LM393P Texas Instruments 模拟比较器 Dual Differential

1 Features

1• Single-Supply or Dual Supplies

• Wide Range of Supply Voltage

– Maximum Rating: 2 V to 36 V

– Tested to 30 V: Non-V Devices

– Tested to 32 V: V-Suffix Devices

• Low Supply-Current Drain Independent of Supply

Voltage: 0.4 mA (Typical) Per Comparator

• Low Input Bias Current: 25 nA (Typical)

• Low Input Offset Current: 3 nA (Typical) (LM193)

• Low Input Offset Voltage: 2 mV (Typical)

• Common-Mode Input Voltage Range

Includes Ground

2 Applications

• Chemical or Gas Sensor

• Desktop PC

• Motor Control: AC Induction

• Weigh Scale

3 Description

These devices consist of two independent voltage

comparators that are designed to operate from a

single power supply over a wide range of voltages.

Operation from dual supplies also is possible as long

as the difference between the two supplies is 2 V to

36 V, and VCC is at least 1.5 V more positive than the

input common-mode voltage. Current drain is

independent of the supply voltage. The outputs can

be connected to other open-collector outputs to

achieve wired-AND relationships.

The LM193 device is characterized for operation from

−55°C to +125°C. The LM293 and LM293A devices

are characterized for operation from −25°C to +85°C.

The LM393 and LM393A devices are characterized

for operation from 0°C to 70°C. The LM2903,

LM2903V, and LM2903AV devices are characterized

for operation from −40°C to +125°C.