neceteennntaels 4A 32 2s uy cf HARRIS SEMICONDUCTOR 399-218 HA%2544 Video Operational Amplifier Applications Video Systems * Video Test Equipment * Radar Displays e Data Acquisition Systems Imaging Systems * Pulse Amplifiers * Signal Conditioning Circuits Ordering Information March 1993 Features Description * Gain Bandwidth ............. cece cece nee SOMHzZ The HA-2544 is a fast, unity gain stable, monolithic op amp * High Slew Rate........ 2. eee ee we eeee 150V/us designed to meet the needs required for accurate * Low Supply Current........... cc. cc ecco cee 10mA_ Freproduction of video or high speed signals. It offers high * Differential Gain Error.............cccccecee 0.03% Voltage gain (6kV/V) and high phase margin (65 degrees) while maintaining tight gain flatness over the video * Differential Phase Error................ 0.03 Degree bandwidth. Built from high quality Dielectric Isolation, the Gain Flatness at 1OMHz.................... 0.12dB HA-2544 is another addition to the Harris series of high speed, wideband op amps, and offers true video performance combined with the versatility of an op amp. The primary features of the HA-2544 include 50MHz Gain Bandwidth, 150V/us slew rate, 0.03% differential gain error and gain flatness of just 0.12dB at 10MHz. High perfor- mance and low power requirements are met with a supply current of only 10mA. Uses of the HA-2544 range from video test equipment, PART NUMBER TEMP. RANGE PACKAGE guidance systems, radar displays and other precise imaging HA2-2544-2 55C to +125C | 8 Pin TO-99 Can seve ee stringent gain and Eee regurements have HA22544.5 0C to 475C 8 Pin 10-99 Can previously been met with costly rids and discrete HA32544-6 OCT a 8 Lead Plastic DIP Circuitry. The HA-2544 will also be used in non-video a systems requiring high speed signal conditioning such as HA3-25440-5 OC to +75C 8 Lead Plastic DIP data acquisition systems, medical electronics, specialized HA4P2544-5 0C to +75C 20 Lead PLCC instrumentation and communication systems. 544C- 0, AAP 2 S OC to +75C 20 Lead Puce Military (/883) product and data sheets are available upon HA7-2544-2 -55C to +125C 8 Lead Ceramic DIP request HA7-2544-5 0C to +75C 8 Lead Ceramic DIP HA9P2544-5 0C to +75C 8 Lead SOIC HA9P2544-9 ~40C to +85C 8 Lead SOIC HA9P25440-5 0C to +75C 8 Lead SOIC HA9P2544C-9 ~40C to +85C 8 Lead SOIC Pinouts HA-2544 (PDIP, CDIP, SOIC) HA-2544C (PDIP, SOIC) HA-2544/2544C HA-2544 TOP VIEW (PLCC) (TO-99 CAN) TOP VIEW TOP VIEW VS 3 BAL | 1 8 |NC 2s 282e an [2 >a 7 | vs {3} }2 20} [19] +IN [3 Z 6 | OUT nc la 8] NC Ve 14 5 1 BAL AN [5 V+ nc 16 ite] NC HN [7 | OUT NC [8 14] NC [9 | 14] 13] Oo > Oo a oO z zz 2 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper |.C. Handling Procedures Copyright Harns Corporation 1993 File Number 2900.1 2-348Specifications HA-2544 Absolute Maximum Ratings (Note 1) Voltage Between V+ and V- Terminals ........