EL4095C

Video Gain ControlFaderMultiplexer

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

1992 Elantec Inc

Features

 Full function video fader

 002%002 differential gain

phase

100% gain

 25 ns multiplexer included

 Output amplifier included

 Calibrated linear gain control

 60 MHz bandwidth

 Low thermal errors

Applications

 Video faderswipers

 Gain control

 Graphics overlay

 Video text insertion

 Level adjust

 Modulation

Ordering Information

Part No

Temp Range

Package

Outline

EL4095CS

b

MDP0027

General Description

The EL4095C is a versatile variable-gain building block At its

core is a fader which can variably blend two inputs together and

an output amplifier that can drive heavy loads Each input ap-

pears as the input of a current-feedback amplifier and with ex-

ternal resistors can separately provide any gain desired The

output is defined as

where A and B are the fed-back gains of each channel

Additionally two logic inputs are provided which each override

and 0% for the other The logic inputs switch in only 25 ns and

provide high attenuation to the off channel while generating

very small glitches

Signal bandwidth is 60 MHz

and gain-control bandwidth

20 MHz The gain control recovers from overdrive in only

70 ns

is available in both 14-pin DIP and narrow surface mount pack-

ages

Connection Diagram

14-Pin DIP SO

4095 – 1

Top View

Manufactured under US Patent No 5321371 5374898