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LM7121

SNOS750A – AUGUST 1999 – REVISED OCTOBER 2014

LM7121 235-MHz Tiny Low Power Voltage Feedback Amplifier

1 Features

3 Description

The LM7121 is a high performance operational

1

•

amplifier

which

addresses

the

increasing

AC

•

Easy to use Voltage Feedback Topology

performance

needs

of

video

and

imaging

•

Stable with Unlimited Capacitive Loads

applications, and the size and power constraints of

portable applications.

•

Tiny SOT23-5 Package — Typical Circuit Layout

Takes Half the Space Of SO-8 Designs

The LM7121 can operate over a wide dynamic range

•

Unity Gain Frequency: 175 MHz

of supply voltages, from 5 V (single supply) up to

±15V (see Application and Implementation for more

•

Bandwidth (

details). It offers an excellent speed-power product

•

Slew Rate: 1300V/

μs

delivering 1300 V/

μs and 235 MHz Bandwidth (−3 dB,

•

Supply Voltages:

amplifier is stability while driving unlimited capacitive

–

SO-8: 5 V to ±15 V

loads.

–

SOT23-5: 5 V to ±5 V

Due to its tiny SOT23-5 package, the LM7121 is ideal

•

Characterized for: +5 V, ±5 V, ±15 V

for designs where space and weight are the critical

•

Low Supply Current: 5.3 mA

parameters. The benefits of the tiny package are

evident in small portable electronic devices, such as

2 Applications

cameras, and PC video cards. Tiny amplifiers are so

small that they can be placed anywhere on a board

•

Scanners, Color Fax, Digital Copiers

close to the signal source or near the input to an A/D

•

PC Video Cards

converter.

•

Cable Drivers

Device Information(1)

•

Digital Cameras

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

ADC/DAC Buffers

SOT-23 (5)

2.921 mm × 1.651 mm

•

Set-top Boxes

LM7121

SOIC (8)

4.902 mm × 3.912 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Unity Gain Frequency vs. Supply Voltage

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.