1

®

FN7044

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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EL2120

100MHz Current Feedback Amplifier

The EL2120 is a wideband current

feedback amplifier optimized for video

performance. Its 0.01% differential

gain and 0.03 degree differential phase performance when

at ±5V supplies exceeds the performance of other amplifiers

running on ±15V supplies. Operating on ±8 to ±15V supplies

reduces distortions to 0.01% and 0.01 degrees and below.

The EL2120 can operate with supplies as low as ±2.5V or a

single +5V supply.

Being a current feedback design, bandwidth is a relatively

constant 100MHz over the ±1 to ±10 gain range. The

EL2120 has been optimized for flat gain over frequency and

all characteristics are maintained at positive unity gain.

Because the input slew rate is similar to the 700V/µs output

slew rate the part makes an excellent high-speed buffer.

The EL2120 has a superior output disable function. Time to

enable or disable is 50ns and does not change markedly

with temperature. Furthermore, in disable mode the output

does not draw excessive currents when driven with

1000V/µs slew rates. The output appears as a 3pF load

when disabled.

Simplified Schematic

Features

• Excellent differential gain and phase on ±5V to ±15V

supplies

• 100MHz -3dB bandwidth from gains of ±1 to ±10

• 700V/µs slew rate

• 0.1dB flatness to 20MHz

• Output disable in 50ns - remains high impedance even

when driven with large slew rates

• Single +5V supply operation

• 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

Pinouts

Ordering Information

PART

NUMBER

TEMP. RANGE

PACKAGE

PKG. NO.

EL2120CN

0°C to +75°C

8-Pin PDIP

MDP0031

EL2120CS

0°C to +75°C

8-Pin SO

MDP0027

EL2120

(8-PIN PDIP)

TOP VIEW

EL2120

(8-PIN SO)

TOP VIEW

Data Sheet

January 1996, Rev E