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. Customers should validate and test their design

implementation to confirm system functionality.

10.1 Application Information

As this device has many applications and setups, there are many situations that this datasheet can not

characterize in detail. Basic applications include positive/negative voltage reference and data acquisition

systems. The table below shows the typical application of REF70 and its companion data converters.

Application

Data Converter

Precision Data Acquisition

ADS8900B, ADS1278, ADS1262, DAC80501, DAC8562

Industrial Instrumentation

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

DAC1220, DAC80508

Semiconductor Test

ADS8598H, ADS131M08, ADS8686S, ADS8881, DAC11001A,

DAC7744,

Power Monitoring, PLC Analog I/O

ADS131E04, ADS131A02,

Field Transmitters

ADS1247, ADS1220

10.2 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 10.2.2.1.

REF70

ADS124S08

OUT

OPS2320

AIN+

AIN-

VIN

VIN

REFIN

+

+

10µF

Figure 10-1. Basic Reference Connection

10.2.1 Design Requirements

A detailed design procedure is based on a design example. For this design example, use the parameters listed

in Table 10-1 as the input parameters.

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REF70

SNAS781 – OCTOBER 2020

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