ADS131E04IPAG datasheet(49/76 Pages) TI2

49 / 76 page

ADS131E04, ADS131E06, ADS131E08

www.ti.com

SBAS561C – JUNE 2012 – REVISED JANUARY 2017

Product Folder Links: ADS131E04 ADS131E06 ADS131E08

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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

10.1.1 Unused Inputs and Outputs

Power down unused analog inputs and connect them directly to AVDD.

Power down the Bias amplifier if unused and float OPAMPOUT and OPAMPN. Tie OPAMPP directly to AVSS or

leave floating if unused.

Tie TESTN and TESTP to AVDD through individual 10-kΩ resistors or leave them floating if unused and the

internal test signal is not used. If the internal test signal is used, leave TESTP and TESTN floating. If an external

test signal is used, connect to external test circuitry.

Do not float unused digital inputs because excessive power-supply leakage current might result. Set the two-

state mode setting pins high to DVDD or low to DGND through

≥10-kΩ resistors.

Pull DRDY to supply using weak pull-up resistor if unused.

If not daisy-chaining devices, tie DAISYIN directly to DGND.

10.1.2 Setting the Device Up for Basic Data Capture

This section outlines the procedure to configure the device in a basic state and capture data. This procedure is

intended to put the device in a data sheet condition to check if the device is working properly in the user system.

It is recommended that this procedure be followed initially to get familiar with the device settings. When this

procedure is verified, the device can be configured as needed. For details on the timings for commands refer to

the appropriate sections in the data sheet. The flow chart of Figure 53 details the initial ADS131E0x configuration

and setup.

ADS131E04IPAG Datasheet(PDF) 49 Page - Texas Instruments