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HA-2544
Data Sheet April 1999 File Number 2900.4
50MHz, Video Operational Amplifier
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. The primary features of the HA-2544 include 50MHz Gain Bandwidth, 150V/s 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.
Features
* Gain Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . 50MHz * High Slew Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . 150V/s * Low Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . 10mA * Differential Gain Error. . . . . . . . . . . . . . . . . . . . . . . 0.03% * Differential Phase Error . . . . . . . . . . . . . . . . 0.03 Degrees * Gain Flatness at 10MHz. . . . . . . . . . . . . . . . . . . . . 0.12dB
Applications
* Video Systems * Video Test Equipment * Radar Displays * Data Acquisition Systems * Imaging Systems * Pulse Amplifiers * Signal Conditioning Circuits
Pinout
HA-2544 (CERDIP) HA-2544C (PDIP) TOP VIEW
BAL -IN +IN
1 2 3 4
8 7 6 5
NC V+ OUT BAL
+
Ordering Information
PART NUMBER (BRAND) HA3-2544C-5 HA7-2544-2 TEMP. RANGE (oC) 0 to 75 -55 to 125 PACKAGE 8 Ld PDIP 8 Ld CERDIP PKG. NO. E8.3 F8.3A
V-
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Copyright (c) Intersil Corporation 1999
HA-2544
Absolute Maximum Ratings
Voltage Between V+ and V- Terminals. . . . . . . . . . . . . . . . . . . . 35V Differential Input Voltage (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . 6V Peak Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA
Thermal Information
Thermal Resistance (Typical, Note 2) JA (oC/W) JC (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. JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
PARAMETER INPUT CHARACTERISTICS Offset Voltage
VSUPPLY = 15V, CL 10pF, RL = 1k, Unless Otherwise Specified TEST CONDITIONS TEMP (oC) HA-2544-2 MIN TYP MAX MIN HA-2544C-5 TYP MAX UNITS
25 -2, -5 -9
10 50 -
6 10 7 0.04 0.2 10 11.5 90 3 20 2.4 1.5 4.6
15 20 25 15 20 2 3 -
10 50 -
15 10 9 0.04 0.8 10 11.5 90 3 20 2.4 1.5 4.6
25 40 40 18 30 2 3 -
mV mV mV V/oC A A A/oC A A nA/oC V k pF nV/Hz pA/Hz VP-P VRMS
Average Offset Voltage Drift (Note 7) Bias Current
Full 25 Full
Average Bias Current Drift (Note 7) Offset Current
Full 25 Full
Offset Current Drift Common Mode Range Differential Input Resistance Differential Input Capacitance Input Noise Voltage Input Noise Current Input Noise Voltage (Note 7) f = 1kHz f = 1kHz 0.1Hz to 10Hz 0.1Hz to 1MHz TRANSFER CHARACTERISTICS Large Signal Voltage Gain (Note 7) VO = 5V
Full Full 25 25 25 25 25 25
25 Full
3.5 2.5 75 75 +1 -
6 89 89 45 50
-
3 2 70 65 +1 -
6 89 89 45 50
-
kV/V kV/V dB dB V/V MHz MHz
Common Mode Rejection Ratio (Note 7)
VCM = 10V
-2, -5 -9
Minimum Stable Gain Unity Gain Bandwidth (Note 7) Gain Bandwidth Product (Note 7) VO = 100mV VO = 100mV
25 25 25
2
HA-2544
Electrical Specifications
