HA3-2544C-5 - Intersil Corporation

File Number 2900.4

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

HA-2544

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.

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

Ordering Information

PART NUMBER

(BRAND) TEMP.

RANGE (oC) PACKAGE PKG.

NO.

HA3-2544C-5 0 to 75 8 Ld PDIP E8.3

HA7-2544-2 -55 to 125 8 Ld CERDIP F8.3A

V+

OUT

BAL

-IN

+IN

V-

Data Sheet April 1999

Absolute Maximum Ratings Thermal Information

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 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 VSUPPLY = ±15V, CL≤10pF, RL = 1kΩ, Unless Otherwise Speciﬁed

PARAMETER TEST

CONDITIONS TEMP

(oC)

HA-2544-2 HA-2544C-5

UNITSMIN TYP MAX MIN TYP MAX

INPUT CHARACTERISTICS

Offset Voltage 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

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

TRANSFER CHARACTERISTICS

Large Signal Voltage Gain (Note 7) VO = ±5V 25 3.5 6 - 3 6 - kV/V

Full 2.5 - - 2 - - kV/V

Common Mode Rejection Ratio (Note 7) ∆VCM = ±10V -2, -5 75 89 - 70 89 - dB

-9 75 89 - 65 89 - dB

Minimum Stable Gain 25 +1 - - +1 - - V/V

Unity Gain Bandwidth (Note 7) VO = ±100mV 25 - 45 - - 45 - MHz

Gain Bandwidth Product (Note 7) VO = ±100mV 25 - 50 - - 50 - MHz

HA-2544

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 - Ω

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 = 1kΩ (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 - dB

-9 65 80 - 65 80 - dB

NOTES:

3. .

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. Full Power Bandwidth is guaranteed by equation: .

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.

Electrical Speciﬁcations VSUPPLY = ±15V, CL≤10pF, RL = 1kΩ, Unless Otherwise Speciﬁed (Continued)

PARAMETER TEST

CONDITIONS TEMP

(oC)

HA-2544-2 HA-2544C-5

UNITSMIN TYP MAX MIN TYP MAX

AD(%) 10

ADdB()

--------------------- 1–100×=

Full Power Bandwidth Slew Rate

2πVPEAK

-----------------------------VPEAK 5V=()=

HA-2544

Test Circuits and Waveforms

FIGURE 1. TRANSIENT RESPONSE

LARGE SIGNAL RESPONSE SMALL SIGNAL RESPONSE

FIGURE 2. SETTLING TIME TEST CIRCUIT FIGURE 3. OFFSET VOLTAGE ADJUSTMENT

VOUT

VIN

V-

V+ NOTES:

11. VS = ±15V.

12. AV = +1.

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.

VIN

VOUT

VOUT = 0 to +10V

Vertical Scale: VIN = 5V/Div.; VOUT = 2V/Div.

Horizontal Scale: 100ns/Div.

VIN

VOUT

VOUT = 0 to +200mV

Vertical Scale: VIN = 100mV/Div.; VOUT = 100mV/Div.

Horizontal Scale: 100ns/Div.

+VOUT

VIN

SETTLING

POINT

5kΩ

2kΩ

5kΩ

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.

V+

OUT

BAL

-IN

+IN

V-

NOTE: Tested offset adjustment range is |VOS + 1mV| minimum

referred to output. Typical range for RT = 20kΩ is approximately

±30mV.

HA-2544

Schematic Diagram

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 inf ormation is carried in the

amplitude and phase as well as in the DC le v el. 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 unmeasurab le differential gain and

diff erential phase (0.03% and 0.03 degrees), and lo w noise

(20nV/√Hz). The HA-2544 meets these guidelines .

The HA-2544 also offers the advantage of a full output voltage

s wing of ±10V into a 1kΩ load. This equates to a full pow er

bandwidth of 2.4MHz f or 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.

