω and reject common mode voltages. Application 2 is a method of separating a video signal up into the Sync only signal and the Video and Blanking signal. Application 3 shows the HA-2544 being used as a 100kHz High Pass 2-Pole Butterworth Filter. Also shown is the measured frequency response curves. Typical Applications 1K SYNC ONLY 1.21K SHIELDED CABLE 1.21K 100 COMPOSITE VIDEO + 1.21K 1N5711 1K HA-2544 + HA-2544 1N5711 1K 1.21K VIDEO AND BLANK FIGURE 4. APPLICATION 1, 75Ω DIFFERENTIAL INPUT BUFFER FIGURE 5. APPLICATION 2, COMPOSITE VIDEO SYNC SEPARATOR 2.1K 750pF -20 f0 = 105.3kHz -40 -60 -80 180 -100 750pF 135 - INPUT OUTPUT + 2.1K 90 45 HA-2544 0 fO = 1 2π (2.1K x 750pF) FIGURE 6. APPLICATION 3, 100kHz HIGH PASS 2-POLE BUTTERWORTH FILTER 6 10 100 1K 10K 100K FREQUENCY (Hz) 1M -45 10M FIGURE 7. MEASURED FREQUENCY RESPONSE OF APPLICATION 3 PHASE (DEGREES) ATTENUATION (dB) 0 HA-2544 Typical Performance Curves 1000 INPUT NOISE VOLTAGE 10 10 INPUT NOISE CURRENT 1 10 1 100 1K 2 OFFSET VOLTAGE (mV) 100 3 INPUT NOISE CURRENT (pA/√Hz) 100 0 -1 -2 -3 -4 -5 -6 -60 1 100K 10K 1 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (oC) FREQUENCY (Hz) FIGURE 8. INPUT NOISE VOLTAGE AND NOISE CURRENT vs FREQUENCY FIGURE 9. INPUT OFFSET VOLTAGE vs TEMPERATURE (3 TYPICAL UNITS) 15 14 RL = 1kΩ, VS = ±15V BIAS CURRENT (µA) 13 12 11 10 9 8 7 6 5 4 -60 -40 -20 0 FIGURE 10. NOISE VOLTAGE (AV = 1000) 90 9 RL = 1kΩ, VS = ±15V 88 CMRR 86 84 -PSRR 82 +PSRR 80 40 60 80 100 120 140 FIGURE 11. INPUT BIAS CURRENT vs TEMPERATURE OPEN LOOP GAIN (kV/V) 92 20 TEMPERATURE (oC) 0.1Hz to 10Hz, Noise Voltage = 0.97µVP-P PSRR AND CMRR (dB) INPUT NOISE VOLTAGE (nV/√Hz) 1000 78 RL = 1kΩ, VS = ±15V -AVOL 8 7 +AVOL 6 5 4 76 74 -60 3 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (oC) FIGURE 12. PSRR AND CMRR vs TEMPERATURE 7 140 -60 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (oC) FIGURE 13. OPEN LOOP GAIN vs TEMPERATURE HA-2544 (Continued) 12 80 8 6 GAIN (dB) OUTPUT VOLTAGE SWING (V) 10 +VOUT 4 2 -55oC 0 25oC 125oC 60 40 20 0 RL = 1kΩ , VS = ±15V OPEN LOOP AV = 100 AV = 10 AV = -1 -2 180 -4 135 OPEN LOOP -6 -VOUT -8 90 AV = 100 -10 AV = 10 -12 5 7 9 11 13 15 100 1K SUPPLY VOLTAGE (±V) FIGURE 14. OUTPUT VOLTAGE SWING vs SUPPLY VOLTAGE 45 AV = -1 10K 100K 1M FREQUENCY (Hz) 10M 0 100M PHASE MARGIN (DEGREES) Typical Performance Curves FIGURE 15. FREQUENCY RESPONSE AT VARIOUS GAINS 40 80 ±15V 30 60 ±8V GAIN (dB) 20 10 25oC 20 0 125oC 0 -10 ±15V -20 -45 -90 -30 -40 VOUT = ±100mV ±8V ±5V -135 -50 5 7 9 11 SUPPLY VOLTAGE (±V) 13 15 100 FIGURE 16. OUTPUT CURRENT vs SUPPLY VOLTAGE 10K 100K 1M FREQUENCY (Hz) 10M -180 100M FIGURE 17. OPEN LOOP RESPONSE 1.1 AV = +1, VOUT = ±100mV RL = 1kΩ , CL = ≤ 10pF 1.0 0.9 6 0.8 3 0.7 GAIN (dB) NORMALIZED SUPPLY CURRENT 1K PHASE (DEGREES) -55oC 0 ±5V 40 125oC 0.6 25oC 0.5 -55oC 0 -3 -6 0 -45 0.4 = ±15V 0.3 = ±8V -90 = ±5V -135 0.2 0.1 5 7 9 11 SUPPLY VOLTAGE (±V) 13 FIGURE 18. SUPPLY CURRENT vs SUPPLY VOLTAGE (NORMALIZED TO VS = ±15V AT 25oC) 8 15 100 1K 10K 100K 1M FREQUENCY (Hz) 10M -180 100M FIGURE 19. VOLTAGE FOLLOWER RESPONSE PHASE (DEGREES) OUTPUT CURRENT (mA) 50 HA-2544 Typical Video Performance Curves 0.200 DIFFERENTIAL PHASE (DEGREES) 0.004 DIFFERENTIAL GAIN (dB) 0.003 0.002 0.001 0 f = 3.58MHz AND 5.00MHz -0.001 -0.002 -0.003 -0.004 -0.005 0.150 0.100 SYSTEM ALONE 0.050 0 -0.050 -0.100 f = 3.58MHz -0.150 f = 5.00MHz -0.200 -0.250 -0.300 -0.006 0 1 2 3 DC VOLTAGE LEVEL 4 0 5 1 2 3 DC VOLTAGE LEVEL 4 FIGURE 20. AC GAIN VARIATION vs DC OFFSET LEVELS (DIFFERENTIAL GAIN) FIGURE 21. AC PHASE VARIATION vs DC OFFSET LEVELS (DIFFERENTIAL PHASE) NTSC Method, RL = 1kΩ, Differential Gain <0.05% at TA = 75oC No Visual Difference at TA = -55oC or 125oC NTSC Method, RL = 1kΩ, Differential Phase < 0.05 Degree at TA = 75oC No Visual Difference at TA = -55oC or 125oC FIGURE 22. DIFFERENTIAL GAIN FIGURE 23. DIFFERENTIAL PHASE INPUT AV = +1, VIN = ±100mV RL = 1kΩ, CL < 10pF GAIN FLATNESS (dB) 0.15 0.10 0.05 OUTPUT 0 -0.05 -0.10 -0.15 -0.20 100 1K 10K 100K 1M FREQUENCY (Hz) FIGURE 24. GAIN FLATNESS 9 10M 100M NTSC Method, RL = 1kΩ, C-L Delay <7ns at TA = 75oC No Visual Difference at TA = -55oC or 125oC Vertical Scale: Input = 100mV/Div., Output = 50mV/Div. Horizontal Scale: 500ns/Div. FIGURE 25. CHROMINANCE TO LUMINANCE DELAY 5 HA-2544 (Continued) CL (pF) 9 VOLTAGE GAIN (dB) VOUT 3 0.00000ns 35.5 40.8 50.1 55.8 54.8 -77.1o -89.6o -122.0o -150.7o -179.1o AV = +1, VS = ±15V RL = 1kΩ 0 -3 0 -6 -9 45 + VIN -12 -250.000ns PHASE (-3dB) 0 10 20 30 40 6 VIN BANDWIDTH (-3dB) 50 VO - 1K CL 135 -15 250.000ns -18 100K VIN = 2.0V/Div., VOUT = 2.0V/Div., Timebase = 50ns FIGURE 26. ±2V OUTPUT SWING (WITH RLOAD = 75Ω, FREQUENCY = 5.00MHz) 1M 10M 180 100M FIGURE 27. BANDWIDTH vs LOAD CAPACITANCE Die Characteristics DIE DIMENSIONS: SUBSTRATE POTENTIAL (POWERED UP): 80 mils x 64 mils x 19 mils 2030µm x 1630µm x 483µm VTRANSISTOR COUNT: METALLIZATION: 44 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-2544 BAL V+ -IN +IN OUT V- BAL 10 90 PHASE SHIFT (DEGREES) Typical Video Performance Curves HA-2544 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 www.intersil.com Sales Office Headquarters NORTH AMERICA Intersil Corporation P. O. Box 883, Mail Stop 53-204 Melbourne, FL 32902 TEL: (321) 724-7000 FAX: (321) 724-7240 11 EUROPE Intersil SA Mercure Center 100, Rue de la Fusee 1130 Brussels, Belgium TEL: (32) 2.724.2111 FAX: (32) 2.724.22.05 ASIA Intersil (Taiwan) Ltd. 7F-6, No. 101 Fu Hsing North Road Taipei, Taiwan Republic of China TEL: (886) 2 2716 9310 FAX: (886) 2 2715 3029