--+-+ eee 35V Differential Input Voltage (Note 11).......... sees ee eee eens 6V Peak Output Currant ..... 6... eee e ee eee eee eee en nee +40mA Junction Temperature... 0... eee cee eee eee eeee +175C Junction Temperature (Plastic Package) ........-.--+-: +150C Lead Temperature (Soldering 10 Sec.)........--6+eeees +300C Operating Conditions Operating Temperature Range HA-2544/2544C-5 ... ccc eee eee eens 0C s Ty s +75C HA-2544-9 ooo e cece cece cece e tence eee ~40C < Ty $ +85C HA-2544-2 2. ccc cece cece e eter eece -55C < Ty S$ +125C Storage Temperature Range...........---- -65C Ta, S$ +150C CAUTION: Stresses above those listed in Absolute Maamum 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. Electrical Specifications Vs =+15V, C, < 10pF, R, = 1kQ, Unless Otherwise Specified HA-2544-2/-5 HA-2544C-5 PARAMETER temp | MIN | TYP | MAX | MIN | TyP_| MAX | UNITS INPUT CHARACTERISTICS Offset Voltage 425C 6 15 - 15 25 mV -2,-5 - 20 - - 40 mV 9 - 25 - - 40 mV Average Offset Voltage Drift (Note 9) Full 10 - - 10 - VPC Bias Current +25C 7 15 - 9 18 pA Full - 20 - - 30 pA Average Bias Current Drift (Note 9) Full 0.04 - - 0.04 - parc Offset Current +25C 0.2 2 - 0.8 2 pA Full - 3 - - 3 pA Offset Current Drift Full 10 - - 10 - nALC Common Mode Range Full +10 +11.5 - +10 11.5 - Vv Differential Input Resistance +25C 90 - 50 90 - kQ Differential Input Capacitance +25C 3 - - 3 - pF input Noise Voltage (f = 1kHz) +25C 20 - - 20 - nVAHz Input Noise Current (f = 1kHz) +25C 2.4 - - 2.4 - pANHz Input Noise Voltage 0.1Hz to 10Hz (Note 9) 425C 1.5 - - 1.5 - LVp.p 0.1Hz to 1MHz +25C 4.6 - - 4.6 - pVRMS TRANSFER CHARACTERISTICS Large Signal Voltage Gain (Notes 4, 9) +25C 3.5 6 - 6 - KV/V Full 2.5 - - - - kV/V Common Mode Rejection Ratio (Notes 6, 9) -2,-5 89 - 70 89 - dB -9 89 - 65 89 - dB Minimum Stabie Gain +25C - - +1 - - VN Unity Gain Bandwidth (Notes 3, 9) +25C 45 - - 45 - MHz Gain Bandwidth Product (Notes 3, 9) +25C 50 - - 50 - MHz Phase Margin +25C 65 - - 65 - Degrees OUTPUT CHARACTERISTICS Output Voitage Swing Full +10 +11 - +10 +11 - Vv Full Power Bandwidth (Note 7) +25C 3.2 42 - 3.2 42 - MHz Peak Output Current (Note 9) +25C +25 135 - +25 +35 - mA Continuous Output Current (Note 9) +25C +10 - - +10 - : mA Output Resistance (Open Loop) 425C 20 - - 20 - 2-349Specifications HA-2544 Electrical Specifications Vs = +15V, C, < 10pF, A, = 1kQ, Unless Otherwise Specified (Continued) HA-2544-2/-5 HA-2544C-5 PARAMETER Temp | MIN | Typ {| MAX | MIN | Typ [| MAX | UNITS TRANSIENT RESPONSE - Rise Time (Note 3) +25C - 7 - - 7 - ns Overshoot (Note 3) +25C - 10 - - 10 - % Slew Rate +25C 100 150 - 100 150 - Vius Settling Time (Note 5) +25C - 120 - - 120 - ns VIDEO PARAMETERS RF, = 1kQ (Note 10) Differential Phase (Note 12) +25C - 0.03 - - 0.03 - Degree Differential Gain (Notes 2, 12) +25C - 0.0026 - - 0.0026 - dB +25C - 0.03 - . 