R1R2

R2A

QP24

QP23

QP57

R7R8

QN22

QP58

QP20

R28

QN21

QP19

V-

R37 R36

QP33

QP32

D34

D38

D37

D39

D40

R10

QP44 QN43

R11 R12

R13

QN17

QP16

QP15

QN14

V+

R14

R15

QN13

QN59 QN9 QN10 QN46

QN55 QN60 QN11 QN12 QN48

R16

BAL BAL

5kΩ

R38 5kΩ

R39 R17 R18 R31

V-

D41

QP52 QP54

36Ω

R33

OUTPUT

36Ω

R32

R35

R30

QN53

QN51

QN50

QP5

QN36

QP6

V+

-INPUT

200Ω

R25

200Ω

R24

QN1 QN2

+INPUT

QN18

V-

V+

HA-2544

Another usage might be required for a direct 50Ωor 75Ωload

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

FIGURE 4. APPLICATION 1, 75Ω DIFFERENTIAL INPUT BUFFER FIGURE 5. APPLICATION 2, COMPOSITE VIDEO SYNC

SEPARATOR

FIGURE 6. APPLICATION 3, 100kHz HIGH PASS 2-POLE

BUTTERWORTH FILTER FIGURE 7. MEASURED FREQUENCY RESPONSE OF

APPLICATION 3

SHIELDED

CABLE

1.21K

HA-2544

100 1.21K

1.21K 1.21K

-+HA-2544

1N5711

SYNC ONLY

COMPOSITE

VIDEO

VIDEO AND

BLANK

HA-2544

2.1K

750pF750pF

INPUT OUTPUT

2π (2.1K x 750pF)

fO=

-20

-40

-60

-80

-100

ATTENUATION (dB)

10 100 1K 10K 100K 1M 10M

FREQUENCY (Hz)

180

135

-45

PHASE (DEGREES)

f0 = 105.3kHz

HA-2544

Typical Performance Curves

FIGURE 8. INPUT NOISE VOLTAGE AND NOISE CURRENT

vs FREQUENCY FIGURE 9. INPUT OFFSET VOLTAGE vs TEMPERATURE

(3 TYPICAL UNITS)

FIGURE 10. NOISE VOLTAGE (AV = 1000) FIGURE 11. INPUT BIAS CURRENT vs TEMPERATURE

FIGURE 12. PSRR AND CMRR vs TEMPERATURE FIGURE 13. OPEN LOOP GAIN vs TEMPERATURE

FREQUENCY (Hz)

1K 10K 100K10010

INPUT NOISE VOLTAGE (nV/

√

Hz)

100

1000

INPUT NOISE VOLTAGE

INPUT NOISE CURRENT 10

100

1000

INPUT NOISE CURRENT (pA/√Hz)

TEMPERATURE (oC)

0 20 40 60 80 100 120-20-40-60

-6

-5

-4

-3

-2

-1

OFFSET VOLTAGE (mV)

140

0.1Hz to 10Hz, Noise Voltage = 0.97µVP-P TEMPERATURE (oC)

0 20 40 60 80 100 120-20-40-60

BIAS CURRENT (µA)

140

RL = 1kΩ, VS = ±15V

PSRR AND CMRR (dB)

TEMPERATURE (oC)

0 20 40 60 80 100 120-20-40-60 140

RL = 1kΩ, VS = ±15V

CMRR

-PSRR

+PSRR

OPEN LOOP GAIN (kV/V)

-AVOL

TEMPERATURE (oC)

0 20 40 60 80 100 120-20-40-60

140

+AVOL

RL = 1kΩ, VS = ±15V

HA-2544

FIGURE 14. OUTPUT VOLTAGE SWING vs SUPPLY VOLTAGE FIGURE 15. FREQUENCY RESPONSE AT VARIOUS GAINS

FIGURE 16. OUTPUT CURRENT vs SUPPLY VOLTAGE FIGURE 17. OPEN LOOP RESPONSE

FIGURE 18. SUPPLY CURRENT vs SUPPLY VOLTAGE

(NORMALIZED TO VS = ±15V AT 25oC) FIGURE 19. VOLTAGE FOLLOWER RESPONSE

Typical Performance Curves (Continued)

57 9111315

SUPPLY VOLTAGE (±V)

-2

-4

-6

-8

-10

-12

OUTPUT VOLTAGE SWING (V)

-55oC 25oC 125oC

+VOUT

-VOUT

FREQUENCY (Hz)

GAIN (dB)

135

180

PHASE MARGIN (DEGREES)

10K 100K 1M 10M 100M1K100

RL = 1kΩ, VS = ±15V

AV = 100

AV = 10

AV = -1

OPEN LOOP

AV = 100

AV = 10 AV = -1

OPEN LOOP

-10

57 9111315

SUPPLY VOLTAGE (±V)

