轨到轨输出和超越摆幅输入：微功率运算放大器的黑幕

摘要：一个低功率/低电压运算放大器的输入电压范围在什么时候成为重要的呢？电池供电的手持系统设计时，你应该选择什么运算放大器？
Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS

Keywords: CMVR, CMRR, input voltage range, rail to rail inputs, beyond the rail inputs, op amps, low voltage Mar 23, 2001
op amp, low voltage amplfiers

APPLICATION NOTE 741
Rail-to-Rail Outputs and Beyond-the-Rails Inputs: The Inside Story
on Micropower Op Amps

Abstract: When does the input voltage range of a low power/low voltage op amp become important? What
operational amplifier should you choose when designing a battery powered handheld system?


To optimize performance in today's low-power handheld systems, designers must pay increasing attention to the
common-mode input voltage range, output voltage swing, noise, and supply current of single-supply micropower
op amps. Differential op amps usually include the negative rail in