EL4421C22C41C42C43C44C

Multiplexed-Input Video Amplifiers

Note All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication however this data sheet cannot be a ‘‘controlled document’’ Current revisions if any to these

specifications are maintained at the factory and are available upon your request We recommend checking the revision level before finalization of your design documentation

1994 Elantec Inc

Features

80 MHz

 70 dB off-channel isolation at

4 MHz

 Directly drives high-impedance

or 75

X loads

 02% and 02 differential gain

and phase errors

 8 ns switching time

 02% loaded gain error

supplies

 160 mW maximum dissipation at

g

5V supplies

Ordering Information

Part No

Temp Range

Package

Outline

EL4421CN

40 Cto a85 C 8 Pin PDIP MDP0031

EL4421CS

40 Cto a85 C 8 Pin SO

MDP0027

EL4422CN

40 Cto a85 C 8 Pin PDIP MDP0031

EL4422CS

40 Cto a85 C 8 Pin SO

MDP0027

EL4441CN

40 Cto a85 C 14 Pin PDIP MDP0031

EL4441CS

40 Cto a85 C 14 Pin SO

MDP0027

EL4442CN

40 Cto a85 C 14 Pin PDIP MDP0031

EL4442CS

40 Cto a85 C 14 Pin SO

MDP0027

EL4443CN

40 Cto a85 C 14 Pin PDIP MDP0031

EL4443CS

40 Cto a85 C 14 Pin SO

MDP0027

EL4444CN

40 Cto a85 C 14 Pin PDIP MDP0031

EL4444CS

40 Cto a85 C 14 Pin SO

MDP0027

General Description

The EL44XX family of video multiplexed-amplifiers offers a

very quick 8 ns switching time and low glitch along with very

low video distortion The amplifiers have good gain accuracy

even when driving low-impedance loads To save power the am-

plifiers do not require heavy loading to remain stable

The EL4421 and EL4422 are two-input multiplexed amplifiers

The -inputs of the input stages are wired together and the de-

vice can be used as a pin-compatible upgrade from the

MAX453

The EL4441 and EL4442 have four inputs also with common

feedback These may be used as upgrades of the MAX454

The EL4443 and EL4444 are also 4-input multiplexed amplifi-

ers but both positive and negative inputs are wired separately

A wide variety of gain- and phase-switching circuits can be built

using independent feedback paths for each channel

The EL4421 EL4441 and EL4443 are internally compensated

for unity-gain operation The EL4422 EL4442 and EL4444 are

ing back-matched cables

The amplifiers have an operational temperature of

40 Cto

a

85 C and are packaged in plastic 8- and 14-pin DIP and 8- and

14-pin SO

The EL44XX multiplexed-amplifier family is fabricated with

Elantec’s proprietary complementary bipolar process which

gives excellent signal symmetry and is very rugged

Connection Diagrams

EL4421EL4422

4421 1

EL4441EL4442

4421 2

EL4443EL4444

4421 3

Manufactured under US Patent No 5352987