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FEATURES

ADVANTAGES

A

B

1

8

OUTPUT A (Comparator)

V+

INVERTING INPUT B

NONINVERTING INPUT B

OUTPUT B (Operational Amplifier)

4

3

2

5

6

7

GND

NONINVERTING INPUT A

INVERTING INPUT A

−

−

+

+

D, DGK, OR P PACKAGE

(TOP VIEW)

DESCRIPTION/ORDERING INFORMATION

LM392

LOW-POWER OPERATIONAL AMPLIFIER AND VOLTAGE COMPARATOR

SLOS466 – JANUARY 2006

•

Wide Power-Supply Voltage Range

•

Additional Comparator Features

– Single Supply: 3 V to 32 V

– Low Output Saturation Voltage:

250 mV at 4 mA

– Dual Supply: ±1.5 V to ±16 V

– Output Voltage Compatible With All Types

•

Low Supply-Current Drain Essentially

of Logic Systems

Independent of Supply Voltage: 600

µA

•

Low Input Biasing Current: 50 nA

•

Low Input Offset Voltage: 2 mV

•

Eliminates Need for Dual Power Supplies

•

Low Input Offset Current: 5 nA

•

An Internally Compensated Operational

•

Input Common-Mode Voltage Range Includes

Amplifier and a Precision Comparator in the

Ground

Same Package

•

Allows Sensing at or Near Ground

•

Differential Input Voltage Range Equals

xxx

Power-Supply Voltage

•

Additional Operational Amplifier Features

– Internally Frequency Compensated for

Unity Gain

– Large DC Voltage Gain: 100 dB

– Wide Bandwidth (Unity Gain): 1 MHz

– Large Output Voltage Swing:

0 V to V+ – 1.5 V

The

LM392

consists

of

two

independent

building-block

circuits.

One

is

a

high-gain

internally-frequency-compensated operational amplifier, and the other is a precision voltage comparator. Both the

operational amplifier and the voltage comparator are designed to operate from a single power supply over a wide

range of voltages. Both circuits have input stages that force the common-mode input down to ground when

operating from a single power supply. Operation from split power supplies also is possible, and the low

power-supply current is independent of the magnitude of the supply voltage.

Applications include transducer amplifiers with pulse shapers, DC gain blocks with level detectors, and VCOs, as

well as all conventional operational amplifier or voltage-comparator circuits. The LM392 can be operated directly

from the standard 5-V power-supply voltage used in digital systems, and the output of the comparator interfaces

directly with either TTL or CMOS logic. In addition, the low-power drain makes the LM392 extremely useful in the

design of portable equipment.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.