LMP7701/LMP7702/LMP7704

Precision, CMOS Input, RRIO, Wide Supply Range

Amplifiers

General Description

The LMP7701/LMP7702/LMP7704 are single, dual, and

quad low offset voltage, rail-to-rail input and output precision

amplifiers each with CMOS input stage and wide supply

voltage range. The LMP7701/LMP7702/LMP7704 are part of

interface and other instrumentation applications.

along with the guaranteed low input bias current of less than

The LMP7701/LMP7702/LMP7704 are built utilizing VIP50

technology, which allows the combination of a CMOS input

stage and a 12V common mode and supply voltage range.

This makes the LMP7701/LMP7702/LMP7704 great choices

in many applications where conventional CMOS parts can-

not operate under the desired voltage conditions.

The LMP7701/LMP7702/LMP7704 have a rail-to-rail input

stage that significantly reduces the CMRR glitch commonly

associated with rail-to-rail input amplifiers. This is achieved

by trimming both sides of the complimentary input stage,

thereby reducing the difference between the NMOS and

PMOS offsets. The output of the LMP7701/LMP7702/

LMP7704 swings within 40 mV of either rail to maximize the

signal dynamic range in applications requiring low supply

voltage.

The LMP7701 is offered in the space saving 5-Pin SOT23

package, the LMP7702 is offered in the 8-Pin MSOP, and the

quad LMP7704 is offered in the 14-Pin TSSOP package.

These small packages are ideal solutions for area con-

strained PC boards and portable electronics.

Features

Unless otherwise noted, typical values at V

n

Input offset voltage (LMP7701)

n

n

Input bias current

n

Input voltage noise

9 nV/

n

CMRR

130 dB

n

Open loop gain

130 dB

n

Temperature range

−40˚C to 125˚C

n

Unity gain bandwidth

2.5 MHz

n

Supply current (LMP7701)

715 µA

n

Supply current (LMP7702)

1.5 mA

n

Supply current (LMP7704)

2.9 mA

n

Supply voltage range

2.7V to 12V

n

Rail-to-rail input and output

Applications

n

High impedance sensor interface

n

Battery powered instrumentation

n

High gain amplifiers

n

DAC buffer

n

Instrumentation amplifier

n

Active filters

Typical Application

20127305

Precision Current Source

October 2006

© 2006 National Semiconductor Corporation

DS201273

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