PARAMETER Phase Margin OUTPUT CHARACTERISTICS Output Voltage Swing Full Power Bandwidth (Note 6) Peak Output Current (Note 7) Continuous Output Current (Note 7) Output Resistance TRANSIENT RESPONSE Rise Time (Note 4) Overshoot (Note 4) Slew Rate Settling Time (Note 5) VIDEO PARAMETERS RL = 1k (Note 8) Differential Phase (Note 9) Differential Gain (Notes 3, 9) 25 25 25 Gain Flatness 5MHz 10MHz Chrominance to Luminance Gain (Note 10) Chrominance to Luminance Delay (Note 10) POWER SUPPLY CHARACTERISTICS Supply Current Power Supply Rejection Ratio (Note 7) VS = 10V to 20V Full -2, -5 -9 NOTES:
A D ( dB ) -------------------20
VSUPPLY = 15V, CL 10pF, RL = 1k, Unless Otherwise Specified (Continued) TEST CONDITIONS TEMP (oC) 25 HA-2544-2 MIN TYP 65 MAX MIN HA-2544C-5 TYP 65 MAX UNITS Degrees
Full 25 25 25 Open Loop 25
10 3.2 25 10 -
11 4.2 35 20
-
10 3.2 25 10 -
11 4.2 35 20
-
V MHz mA mA
25 25 25 25
100 -
7 10 150 120
-
100 -
7 10 150 120
-
ns % V/s ns
-
0.03 0.0026 0.03 0.10 0.12 0.1 7
-
-
0.03 0.0026 0.03 0.10 0.12 0.1 7
-
Degree dB % dB dB dB ns
25 25 25 25
70 65
10 80 80
12 -
70 65
10 80 80
15 -
mA dB dB
3.
A D (%) = 10
- 1 x 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 ) . 2 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:
V+ RS VIN +
11. VS = 15V. 12. AV = +1. 13. RS = 50 or 75 (Optional). 14. RL = 1k. 15. CL < 10pF. 16. VIN for Large Signal = 5V. 17. VIN for Small Signal = 0 to +200mV and 0 to -200mV. FIGURE 1. TRANSIENT RESPONSE
CL RL
VOUT
V-
VIN
VIN
VOUT VOUT
VOUT = 0 to +10V Vertical Scale: VIN = 5V/Div.; VOUT = 2V/Div. Horizontal Scale: 100ns/Div. LARGE SIGNAL RESPONSE
VOUT = 0 to +200mV Vertical Scale: VIN = 100mV/Div.; VOUT = 100mV/Div. Horizontal Scale: 100ns/Div. SMALL SIGNAL RESPONSE
SETTLING POINT
BAL
1 2 3 4
8 7 6 5
NC V+ OUT
5k
5k 2k
-IN +IN V-
+
2k VIN
+
RT VOUT
BAL
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. NOTE: Tested offset adjustment range is |VOS + 1mV| minimum referred to output. Typical range for RT = 20k is approximately 30mV.
FIGURE 2. SETTLING TIME TEST CIRCUIT
FIGURE 3. OFFSET VOLTAGE ADJUSTMENT
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HA-2544 Schematic Diagram
V+ R1 QP24 R2A QP23 VR7 QP20 QN21 R28 R9 QP19 R36 QP33 D34 D37 QP44 QN43 D38 D39 D40 R10 V+ QN18 R11 QP16 QN17 R13 QP15 R14 V+ QN14 QN13 R15 R16 QN55 QN60 QN11 QN12 QN48 R31 VBAL BAL R12 QN59 QN9 QN10 D41 QP52 R24 200 VQN51 +INPUT QN1 QN2 R25 200 -INPUT R30 R35 QN53 R32 36 OUTPUT R33 36 QP54 QN22 R8 QN36 C1 QN50 QP5 QP57 QP58 R2 R4 QP6
R37 QP32
QN46
5k R38
5k R39
R17
R18
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 1k 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 = 1k), the full power bandwidth would be 11.9MHz without clipping distortion.
HA-2544
Another usage might be required for a direct 50 or 75 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 1k 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. resistor (20 to 100) 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 75 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.
