CONNECTION DIAGRAM

8-Pin Plastic Mini-DIP (N), SOIC (R)

and Cerdip (Q) Packages

OFFSET

NULL

1

2

3

4

8

7

6

5

TOP VIEW

AD810

DISABLE

+V

S

OUTPUT

OFFSET

NULL

–IN

+IN

–V

S

REV. A

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices 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 Analog Devices.

a

Low Power

Video Op Amp with Disable

AD810

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 617/329-4700

Fax: 617/326-8703

FEATURES

High Speed

80 MHz Bandwidth (3 dB, G = +1)

75 MHz Bandwidth (3 dB, G = +2)

1000 V/ s Slew Rate

Ideal for Video Applications

30 MHz Bandwidth (0.1 dB, G = +2)

0.02% Differential Gain

0.04 Differential Phase

Low Noise

2.9 nV/

√Hz Input Voltage Noise

13 pA/

√Hz Inverting Input Current Noise

Low Power

8.0 mA Supply Current max

2.1 mA Supply Current (Power-Down Mode)

High Performance Disable Function

Turn-Off Time 100 ns

Break Before Make Guaranteed

Input to Output Isolation of 64 dB (OFF State)

Flexible Operation

Specified for

5 V and

15 V Operation

2.9 V Output Swing Into a 150

5 V)

APPLICATIONS

Professional Video Cameras

Multimedia Systems

NTSC, PAL & SECAM Compatible Systems

Video Line Driver

ADC/DAC Buffer

DC Restoration Circuits

PRODUCT DESCRIPTION

The AD810 is a composite and HDTV compatible, current

feedback, video operational amplifier, ideal for use in systems

such as multimedia, digital tape recorders and video cameras.

The 0.1 dB flatness specification at bandwidth of 30 MHz

(G = +2) and the differential gain and phase of 0.02% and

0.04

° (NTSC) make the AD810 ideal for any broadcast quality

video system. All these specifications are under load conditions

of 150

Ω (one 75 Ω back terminated cable).

The AD810 is ideal for power sensitive applications such as

video cameras, offering a low power supply current of 8.0 mA

max. The disable feature reduces the power supply current to

only 2.1 mA, while the amplifier is not in use, to conserve

power. Furthermore the AD810 is specified over a power supply

range of

±5 V to ±15 V.

The AD810 works well as an ADC or DAC buffer in video

systems due to its unity gain bandwidth of 80 MHz. Because the

AD810 is a transimpedance amplifier, this bandwidth can be

maintained over a wide range of gains while featuring a low

noise of 2.9 nV/

√Hz for wide dynamic range applications.

0.10

0

15

0.03

0.01

6

0.02

5

0.06

0.04

0.05

0.07

0.08

0.09

14

13

12

11

10

9

8

7

0.20

0.18

0.16

0.14

0.12

0.10

0.08

0.06

0.04

0.02

0

GAIN

PHASE

GAIN = +2

100 IRE

MODULATED RAMP

SUPPLY VOLTAGE – ± Volts

Differential Gain and Phase vs. Supply Voltage

GAIN = +2

±2.5V

±5V

±2.5V

PHASE

GAIN

0

–5

10

100

–1

–2

–3

–4

1

1

1000

0

–45

–90

–135

–180

–225

–270

FREQUENCY – MHz

±5V

Closed-Loop Gain and Phase vs. Frequency, G = +2,