LM392DR

低功耗运算放大器和电压比较器 LOW-POWER OPERATIONAL AMPLIFIER AND VOLTAGE COMPARATOR

DESCRIPON/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.

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 µA

• 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