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 0.1F and 0.001F 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
Typical Applications
1K SHIELDED CABLE 100 1.21K 1.21K 1K SYNC ONLY 1N5711
1.21K 1.21K + HA-2544 COMPOSITE VIDEO
+ HA-2544 1K VIDEO AND BLANK 1N5711
FIGURE 4. APPLICATION 1, 75 DIFFERENTIAL INPUT BUFFER
FIGURE 5. APPLICATION 2, COMPOSITE VIDEO SYNC SEPARATOR
0 ATTENUATION (dB) -20 -40 -60 -80 -100 135 PHASE (DEGREES) 180 f0 = 105.3kHz
2.1K 750pF INPUT 2.1K 750pF
+ HA-2544
OUTPUT
90 45 0
fO =
1 2 (2.1K x 750pF) 10 100 1K 10K 100K FREQUENCY (Hz) 1M
-45 10M
FIGURE 6. APPLICATION 3, 100kHz HIGH PASS 2-POLE BUTTERWORTH FILTER
FIGURE 7. MEASURED FREQUENCY RESPONSE OF APPLICATION 3
6
HA-2544 Typical Performance Curves
1000 INPUT NOISE VOLTAGE (nV/Hz) 1000 INPUT NOISE CURRENT (pA/Hz) 3 2 OFFSET VOLTAGE (mV) 1 0 -1 -2 -3 -4 -5 -6 -60 -40 -20 0 20 40 60 80 100 120 140
100 INPUT NOISE VOLTAGE
100
10 INPUT NOISE CURRENT
10
1 1 10 100 1K 10K FREQUENCY (Hz)
1 100K
TEMPERATURE (oC)
FIGURE 8. INPUT NOISE VOLTAGE AND NOISE CURRENT vs FREQUENCY
FIGURE 9. INPUT OFFSET VOLTAGE vs TEMPERATURE (3 TYPICAL UNITS)
15 14 13 BIAS CURRENT (A) 12 11 10 9 8 7 6 5
RL = 1k, VS = 15V
4 -60 0.1Hz to 10Hz, Noise Voltage = 0.97VP-P
-40
-20
0
20
40
60
80
100
120
140
TEMPERATURE (oC)
FIGURE 10. NOISE VOLTAGE (AV = 1000)
FIGURE 11. INPUT BIAS CURRENT vs TEMPERATURE
92 90 PSRR AND CMRR (dB) 88 86 84 82 80 78 76
RL = 1k, VS = 15V CMRR OPEN LOOP GAIN (kV/V)
9 8 7
RL = 1k, VS = 15V -AVOL
+AVOL 6 5 4 3
-PSRR
+PSRR
74 -60
-40
-20
0
20
40
60
80
100
120
140
-60
-40
-20
0
20
40
60
80
100
120 140
TEMPERATURE (oC)
TEMPERATURE (oC)
FIGURE 12. PSRR AND CMRR vs TEMPERATURE
FIGURE 13. OPEN LOOP GAIN vs TEMPERATURE
7
HA-2544 Typical Performance Curves
12 10 OUTPUT VOLTAGE SWING (V) 6 4 2 0 -2 -4 -6 -8 -10 -12 5 7 9 11 13 15 100 1K SUPPLY VOLTAGE (V) -VOUT OPEN LOOP AV = 100 AV = 10 AV = -1 10M 135 90 45 0 100M -55oC 25oC 125oC GAIN (dB) 8 +VOUT 80 60 40 20 0 OPEN LOOP
(Continued)
RL = 1k , VS = 15V
AV = 100 AV = 10 AV = -1 180 PHASE MARGIN (DEGREES) PHASE (DEGREES) PHASE (DEGREES)
10K 100K 1M FREQUENCY (Hz)
FIGURE 14. OUTPUT VOLTAGE SWING vs SUPPLY VOLTAGE
FIGURE 15. FREQUENCY RESPONSE AT VARIOUS GAINS
50 40 OUTPUT CURRENT (mA) 30 20 10 0 -10 -20 -30 -40 -50 5 7 9 11 SUPPLY VOLTAGE (V) 13 15 100 1K 10K 100K 1M FREQUENCY (Hz) 10M VOUT = 100mV 8V 5V 15V -55oC 25oC 125oC GAIN (dB) 80 60 40 20 0 0 -45 -90 -135 -180 100M 15V 8V 5V
