TI Linear-Comparator LM397MFX/NOPB Solution

TI Linear-Comparator LM397MFX/NOPB dual independent series of precision voltage comparators are available in single or split supply.

These devices are designed to allow a common mode: single supply level operation. 

The input bias voltage specification down to 2.0 mV makes this device an excellent choice for automotive and consumer industrial electronics.

The Description of  LM397MFX/NOPB

The LM397 device is a single voltage comparator with an input common mode that includes ground.

The LM397 is designed to operate from a single 5-V to 30-V power supply or a split power supply. 

Its low supply current is virtually independent of the magnitude of the supply voltage.The LM397 features an open-collector output stage.

This allows the connection of an external resistor at the output. The output can directly interface with TTL,CMOS and other logic levels, by tying the resistor to different voltage levels (level translator).

The LM397 is available in the space-saving 5-Pin SOT-23 package and is pin-compatible to TI’s TL331,a single differential comparator

The LM397 Features

• TA = 25°C. Typical Values Unless Otherwise
Specified.
• 5-Pin SOT-23 Package
• Industrial Operating Range −40°C to +85°C
• Single or Dual Power Supplies
• Wide Supply Voltage Range 5 V to 30 V
• Low Supply Current 300 µA
• Low Input Bias Current 7 nA
• Low Input Offset Current ±1 nA
• Low Input Offset Voltage ±2 mV
• Response Time 440 ns (50-mV Overdrive)

• Input Common-Mode Voltage 0 to VS – 1.5 V 

The LM397/NOPB Applications

• A/D Converters
• Pulse, Square-Wave Generators
• Peak Detector

• Industrial Applications