LM2903屬于集成電路（IC）的比較器。由安森美半導體公司制造生產(chǎn)的LM2903比較器邏輯比較器系列產(chǎn)品用于根據(jù)以數(shù)字格式表示的信息比較結(jié)果來生成輸出；身份型比較器指示兩個輸入是否相同，幅度型比較器還指示兩個輸入不相同時哪個較大。它們不同于比較兩個模擬輸入幅度的器件，后者稱為線性比較器且單獨分類。

The LM393 series are dual independent precision voltage

comparators capable of single or split supply operation. These devices

are designed to permit a common mode range?to?ground level with

single supply operation. Input offset voltage specifications as low as

2.0 mV make this device an excellent selection for many applications

in consumer, automotive, and industrial electronics.

特性 Features

? Wide Single?Supply Range: 2.0 Vdc to 36 Vdc

? Split?Supply Range: ±1.0 Vdc to ±18 Vdc

? Very Low Current Drain Independent of Supply Voltage: 0.4 mA

? Low Input Bias Current: 25 nA

? Low Input Offset Current: 5.0 nA

? Low Input Offset Voltage: 5.0 mV (max) LM293/393

? Input Common Mode Range to Ground Level

? Differential Input Voltage Range Equal to Power Supply Voltage

? Output Voltage Compatible with DTL, ECL, TTL, MOS, and CMOS

Logic Levels

? ESD Clamps on the Inputs Increase the Ruggedness of the Device

without Affecting Performance

? NCV Prefix for Automotive and Other Applications Requiring

Unique Site and Control Change Requirements; AEC?Q100

Qualified and PPAP Capable

? These Devices are Pb?Free, Halogen Free/BFR Free and are RoHS

Compliant