0.03 - % Gain Flatness 5MHz +25C - 0.10 - - 0.10 - dB 10MHz 425C - 0.12 - - 0.12 - dB Chrominance to Luminance Gain (Note 13) +25C - 0.1 - - 0.1 - dB Chrominance to Luminance Delay (Note 13) +25C - 7 - - 7 - ns POWER SUPPLY CHARACTERISTICS Supply Current Full - 10 12 - 10 15 mA Power Supply Rejection Ratio (Notes 8, 9) -2,-5 70 80 - 70 80 - dB 9 65 80 - 65 80 - dB NOTES: 1. hy COON OD OH PF OW 12. 13. Absolute maximum ratings are limiting values, applied individually beyond which the serviceability of the circuit may be impaired. Func- tional operability under any of these conditions is not necessarily implied. Ap (dB) An(%) = | 10 22 4] x 1400. - Vour = 100mV. For Rise Time and Overshoot testing, Vout is measured from 0 to +200mV and 0 to -200mvV. = Vout = +5V . Settling Time is specified to 0.1% of final value for a 10V step and Ay = -1. AVoy = 10V om = 10 . Slew Rate . Full Power Bandwidth is guaranteed by equation: Full Power Bandwidth = ox Venny (Vp EAK 5V ). . AVg = #10 to 20V * "PEAK . Refer to typical performance curve in Data Sheet. 10. 11, The video parameter specifications will degrade as the output load resistance decreases. 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, Igog and Noise. 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. Ay = +1. C-L Gain and C-L Delay was less than the resolution of the test equipment used which is 0.1dB and 7ns, respectively. 2-350HA-2544 Schematic * + 2 V+ < Ri R2> R4 e ap244} F.OP6 Ranz crept Korse oe Vk an2z = R7 Re QN36 ap204}+4 iS Kaps QN21 Ro L C1 > R28 aP19 +INPUT 4NPUT QN1 QN2 R24 R25 2000 2002 QP44 V+ ovis $A 6 apis 4+ i QN59 Qng K N10 Konss QN17 R13 QP15 Sri4 V+ tia J ents _Janss anso _ Joni jC ONIZ Hig Ris SAIS OQ SHO See Ris R31 4 4 ~~ BAL BAL Die Characteristics Transistor Count ......2.. 2. cece eee creer eteeeee 44 Thermal Constants C/W) 85a Bjc Die Dimensions ...........-0 2 eee eee 80 x 65 x 19 mils Metal Can ........ccecceecceees 111 34 Substrate Potential*... 0.00.06 eee eee eee eens V- Plastic Min-DIP.............-005 92 30 ProceSS ....... cece e eee eees High Frequency Bipolar D.1. Ceramic Mini-DIP ...........---- 114 35 Passivation .......-0-. ccc cece cree ee nee nenee Nitride SOIC... occ ccc ce cee cece tees 157 43 PLCC... ccc cee cee eee nes 74 33 * The substrate may be left fioating (Insulating Die Mount) or it may be mounted on a conductor at V- potential. 2-351HA-2544 Test Circuits +Vs Vg = +15V Rs Ay =+1 Vin Rg = 5022 or 752 (Optional) Vout Ry = 1kQ C, < 10pF CL SAL L Vin for Large Signal = +5V > = Vin for Small Signal = 0 to +200mV Ve and 0 to -200mV FIGURE 1. TRANSIENT RESPONSE LARGE SIGNAL RESPONSE SMALL SIGNAL RESPONSE Vout =0to+10V Vour = 0 to +200mV Vertical Scale: (Vjy = 5V/Div.; Voyz = 2V/Div.) Vertical Scala: (Vy = 100MV/Div.; Voyz = 100mV/Div.) Horizontal Scale: (100ns/Div.) Horizontal Scale: (100ns/Div.). Vour fae SETTLING POINT aw, 5kQ 5kQ ; v Wy Ne w~t - 7 V+ v 2kQ \ s 6 | OUT " . - Vout + 5 7 om * Ay =-1 * Feedback and summing resistor ratios should be 0.1% matched. HP5082-2810 clipping diodes recommended. * Tektronix P6201 FET probe used at Settling point. Tested offset adjustment range is !Vog + imVI minimum referred to output. Typical range for Ry = 20kQ is approximately t30mvV. FIGURE 2. SETTLING TIME TEST CIRCUIT FIGURE 3. OFFSET VOLTAGE ADJUSTMENT 2-352HA-2544 Typical Performance Curves 1000 1000 100 100 INPUT NOISE VOLTAGE 10 10 INPUT NOISE CURRENT INPUT NOISE VOLTAGE (nV/VHiz) INPUT NOISE CURRENT (pA/VHz) 1 10 100 1K 100K FREQUENCY (Hz) FIGURE 4. INPUT NOISE VOLTAGE AND NOISE CURRENT vs FREQUENCY 10K 0.1 Hz to 10Hz, Noise Voltage = 0.971Vp.p FIGURE 6. NOISE VOLTAGE (Ay = 1000) 92 90 RL = 1kQ, Vg = +15V 88 86 a4 82 80 PSRR AND CMRR (dB) 78 76 74 60 40 -20 0 20 40 60 80 TEMPERATURE (C) FIGURE 8. PSRR AND CMRR vs TEMPERATURE 100 120 140 OFFSET VOLTAGE (mV) #0 40 -20 0 20 40 60 980 100 120 140 TEMPERATURE (C) FIGURE 5. INPUT OFFSET VOLTAGE vs TEMPERATURE (3 TYPICAL UNITS) 15 14 13 Ry = 1kQ, Vg =+15V qv - 11 a Ww 10 aa) o 8 < a 7 6 5 4 60 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (C) FIGURE 7. INPUT BIAS CURRENT vs TEMPERATURE 9 Ry = 1kQ, Vg = s15V | | S 8 Avow LS = g pee TT > 7 a +t =z ] +AyoL G 7 o 6 A ra S iY a a 5 A A) a 1 o ye A oa 3 60 40 -20 O 20 40 60 80 100 120 140 TEMPERATURE (C) FIGURE 9. OPEN LOOP GAIN vs TEMPERATURE 2-353HA-2544 Typical Performance Curves (Continued) 12 = a = 8 g 6 = 4 a w 2 Z 9 5 9 -2 - 4 = a + aa) 10 -12 5 7 9 1 13 15 SUPPLY VOLTAGE (+V) FIGURE 10. OUTPUT VOLTAGE SWING vs SUPPLY VOLTAGE (OVER FULL TEMPERATURE) 5C +25C +125C OUTPUT CURRENT (mA) 5 7 9 W 13 15 SUPPLY VOLTAGE (+V) FIGURE 12. OUTPUT CURRENT vs SUPPLY VOLTAGE (OVER FULL TEMPERATURE) 141 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 02 0.1 NORMALIZED SUPPLY CURRENT 5 7 9 1 13 15 SUPPLY VOLTAGE (+V) FIGURE 14. SUPPLY CURRENT vs SUPPLY VOLTAGE (NORMALIZED AT Vg, = +15V AT +25C) Ry = 1kQ, Vg = +15V ey = z < o 180 135 ' = 100 90 t Ay = 10 =+4 45 0 100 1K 10K =6100K = 1M 10M 100M FREQUENCY (Hz) FIGURE 11. FREQUENCY RESPONSE AT VARIOUS GAINS GAIN (dB) eo 8B 8 S28 a t15V +8V +5V 10K 100K 1M FREQUENCY (Hz) FIGURE 13. OPEN LOOP RESPONSE Vout zit0OmV 100 1K 10M Ay = +1, Your = +1 0OmvV Ry = 1kQ, CL 2s 10pF GAIN (dB) bh b&b w Oo wees = $15 voww. =tBV essen = t5V 0 45 00 135 -180 100 1K 10K 100K 1M 100M FREQUENCY (Hz) 10M FIGURE 15. VOLTAGE FOLLOWER RESPONSE PHASE MARGIN (DEGREES) PHASE (DEGREES) PHASE (DEGREES) 2-354HA-2544 Typical Video Performance Curves 0.004 0.003 0.002 0.001 0 -0.001 ~0.002 -0.003 0.004 -0.005 0.006 0 f = 3.58MHz AND 5.00MHz DIFFERENTIAL GAIN (dB) 1 2 3 4 5 DC VOLTAGE LEVEL FIGURE 16. AC GAIN VARIATION vs DC OFFSET LEVELS (DIFFERENTIAL GAIN) NTSC Method, R, = 1kQ, Differential Gain < 0.05% at Ty = +75C No Visual Difference at Ta = -55C or +125C FIGURE 18. DIFFERENTIAL GAIN Ay = +1, Vin = t100mV Ry = 1kQ, Cy < 10pF 0.15 0.10 0.05 0.05 0.10 GAIN FLATNESS (dB) o FREQUENCY (Hz) FIGURE 20. GAIN FLATNESS 100 1K 10K 100K 1M 10M 100M 0.200 0.150 0.100 SYSTEM 0.050 ALONE 0.050 -0.100 {= 3.58MHz 0.150 0.200 -0.250 0.300 f = 5.00MHz DIFFERENTIAL PHASE (DEGREES) 0 1 2 3 4 5 DC VOLTAGE LEVEL FIGURE 17. AC PHASE VARIATION vs DC OFFSET LEVELS (DIFFERENTIAL PHASE) NTSC Method, R, = 1k, Differential Phase < 0.05 Degree at T, = +75C No Visual Difference at Ta = -55C or +125C FIGURE 19. DIFFERENTIAL PHASE INPUT OUTPUT NTSC Method, R, = 1kQ, C-L Delay < 7ns at Ts = +75C No Visual Difference at T, = -55C or +125C Vertical Scale: Input = 100mV/Div., Output = 50mvV/Div. Horizontal Scale: 500ns/Div. FIGURE 21.CHROMINANCE TO LUMINANCE DELAYHA-2544 Typical Video Performance Curves (Continued) Vin Vout -250.000ns 0.00000ns 250.000ns Vin = 2.0V/Div., Voy = 2.0V/Div., Timebase = 50ns FIGURE 22. +2V OUTPUT SWING (WITH Ri oan = 75Q, FREQUENCY = 5.00MHz) 13 BANDWIDTH | PHASE] || Ay =+1, Vg =+15V 9 3d Ru = 1kQ 35.5 -77.1 6 40.8 -89.6 _ 50.1 -122.0 m 3 55.8 -150.7 z : Zo < a G 5 Y ul Ww go x 4 0 a Qa QS -+ so 12 Yo 9 = 1K == Cc o iw t = = -18 1890 @ 100K 1M 10M 100M FIGURE 23. BANDWIDTH vs LOAD CAPACITANCE Applications and Product Guidelines 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 impor- tant 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 luminance level and the 3.58MHz (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 (0.038% and 0.03 degrees), and low noise (20nV/VHz). The HA-2544 meets these quidelines. The HA-2544 also offers the advantage of a full output voltage swing of 10V into a 1kQ 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 R, = 1kQ), the full power bandwidth would be 11.9MHz without clipping distortion. Another usage might be required for a direct 50Q or 75Q 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 1 kQ 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 fre- quency 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 0.1,.F and 0.001,)F 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 (20Q to 1002) 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, experiment- ing 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 75Q and reject common mode voltages. Application 2 is a method of separat- ing 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.HA-2544 Typical Applications SHIELDED CABLE FIGURE 24. APPLICATION 1, 75Q DIFFERENTIAL INPUT BUFFER 21K 750pF TS50pF INPUT o| }+_J 2.1K P? OUTPUT HA-2544 tos ____ 2m (2.1K 750pF) FIGURE 26. APPLICATION 3, 100kHz HIGH PASS 2-POLE BUTTERWORTH FILTER 1K SYNC ONLY COMPOSITE VIDEO VIDEO AND BLANK FIGURE 25. APPLICATION 2, COMPOSITE VIDEO SYNC. SEPARATOR a = -20 z S -40 fo = 105.3kHz 3 60 z E -80 < +130 -100 a +135 +90 Fi +45 ws 0 < = 45 a 10 100 1K 10K 100K 1M 10M FREQUENCY (Hz) FIGURE 27. MEASURED FREQUENCY RESPONSE OF APPLICATION 3 2-357