OPA140_15 Datasheet, PDF (15/44 Pages) Texas Instruments – High-Precision, Low-Noise, Rail-to-Rail Output,11-MHz JFET Op Amp

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7 Detailed Description
OPA140, OPA2140, OPA4140
SBOS498B – JULY 2010 – REVISED NOVEMBER 2015
7.1 Overview
The OPAx140 family of operational amplifiers is a series of low-power JFET input amplifiers that feature superior
drift performance and low input bias current. The rail-to-rail output swing and input range that includes V– allow
designers to use the low-noise characteristics of JFET amplifiers while also interfacing to modern, single-supply,
precision analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). The OPAx140 series
achieves 11-MHz unity-gain bandwidth and 20-V/μs slew rate, and consumes only 1.8 mA (typical) of quiescent
current. These devices operate on a single 4.5-V to 36-V supply or dual ±2.25-V to ±18-V supplies.
The Functional Block Diagram section shows the simplified diagram of the OPAx140.
7.2 Functional Block Diagram
V+
Pre-Output Driver
IN-
IN+
V-
OUT
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