LM7121IM5X datasheet(1/19 Pages) NSC

部件名	LM7121IM5X

功能描述	235 MHz Tiny Low Power Voltage Feedback Amplifier

PDF	19 Pages

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制造商	NSC [National Semiconductor (TI)]

网页	http://www.national.com

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LM7121

235 MHz Tiny Low Power Voltage Feedback Amplifier

General Description

The LM7121 is a high performance operational amplifier

which addresses the increasing AC performance needs of

video and imaging applications, and the size and power con-

straints of portable applications.

The LM7121 can operate over a wide dynamic range of sup-

ply voltages, from 5V (single supply) up to ±15V (see the Ap-

plication Information section for more details). It offers an ex-

cellent speed-power product delivering 1300V/µs and 235

MHz Bandwidth (−3 dB, A

V = +1). Another key feature of this

operational amplifier is stability while driving unlimited ca-

pacitive loads.

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

designs where space and weight are the critical parameters.

The benefits of the Tiny package are evident in small por-

table electronic devices, such as cameras, and PC video

cards. Tiny amplifiers are so small that they can be placed

anywhere on a board close to the signal source or near the

input to an A/D converter.

Features

(Typical unless otherwise noted) V

S = ±15V

n Easy to use voltage feedback topology

n Stable with unlimited capacitive loads

n Tiny SOT23-5 package — typical circuit layout takes half

the space of SO-8 designs

n Unity gain frequency:

175 MHz

n Bandwidth (−3 dB, AV = +1, RL = 100Ω):

235 MHz

n Slew rate:

1300V/µs

n Supply Voltages SO-8:

5V to ±15V

SOT23-5:

5V to ±5V

n Characterized for:

+5V, ±5V, ±15V

n Low supply current:

5.3 mA

Applications

n Scanners, color fax, digital copiers

n PC video cards

n Cable drivers

n Digital cameras

n ADC/DAC buffers

n Set-top boxes

Connection Diagrams

Ordering Information

Package

Ordering Information

NSC Drawing

Package

Supplied As

Number

Marking

8-Pin SO-8

LM7121IM

M08A

LM7121IM

Rails

LM7121IMX

M08A

LM7121IM

2.5k Tape and Reel

5-Pin SOT23-5

LM7121IM5

MA05A

A03A

1k Tape and Reel

LM7121IM5X

MA05A

A03A

3k Tape and Reel

8-Pin SO-8

DS012348-2

Top View

5-Pin SOT23

DS012348-1

Top View

August 1999

DS012348

www.national.com

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