FEATURES

· Wide Power-Supply Voltage Range

– Single Supply: 3 V to 32 V

– Dual Supply: ±1.5 V to ±16 V

· Low Supply-Current Drain Essentially

Independent of Supply Voltage: 600 mA

· Low Input Biasing Current: 50 nA

· Low Input Offset Voltage: 2 mV

· Low Input Offset Current: 5 nA

· Input Common-Mode Voltage Range Includes

Ground

· Differential Input Voltage Range Equals

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

· Additional Comparator Features

– Low Output Saturation Voltage:

250 mV at 4 mA

– Output Voltage Compatible With All Types

of Logic Systems

ADVANTAGES

· Eliminates Need for Dual Power Supplies

· An Internally Compensated Operational

Amplifier and a Precision Comparator in the

Same Package

· Allows Sensing at or Near Ground

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DESCRIPTION/ORDERING INFORMATION

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.