-20

-30

-40

-50

OUTPUT CURRENT (mA)

-55oC 25oC 125oC

FREQUENCY (Hz)

10K 100K 1M 10M 100M1K100

-45

-90

-135

-180

PHASE (DEGREES)

GAIN (dB)

±8V

±5V

±8V

±15V

±5V

±15V

VOUT = ±100mV

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

NORMALIZED SUPPLY CURRENT

579111315

SUPPLY VOLTAGE (±V)

0.3

0.2

0.1

25oC

-55oC

125oC

AV=+1, VOUT = ±100mV

RL = 1kΩ, CL = ≤ 10pF

= ±8V

= ±15V

= ±5V

FREQUENCY (Hz)

10K 100K 1M 10M 100M1K100

-3

-6

GAIN (dB)

-45

-90

-135

-180

PHASE (DEGREES)

HA-2544

Typical Video Performance Curves

FIGURE 20. AC GAIN VARIATION vs DC OFFSET LEVELS

(DIFFERENTIAL GAIN) FIGURE 21. AC PHASE VARIATION vs DC OFFSET LEVELS

(DIFFERENTIAL PHASE)

FIGURE 22. DIFFERENTIAL GAIN FIGURE 23. DIFFERENTIAL PHASE

FIGURE 24. GAIN FLATNESS FIGURE 25. CHROMINANCE TO LUMINANCE DELAY

0.004

0.003

0.002

0.001

-0.001

-0.002

-0.003

-0.004

-0.005

-0.006

DIFFERENTIAL GAIN (dB)

012345

DC VOLTAGE LEVEL

f = 3.58MHz AND 5.00MHz

0.200

0.150

0.100

0.050

-0.050

-0.100

-0.150

-0.200

-0.250

-0.300

DIFFERENTIAL PHASE (DEGREES)

01 2345

DC VOLTAGE LEVEL

SYSTEM

ALONE

f = 3.58MHz

f = 5.00MHz

NTSC Method, RL = 1kΩ, Differential Gain <0.05% at TA = 75oC

No Visual Difference at TA = -55oC or 125oCNTSC Method, RL = 1kΩ,

Differential Phase < 0.05 Deg ree at TA = 75oC

No Visual Difference at TA = -55oC or 125oC

AV = +1, VIN = ±100mV

RL = 1kΩ, CL < 10pF

0.15

0.10

0.05

-0.05

-0.10

-0.15

-0.20

GAIN FLATNESS (dB)

100 1K 10K 100K 1M 10M 100M

FREQUENCY (Hz)

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.

INPUT

OUTPUT

HA-2544

Die Characteristics

DIE DIMENSIONS:

80 mils x 64 mils x 19 mils

2030µm x 1630µm x 483µm

METALLIZATION:

Type: Al, 1% Cu

Thickness: 16kÅ±2kÅ

PASSIVATION:

Type: Nitride (Si3N4) over Silox (SiO2, 5% Phos.)

Silox Thickness: 12kÅ±2kÅ

Nitride Thickness: 3.5kÅ±1.5kÅ

SUBSTRATE POTENTIAL (POWERED UP):

V-

TRANSISTOR COUNT:

PROCESS:

Bipolar Dielectric Isolation

Metallization Mask Layout HA-2544

FIGURE 26. ±2V OUTPUT SWING (WITH RLOAD =75Ω,

FREQUENCY = 5.00MHz) FIGURE 27. BANDWIDTH vs LOAD CAPACITANCE

Typical Video Performance Curves (Continued)

VIN = 2.0V/Div., VOUT = 2.0V/Div., Timebase = 50ns

-250.000ns 0.00000ns 250.000ns

VIN

VOUT

AV = +1, VS = ±15V

RL = 1kΩ

-3

-6

-9

-12

-15

-18

VOLTAGE GAIN (dB)

100K 1M 10M 100M

135

180

PHASE SHIFT (DEGREES)

CLBANDWIDTH

(-3dB) PHASE

(-3dB)

35.5

40.8

50.1

55.8

54.8

-77.1o

-89.6o

-122.0o

-150.7o

-179.1o

(pF)

VIN VO

V+

OUT

BAL

-IN

+IN

V-

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 with-

out 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.

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HA-2544