描述 Description

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: 2.0 mV (max) LM393A 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

簡(jiǎn)介

LM293屬于集成電路（IC）的穩(wěn)壓器-線性。由制造生產(chǎn)的LM293穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無(wú)論負(fù)載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個(gè)最小量，并且在工作時(shí)會(huì)將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對(duì)于大多數(shù)應(yīng)用而言，雖然這種穩(wěn)壓器的效率低于開(kāi)關(guān)模式的穩(wěn)壓器，但它們通常更適合對(duì)噪聲高度敏感的應(yīng)用。