LM614

Quad Operational Amplifier and Adjustable Reference

General Description

The LM614 consists of four op-amps and a programmable

voltage reference in a 16-pin package. The op-amp

out-performs most single-supply op-amps by providing

higher speed and bandwidth along with low supply current.

This device was specifically designed to lower cost and

board space requirements in transducer, test, measurement

and data acquisition systems.

Combining a stable voltage reference with four wide output

swing op-amps makes the LM614 ideal for single supply

transducers, signal conditioning and bridge driving where

large common-mode-signals are common. The voltage ref-

erence consists of a reliable band-gap design that maintains

low dynamic output impedance (1

Ω typical), excellent initial

tolerance (0.6%), and the ability to be programmed from

1.2V to 6.3V via two external resistors. The voltage refer-

ence is very stable even when driving large capacitive loads,

as are commonly encountered in CMOS data acquisition

systems.

LM614 is a space-saving monolithic alternative to a multichip

solution, offering a high level of integration without sacrificing

performance.

Features

Op Amp

n Low operating current:

300 µA

n Wide supply voltage range:

4V to 36V

n Wide common-mode range:

V

n Wide differential input voltage:

n Available in plastic package rated for Military

Temperature Range Operation

Reference

n Adjustable output voltage:

1.2V to 6.3V

n Tight initial tolerance available:

n Wide operating current range:

17 µA to 20 mA

n Tolerant of load capacitance

Applications

n Transducer bridge driver and signal processing

n Process and mass flow control systems

n Power supply voltage monitor

n Buffered voltage references for A/D’s

Connection Diagram

Ordering Information

Reference

Tolerance & V

OS

Temperature Range

Package

NSC

Drawing

Military

Industrial

Commercial

−55˚C

≤ T

−40˚C

≤ T

0˚C

≤ T

LM614AMN

LM614AIN

—

16-pin

N16E

80 ppm/˚C max

Molded DIP

V

LM614AMJ/883

—

—

16-pin

J16A

(Note 13)

Ceramic DIP

LM614MN

LM614BIN

LM614CN

16-pin

N16E

150 ppm/˚C max

Molded DIP

V

—

LM614WM

LM614CWM

16-pin Wide

M16B

Surface Mount

DS009326-1

May 1998

© 1999 National Semiconductor Corporation

DS009326

www.national.com