MarioE

AD7794/95 and AD779x Instrumentation FAQ

Discussion created by MarioE on Mar 29, 2016

A question to the paragraph:

What is the sequence of events when switching between channels for the AD779x?

.....

Write 0x10 to communications register: This specifies that the next

operation is a write to the configuration register.

Write 0x0011 to configuration register: This configures the AD779x for the

above gain, polarity, and reference source and selects Channels AIN2(+) – AIN2(–).

Write 0x58 to the communications register: This specifies that the next

operation is a write of the data register.

....

This means: Write to the Config register the desired channel and then my question:

Write 0x58 to the communications register: This specifies that the next

operation is a write of the data register

 

Why a write to the data register ? For what purpose ? a write ????

and if a write is necessary, write what ??

 

Mario

Outcomes