REV. D

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

use, nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

a

AD8072/AD8073

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

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2002

Low Cost, Dual/Triple

Video Amplifiers

PIN CONFIGURATIONS

8-Lead Plastic (N), SOIC (R), and

SOIC (RM) Packages

TOP VIEW

(Not to Scale)

8

7

6

5

1

2

3

4

OUT1

–IN1

+IN1

OUT2

–IN2

+IN2

AD8072

14-Lead Plastic (N), and SOIC (R) Packages

TOP VIEW

(Not to Scale)

14

13

12

11

10

9

8

1

2

3

4

5

6

7

NC = NO CONNECT

NC

NC

+IN1

–IN1

OUT1

OUT2

–IN2

+IN2

+IN3

–IN3

OUT3

NC

AD8073

FEATURES

Very Low Cost

)

Gain Flatness of 0.1 dB to 10 MHz

0.05% Differential Gain Error

0.1 Differential Phase Error

Low Power

3.5 mA/Amplifier Supply Current

Operates on Single 5 V to 12 V Supply

High Speed

100 MHz, –3 dB Bandwidth (G = +2)

500 V/ s Slew Rate

Fast Settling Time of 25 ns (0.1%)

Easy to Use

30 mA Output Current

Output Swing to 1.3 V of Rails on Single 5 V Supply

APPLICATIONS

Video Line Driver

Computer Video Plug-In Boards

RGB or S-Video Amplifier in Component Systems

PRODUCT DESCRIPTION

The AD8072 (dual) and AD8073 (triple) are low cost, current

feedback amplifiers intended for high volume, cost sensitive

applications. In addition to being low cost, these amplifiers

deliver solid video performance into a 150

Ω load while consuming

only 3.5 mA per amplifier of supply current. Furthermore, the

AD8073 is three amplifiers in a single 14-lead narrow-body

SOIC package. This makes it ideal for applications where small

size is essential. Each amplifier’s inputs and output are acces-

sible providing added gain setting flexibility.

These devices provide 30 mA of output current per amplifier,

and are optimized for driving one back terminated video load

(150

Ω) each. These current feedback amplifiers feature gain

flatness of 0.1 dB to 10 MHz while offering differential gain and

phase error of 0.05% and 0.1

°. This makes the AD8072 and

AD8073 ideal for business and consumer video electronics.

Both will operate from a single 5 V to 12 V power supply. The

outputs of each amplifier swing to within 1.3 volts of either sup-

ply rail to accommodate video signals on a single 5 V supply.

The high bandwidth of 100 MHz, 500 V/

µs of slew rate, along

with settling to 0.1% in 25 ns, make the AD8072 and AD8073

useful in many general purpose, high speed applications where a

single 5 V or dual power supplies up to

±6 V are needed. The

AD8072 is available in 8-lead plastic DIP, SOIC, and

µSOIC

packages while the AD8073 is available in 14-lead plastic DIP and

SOIC packages. Both operate over the commercial temperature

range of 0

°C to 70°C. Additionally, the AD8072ARM operates

over the industrial temperature range of –40

°C to +85°C.

FREQUENCY – MHz

6.1

6.0

5.3

0.1

500

110

100

5.9

5.8

5.4

5.7

5.6

5.5

6

5

4

3

2

1

0

7

–1

0.1 dB

DIV

1 dB

DIV

Figure 1. Large Signal Frequency Response