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Data Sheet
HA-2544
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/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
TEMP.
(BRAND)
RANGE (oC)
PACKAGE
HA3-2544C-5
HA7-2544-2
0 to 75 8 Ld PDIP
-55 to 125 8 Ld CERDIP
PKG.
NO.
E8.3
F8.3A
Features
• Gain Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . 50MHz
• 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
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999

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HA-2544
Absolute Maximum Ratings
Voltage Between V+ and V- Terminals. . . . . . . . . . . . . . . . . . . . 35V
Differential Input Voltage (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . 6V
Peak Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±40mA
Operating Conditions
Temperature Range
HA-2544C-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC
HA-2544-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC
Thermal Information
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
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.
Electrical Specifications
PARAMETER
VSUPPLY = ±15V, CL 10pF, RL = 1k, Unless Otherwise Specified
TEST
CONDITIONS
TEMP
(oC)
HA-2544-2
MIN TYP MAX
INPUT CHARACTERISTICS
Offset Voltage
25 - 6 15
-2, -5
-
- 20
-9 - - 25
Average Offset Voltage Drift (Note 7)
Full - 10 -
Bias Current
25 - 7 15
Full -
- 20
Average Bias Current Drift (Note 7)
Full - 0.04 -
Offset Current
25 - 0.2 2
Full -
-3
Offset Current Drift
Full - 10 -
Common Mode Range
Full ±10 ±11.5 -
Differential Input Resistance
25 50 90 -
Differential Input Capacitance
25 - 3 -
Input Noise Voltage
f = 1kHz
25 - 20 -
Input Noise Current
f = 1kHz
25 - 2.4 -
Input Noise Voltage (Note 7)
0.1Hz to 10Hz
25 - 1.5 -
0.1Hz to 1MHz
25 - 4.6 -
TRANSFER CHARACTERISTICS
Large Signal Voltage Gain (Note 7)
VO = ±5V
25 3.5 6
Full 2.5
-
-
-
Common Mode Rejection Ratio (Note 7)
VCM = ±10V
-2, -5
-9
75
75
89
89
-
-
Minimum Stable Gain
25 +1 -
-
Unity Gain Bandwidth (Note 7)
Gain Bandwidth Product (Note 7)
VO = ±100mV
VO = ±100mV
25 - 45 -
25 - 50 -
HA-2544C-5
MIN TYP MAX
UNITS
- 15 25 mV
- - 40 mV
- - 40 mV
- 10 - µV/oC
-
9 18
µA
- - 30 µA
- 0.04 - µA/oC
- 0.8 2
µA
- - 3 µA
- 10 - nA/oC
±10 ±11.5
-
V
50 90
-
k
- 3 - pF
- 20 - nV/Hz
- 2.4 - pA/Hz
- 1.5 - µVP-P
- 4.6 - µVRMS
3 6 - kV/V
2 - - kV/V
70 89
-
dB
65 89
-
dB
+1 - - V/V
- 45 - MHz
- 50 - MHz
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HA-2544
Electrical Specifications VSUPPLY = ±15V, CL 10pF, RL = 1k, Unless Otherwise Specified (Continued)
PARAMETER
TEST
CONDITIONS
TEMP
(oC)
HA-2544-2
MIN TYP MAX
HA-2544C-5
MIN TYP MAX
UNITS
Phase Margin
25 - 65 - - 65 - Degrees
OUTPUT CHARACTERISTICS
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
Output Resistance
Open Loop
25
- 20
-
- 20 -
TRANSIENT RESPONSE
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
VIDEO PARAMETERS RL = 1k(Note 8)
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 -
%
Gain Flatness
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
POWER SUPPLY CHARACTERISTICS
Supply Current
Full
-
10 12
-
10 15 mA
Power Supply Rejection Ratio (Note 7)
VS = ±10V to ±20V -2, -5
70
80
-
70 80
-
-9 65 80 - 65 80 -
dB
dB
NOTES:
3. AD(%) = 10A-----D---2--(-0-d----B-----) 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.
6.
7.
Full Power Bandwidth is guaranteed by equation: Full Power Bandwidth
Refer to typical performance curve in Data Sheet.
=
2-S---π-l--e---wV----P--R--E--a--A--t-e-K-- (VPEAK =
5V) .
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.
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HA-2544
Test Circuits and Waveforms
V+
RS
VIN +
-
V-
VOUT
CL RL
NOTES:
11. VS = ±15V.
12. AV = +1.
13. RS = 50or 75(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.
FIGURE 1. TRANSIENT RESPONSE
VIN VIN
VOUT
VOUT = 0 to +10V
Vertical Scale: VIN = 5V/Div.; VOUT = 2V/Div.
Horizontal Scale: 100ns/Div.
LARGE SIGNAL RESPONSE
VOUT
VOUT = 0 to +200mV
Vertical Scale: VIN = 100mV/Div.; VOUT = 100mV/Div.
Horizontal Scale: 100ns/Div.
SMALL SIGNAL RESPONSE
SETTLING
POINT
5k5k
2k
2k
VIN -
+
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
BAL
1
-IN 2
+IN 3
V-
RT
4
-
+
8 NC
7 V+
6 OUT
5
BAL
NOTE: Tested offset adjustment range is |VOS + 1mV| minimum
referred to output. Typical range for RT = 20kis approximately
±30mV.
FIGURE 3. OFFSET VOLTAGE ADJUSTMENT
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HA-2544
Schematic Diagram
R1 R2
V+
R4
QP24
R2A
QP23
QP57
QP58
QP6
V-
QN22
R7
QP20
QN21
R28
R8
R9
QP19
QN36
QP5
C1
QN50
R37 R36
QP32
QP33
D34
D37
QP44
QN43
D38
D39 R10
D40
V-
V+
+INPUT
-INPUT
QN1 QN2
R24
200
R25
200
QN51
R30
QP52
QN53
R35
R32
36
OUTPUT
R33
36
QP54
D41
QP16
R11
QN17
QN18
R12
R13
QP15
QN59
QN9
QN10
QN46
R14 V+
QN13
QN14
QN55
QN60
QN11
QN12
QN48
R15 R16
5k
R38
BAL
5k
R39
R17
BAL
R18 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
(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 1kload. 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.
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