OPA316-Q1 Datasheet, PDF (18/39 Pages) Texas Instruments – 10-MHz, Rail-to-Rail Input/Output, Low-Voltage, 1.8-V CMOS Operational Amplifier

OPA316-Q1, OPA2316-Q1, OPA4316-Q1
SBOS841A – NOVEMBER 2016 – REVISED JANUARY 2017
7 Detailed Description
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7.1 Overview
The OPAx316-Q1 is a family of low-power, rail-to-rail input and output operational amplifiers. 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 less than or equal to 10-kΩ loads connected to any
point between V+ and ground. The input common-mode voltage range includes both rails and allows the
OPAx316-Q1 series 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 suitable for driving
sampling analog-to-digital converters (ADCs).
The OPAx316-Q1 family features 10-MHz bandwidth and 6-V/μs slew rate with only 400-μA supply current per
channel, providing good ac performance at very-low-power consumption. DC applications are well served with a
very-low input noise voltage of 11 nV/√Hz at 1 kHz, low input bias current (5 pA), and a typical input offset
voltage of 0.5-mV.
7.2 Functional Block Diagram
V+
Reference
Current
V_IN+
V_IN-
V_BIAS1
Class AB
Control
V_O
Circuitry
V_BIAS2
V-
(Ground)
7.3 Feature Description
7.3.1 Operating Voltage
The OPAx316-Q1 operational amplifiers are fully specified and ensured for operation from 1.8 V to 5.5 V. In
addition, many specifications apply from –40°C to +125°C. Parameters that vary significantly with operating
voltages or temperature are illustrated in the Typical Characteristics graphs.
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