12-Bit

ADC

Other INA168-Q1s

INA168-Q1

INA168-Q1

Digital I/O on the ADS7870 provides power to select

the desired INA168-Q1. Diodes prevent output current of

the

INA168-Q1 from flowing into the

on

off

INA168-Q1.

–

–

Copyright © 2016, Texas Instruments Incorporated

Mux

5 V

18

INA138-Q1, INA168-Q1

SGLS174J – SEPTEMBER 2003 – REVISED AUGUST 2018

www.ti.com

Product Folder Links: INA138-Q1 INA168-Q1

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Copyright © 2003–2018, Texas Instruments Incorporated

8.2.6 Multiplexed Measurement Using Logic Signal for Power

Measure multiple loads as shown in Figure 18. In this configuration, each INA138-Q1 or INA168-Q1 device is

powered by the digital I/O from the ADS7870. Multiplexing is achieved by switching on or off each desired I/O.

Figure 18. Multiplexed Measurement Using Logic Signal for Power