FUNCTIONAL BLOCK DIAGRAM

1

2

3

4

8

7

6

5

AD828

V+

OUT2

–IN2

+IN2

OUT1

–IN1

+IN1

V–

REV. B

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

Dual, Low Power

Video Op Amp

AD828

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

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2000

FEATURES

Excellent Video Performance

Differential Gain & Phase Error of 0.01% & 0.05

High Speed

130 MHz 3 dB Bandwidth (G = +2)

450 V/ s Slew Rate

80 ns Settling Time to 0.01%

Low Power

15 mA Max Power Supply Current

High Output Drive Capability:

50 mA Minimum Output Current per Amplifier

Ideal for Driving Back Terminated Cables

Flexible Power Supply

Specified for +5 V,

5 V and

15 V Operation

3.2 V Min Output Swing into a 150

Load

5 V)

Excellent DC Performance

2.0 mV Input Offset Voltage

Available in 8-Lead SOIC and 8-Lead Plastic Mini-DIP

PRODUCT DESCRIPTION

The AD828 is a low cost, dual video op amp optimized for use

in video applications which require gains of +2 or greater and

high output drive capability, such as cable driving. Due to its

low power and single supply functionality, along with excellent

differential gain and phase errors, the AD828 is ideal for power

sensitive applications such as video cameras and professional

video equipment.

With video specs like 0.1 dB flatness to 40 MHz and low differ-

ential gain and phase errors of 0.01% and 0.05

°, along with

50 mA of output current per amplifier, the AD828 is an excel-

lent choice for any video application. The 130 MHz gain

bandwidth and 450 V/

µs slew rate make the AD828 useful in

many high speed applications including: video monitors, CATV,

color copiers, image scanners and fax machines.

1/2

AD828

0.1 F

0.1 F

V

–V

75

75

75

1k

75

1k

Figure 1. Video Line Driver

The AD828 is fully specified for operation with a single +5 V

power supply and with dual supplies from

±5 V to ±15 V. This

power supply flexibility, coupled with a very low supply current

of 15 mA and excellent ac characteristics under all power supply

conditions, make the AD828 the ideal choice for many demand-

ing yet power sensitive applications.

The AD828 is a voltage feedback op amp which excels as a gain

stage (gains >+2) or active filter in high speed and video systems

and achieves a settling time of 45 ns to 0.1%, with a low input

offset voltage of 2 mV max.

The AD828 is available in low cost, small 8-lead plastic mini-

DIP and SOIC packages.

0.04

15

0.07

0.05

0.06

510

0.03

0.01

0.02

SUPPLY VOLTAGE –

Volts

DIFF GAIN

DIFF PHASE

Figure 2. Differential Phase vs. Supply Voltage