Datasheet

UG-222 Evaluation Board User Guide
Rev. 0 | Page 8 of 20
ADC SETUP
09551-008
Figure 8. ADC Setup Window
The ADC Setup window gives you access to the AD7190/
AD7192 registers. You can write to the registers and read from
the registers. This window operates even when an AD7190/
AD7192 evaluation board is not connected to the software. It
operates as an AD7190/AD7192 configuration tool.
ADC Reset
The ADC is reset to its default condition using this button.
ADC Read
Click this button to read the values of the registers on the
AD7190/AD7192. The ADC Setup window displays the
hexadecimal values returned from the AD7190/AD7192. The
other sections of the ADC Setup window are also updated to
reflect the AD7190/AD7192 configuration.
ADC Write
Click this button to write the information displayed in the
Registers HEX window to the AD7190/AD7192.
Analog Inputs
Select the analog input channels using the Channel Selection
buttons. The gain, polarity, and chopping can also be selected.
The analog inputs can be buffered or unbuffered using the
Buffer button. Finally, the Diagnostic button enables/disables
the burnout currents.
Digital Filter
The output data rate, first filter notch, the order of the sinc
filter, zero latency, and enabling/disabling the REJ60 bit are
programmed using these buttons. You can enter the frequency
of the first filter notch and the software calculates the value to
be written to Bits FS[9:0] of the mode register. Alternatively,
you can enter the FS[9:0] value in decimal and the software
calculates the first filter notch.
The value to be written to the AD7190/AD7192 is displayed in
the Registers HEX section.
Voltage Reference
The reference source and reference value are programmed in
this section. You can select REFIN1 or REFIN2, enable or
disable the reference detect function, and set the voltage of the
reference.
When the reference setup is changed, the changes to the
configuration register are shown in the Registers HEX section.
Clock Configuration
The clock to be used by the AD7190/AD7192 is selected in this
section. When an external master clock is selected, the clock
frequency must be entered in the MHz box.
Digital Outputs
The four digital outputs, P0 to P3, are programmed and
enabled/disabled in this section. The low-side power switch is
also controlled in this section using the Power Switch button.
Mode of Operation
This button allows you to select various modes of operation,
including continuous conversion, single cycle conversion, and
calibration.