描述 Description

The LTC8391/8392 of single- and dual- channel operational amplifiers provides input?offset voltage correction for low offset (maximum ± 120 μV) and drift (maximum 0.5 μV/℃) through the use of proprietary techniques. Featuring rail-to-rail input and output swings,and low quiescent current (typical 28 μA at 5 V supply) combined with a wide bandwidth?of 330 kHz and very low noise (2 μVP-P at 0.1 to 10 Hz) makes this family very attractive for?a variety of battery-powered applications such as handsets, tablets, notebooks, and?portable medical devices. The low input bias current supports these amplifiers to be used?in applications with mega-ohm source impedances.



The LTC8391/8392 amplifiers are perfectly suited for applications that require precision?amplification of low level signals, in which error sources cannot be tolerated, even in?which high bandwidth and fast transition are needed. The rail-to-rail input and output?swings make both high-side and low-side sensing easy. The LTC8391/8392 amplifiers can?operate with a single supply voltage as low as 1.8V for 2-cell battery applications.



The LTC8391/8392 amplifers have enhanced EMI protection to minimize any?electromagnetic interference from external sources, and have high electro-static?discharge (ESD) protection (5-kV HBM). All models are specified over the extended

industrial temperature range of -40℃ to +125℃.

特性 Features

? DC Precision:
– ± 120 μV (maximum) VOS with a Drift of ± 0.5 μV/℃ (maximum)
– AVOL: 108 dB (minimum)
– PSRR: 105 dB (minimum)
– CMRR: 92 dB (minimum,)
– Vn: 2 μVPP (typical, f = 0.1 to 10 Hz)

應(yīng)用 Application

? Precision current sensing
? Battery-Powered Instruments:
– Consumer, Industrial, Medical, Notebooks