OPA348-Q1 Datasheet, PDF (9/30 Pages) Texas Instruments – OPAx348-Q1 1-MHz 45-μA CMOS Rail-to-Rail Operational Amplifier

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7 Detailed Description
OPA348-Q1, OPA2348-Q1, OPA4348-Q1
SBOS465B – JANUARY 2009 – REVISED DECEMBER 2014
7.1 Overview
The OPAx348-Q1 family of devices is a low-power, rail-to-rail input and output operational amplifier. These
devices operate from 1.8 V to 5.5 V, are unity-gain stable, and are suitable for a wide range of general-purpose
applications. The class AB output stage is capable of driving ≤ 10-kΩ loads connected to any point between V+
and ground. The input common-mode voltage range includes both rails and allows the OPAx348-Q1 family of
devices to be used in virtually any single-supply application. Rail-to-rail input and output swing significantly
increases dynamic range, especially in low-supply applications, and makes them ideal for driving sampling
analog-to-digital converters (ADCs).
7.2 Functional Block Diagram
OPA348-Q1
V+
Reference
Current
V_IN+
V_IN±
VBIAS1
Class AB
Control Circuitry
V_o
VBIAS2
V±
(Ground)
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Product Folder Links: OPA348-Q1 OPA2348-Q1 OPA4348-Q1