10 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.

10.1 Application Information

This device is a natural fit for many precision applications and it can be connected to system components

in various ways and thus there are many situations that this data sheet can not characterize in detail. Basic

applications include positive/negative voltage reference and data acquisition systems. The table below shows

the typical applications of REF70 and its companion data converters.

APPLICATION

DATA CONVERTER

Precision Data Acquisition

ADS124S08, ADS8900B, ADS1278, ADS1262, DAC80501,

DAC8562

Industrial Instrumentation

ADS127L01, ADS8699, ADS1256, ADS1251, DAC9881, DAC8811,

DAC1220, DAC80508

Semiconductor Test

ADS8598H, ADS131M08, ADS8686S, ADS8881, DAC11001A,

DAC91001A, DAC7744

Power Monitoring, PLC Analog I/O

ADS131E04, ADS131A02,

Field Transmitters

ADS1247, ADS1220

10.2 Typical Applications

10.2.1 Typical Application: Basic Voltage Reference Connection

The circuit shown in Figure 10-1 shows the basic configuration for the REF70 references. Connect bypass

capacitors according to the guidelines in Section 10.2.1.2.1.

REF7025

ADS124S08

OPA2320

AIN0

AIN1

REFN0

Copyright © 2020, Texas Instruments Incorporated

REFP0

AVDD

AVSS

AVDD

GND

OUTS

OUTF

VIN EN

AVDD

OPA2320

AVDD

AVDD

AIN

Figure 10-1. Basic Reference Connection

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REF70

SNAS781E – OCTOBER 2020 – REVISED JULY 2022

Copyright © 2022 Texas Instruments Incorporated

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