INA169-Q1

INA169-Q1

Other INA169-Q1s

1N4148

Digital I/O on the ADS7870 provides power to

select the desired INA169-Q1. Diodes prevent

output current of an

INA169-Q1 from flowing

on

into an

INA169-Q1.

off

REF

V+

V+

R

L

Serial

I/O

ADS7870

Clock

Divider

Oscillator

BUF

OUT

BUF

IN

REF

OUT

12-Bit

ADC

BUF

Mux

Digital

I/O

PGIA

5 V

17

INA139-Q1, INA169-Q1

www.ti.com

SGLS185F – SEPTEMBER 2003 – REVISED MAY 2016

Product Folder Links: INA139-Q1 INA169-Q1

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Copyright © 2003–2016, 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 INA1x9-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