EL2120C

100 MHz Current Feedback Amplifier

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

1991 Elantec Inc

Features

 Excellent differential gain and

 700 V ms slew rate

 01 dB flatness to 20 MHz

 Output disable in 50 ns - remains

high impedance even when

driven with large slew rates

 AC characteristics are lot and

temperature stable

 Available in small SO-8 package

Applications

 Video gain block

 Residue amplifier

 Multiplexer

 Current to voltage converter

 Coax cable driver with gain of 2

 ADC driver

Ordering Information

Part No

Temp Range

Package

Outline

EL2120CN

8-Pin P-DIP

MDP0031

EL2120CS

8-Lead SO

MDP0027

Connection Diagrams

P-DIP

2120 – 1

SO

2120 – 2

Top View

General Description

The EL2120C is a wideband current feedback amplifier opti-

mized for video performance Its 001% differential gain and

plies exceeds the performance of other amplifiers running on

g

tortions to 001% and 001 degrees and below The EL2120C can

Being a current feedback design bandwidth is a relatively con-

has been optimized for flat gain over frequency and all charac-

teristics are maintained at positive unity gain Because the in-

put slew rate is similar to the 700 V

ms output slew rate the

part makes an excellent high-speed buffer

The EL2120C has a superior output disable function Time to

enable or disable is 50 ns and does not change markedly with

temperature Furthermore in disable mode the output does not

draw excessive currents when driven with 1000 V

ms slew rates

The output appears asa3pF load when disabled

Simplified Schematic

2120 – 21