+

±

IN+

IN±

REF2

REF1

VS

GND

OUT

VS

REF5025

2.5-V

Reference

Copyright © 2016, Texas Instruments Incorporated

Figure 8-6. Mid-External Reference Output

8.4.3.4 Output Set Using Resistor Divider

The INA241x REF1 and REF2 pins allow for the midpoint of the output voltage to be adjusted for system

circuitry connections to analog to digital converters (ADCs) or other amplifiers. The REF pins are designed to

be connected directly to supply, ground, or a low-impedance reference voltage. The REF pins can be connected

together and biased using a resistor divider to achieve a custom output voltage. If the amplifier is used in this

configuration, as shown in Figure 8-7, use the output as a differential signal with respect to the resistor divider

voltage. Use of the amplifier output as a single-ended signal in this configuration is not recommended because

the internal impedance shifts can adversely affect device performance specifications.

+

±

IN+

IN±

REF2

REF1

VS

GND

OUT

VS

TO ADC±

TO ADC+

R1

R2

Figure 8-7. Setting the Reference Using a Resistor Divider

INA241A, INA241B

SBOSA30 – MARCH 2022

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