FIGURE 16. OUTPUT CURRENT vs SUPPLY VOLTAGE
FIGURE 17. OPEN LOOP RESPONSE
1.1 NORMALIZED SUPPLY CURRENT 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 5 7 9 11 SUPPLY VOLTAGE (V) 13 15 125oC 25oC -55oC GAIN (dB) 6 3 0 -3 -6
AV = +1, VOUT = 100mV RL = 1k , CL = 10pF
0 = 15V = 8V = 5V -45 -90 -135 10M -180 100M
100
1K
10K 100K 1M FREQUENCY (Hz)
FIGURE 18. SUPPLY CURRENT vs SUPPLY VOLTAGE (NORMALIZED TO VS = 15V AT 25oC)
FIGURE 19. VOLTAGE FOLLOWER RESPONSE
8
HA-2544 Typical Video Performance Curves
DIFFERENTIAL PHASE (DEGREES) 0.004 0.003 DIFFERENTIAL GAIN (dB) 0.002 0.001 0 -0.001 -0.002 -0.003 -0.004 -0.005 -0.006 0 1 2 3 DC VOLTAGE LEVEL 4 5 f = 3.58MHz AND 5.00MHz 0.200 0.150 0.100 0.050 0 -0.050 -0.100 -0.150 -0.200 -0.250 -0.300 0 1 2 3 DC VOLTAGE LEVEL 4 5 f = 5.00MHz f = 3.58MHz SYSTEM ALONE
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 = 1k, Differential Gain <0.05% at TA = 75oC No Visual Difference at TA = -55oC or 125oC
NTSC Method, RL = 1k, Differential Phase < 0.05 Degree at TA = 75oC No Visual Difference at TA = -55oC or 125oC FIGURE 23. DIFFERENTIAL PHASE
FIGURE 22. DIFFERENTIAL GAIN
AV = +1, VIN = 100mV RL = 1k, CL < 10pF 0.15 GAIN FLATNESS (dB) 0.10 0.05
INPUT
OUTPUT 0 -0.05 -0.10 -0.15 -0.20 100 1K 10K 100K 1M FREQUENCY (Hz) 10M 100M
NTSC Method, RL = 1k, 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
FIGURE 24. GAIN FLATNESS
9
HA-2544 Typical Video Performance Curves
(Continued)
CL (pF) 0 10 20 30 40 BANDWIDTH (-3dB) 35.5 40.8 50.1 55.8 54.8 PHASE (-3dB) -77.1o -89.6o -122.0o -150.7o -179.1o AV = +1, VS = 15V RL = 1k
9 VIN VOLTAGE GAIN (dB) 6 3 0 -3 -6 -9 -12 -250.000ns 0.00000ns 250.000ns -15 -18 100K
0 VIN 50 + 45 VO 1K CL 90 135 180 100M
VOUT
-
VIN = 2.0V/Div., VOUT = 2.0V/Div., Timebase = 50ns FIGURE 26. 2V OUTPUT SWING (WITH RLOAD = 75, FREQUENCY = 5.00MHz)
1M
10M
FIGURE 27. BANDWIDTH vs LOAD CAPACITANCE
Die Characteristics
DIE DIMENSIONS: 80 mils x 64 mils x 19 mils 2030m x 1630m x 483m METALLIZATION: Type: Al, 1% Cu Thickness: 16kA 2kA PASSIVATION: Type: Nitride (Si3N4) over Silox (SiO2, 5% Phos.) Silox Thickness: 12kA 2kA Nitride Thickness: 3.5kA 1.5kA SUBSTRATE POTENTIAL (POWERED UP): VTRANSISTOR COUNT: 44 PROCESS: Bipolar Dielectric Isolation
Metallization Mask Layout
HA-2544
BAL
V+
-IN
+IN
OUT
V-
BAL
10
PHASE SHIFT (DEGREES)
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 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
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