7 Application and Implementation

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, as well as validating and testing their design

implementation to confirm system functionality.

7.1 Application Information

The OPAx310-Q1 family of rail-to-rail input and output operational amplifiers is specifically designed for high

output current applications. The devices operate from 1.5V to 5.5V, are unity-gain stable, and are also an

excellent choice for a wide range of general-purpose applications. The class AB output stage is capable of

driving small resistive loads connected to any point between V+ and V– as long as the device is not forced into

short circuit mode or thermal shutdown mode. The input common-mode voltage range includes both rails and

allows the OPAx310-Q1 series to be used in many single-supply or dual supply configurations.

7.2 Typical Application

7.2.1 OPAx310-Q1 Low-Side, Current Sensing Application

Figure 7-1 shows the OPAx310-Q1 configured in a low-side current sensing application.

I

LOAD

Z

LOAD

V

BUS

V

SHUNT

R

SHUNT

0.1 Ÿ

R

F

57.6 NŸ

R

G

1.2 NŸ

V

OUT

5 V

+

í

Device

+

í

Figure 7-1. OPAx310-Q1 in a Low-Side, Current-Sensing Application

www.ti.com

OPA310-Q1

SBOSAI0A – DECEMBER 2023 – REVISED MAY 2024

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Product Folder Links: OPA310-Q1