OPA376-Q1_016 Datasheet, PDF (17/39 Pages) Texas Instruments – Low-Noise, Low Quiescent Current, Precision Operational Amplifier e-trim Series

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8 Application and Implementation
OPA376-Q1, OPA2376-Q1, OPA4376-Q1
SBOS549B – APRIL 2011 – REVISED JUNE 2016
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The OPAx376-Q1 family of operational amplifiers is built using e-trim, a proprietary technique in which offset
voltage is adjusted during the final steps of manufacturing. This technique compensates for performance shifts
that can occur during the molding process. Through e-trim, the OPAx376-Q1 family delivers excellent offset
voltage (5 μV, typical). Additionally, the amplifier boasts a fast slew rate, low drift, low noise, and excellent PSRR
and A_OL. These 5.5-MHz CMOS op amps operate on 760 μA (typical) quiescent current.
8.1.1 Basic Amplifier Configurations
The OPA376-Q1 family is unity-gain stable. It does not exhibit output phase inversion when the input is
overdriven. A typical single-supply connection is shown in Figure 25. The OPA376-Q1 is configured as a basic
inverting amplifier with a gain of –10 V/V. This single-supply connection has an output centered on the common-
mode voltage, V_CM. For the circuit shown in Figure 25, this voltage is 2.5 V, but may be any value within the
common-mode input voltage range.
R₂
10kW
+5V
R₁
1kW
V_IN
C₁
100nF
OPA376
V_OUT
V_CM = 2.5V
Figure 25. Basic Single-Supply Connection
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Product Folder Links: OPA376-Q1 OPA2376-Q1 OPA4376-Q1