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

Low Cost, Low Power

Video Op Amp

AD818

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

Low Cost

Excellent Video Performance

55 MHz 0.1 dB Bandwidth (Gain = +2)

0.01% & 0.05 Differential Gain & Phase Errors

High Speed

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

100 MHz Bandwidth (3 dB, G+ = –1)

500 V/ s Slew Rate

High Output Drive Capability

50 mA Minimum Output Current

Ideal for Driving Back Terminated Cables

Flexible Power Supply

Specified for Single (+5 V) and Dual ( 5 V to

15 V)

Power Supplies

Low Power: 7.5 mA max Supply Current

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

PRODUCT DESCRIPTION

The AD818 is a low cost, video op amp optimized for use in

video applications which require gains equal to or greater than

+2 or –1. The AD818 low differential gain and phase errors,

single supply functionality, low power and high output drive

make it ideal for cable driving applications such as video cam-

eras and professional video equipment.

With video specs like 0.1 dB flatness to 55 MHz and low differ-

ential gain and phase errors of 0.01% and 0.05

°, along with

50 mA of output current, the AD818 is an excellent choice for

any video application. The 130 MHz 3 dB bandwidth (G = +2)

AD818

1k

1k

+15V

Rbt

75

Rt

75

3

2

75

–15V

0.1µF

2.2µF

4

0.01µF

2.2µF

7

6

Ω

Ω

Ω

Ω

Ω

AD818 Video Line Driver

and 500 V/

µs slew rate make the AD818 useful in many high

speed applications including: video monitors, CATV, color

copiers, image scanners and fax machines.

The AD818 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 7.5 mA and excellent ac characteristics under all power

supply conditions, make the AD818 the ideal choice for many

demanding yet power sensitive applications.

The AD818 is a voltage feedback op amp and excels as a gain

stage in high speed and video systems (gain = >2 or –1). It

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

voltage of 2 mV max.

The AD818 is available in low cost, small 8-lead plastic mini-

DIP and SOIC packages.

0.03

15

0.06

0.04

0.05

510

SUPPLY VOLTAGE – ±Volts

0.02

0.01

0.00

DIFF GAIN

DIFF PHASE

AD818 Differential Gain and Phase vs. Supply

CONNECTION DIAGRAMS

8-Lead Plastic Mini-DIP (N), and

SOIC (R) Packages

NULL

–IN

+IN

OUTPUT

NULL

1

2

3

4

8

7

6

5

TOP VIEW

+V

S

AD818

NC

NC = NO CONNECT