AD7192 datasheet(31/41 Pages) AD

31 / 41 page

AD7192

Rev. A | Page 30 of 40

Continuous Conversion Mode

Continuous conversion is the default power-up mode. The

AD7192 converts continuously, and the RDY bit in the status

low, the DOUT/RDY line also goes low when a conversion is

completed. To read a conversion, the user writes to the

communications register, indicating that the next operation is a

read of the data register. When the data-word has been read

from the data register, DOUT/RDY goes high. The user can

read this register additional times, if required. However, the

user must ensure that the data register is not being accessed at

the completion of the next conversion or else the new conversion

word is lost.

When several channels are enabled, the ADC continuously

loops through the enabled channels, performing one conversion

on each channel per loop. The data register is updated as soon

as each conversion is available. The DOUT/RDY pin pulses low

each time a conversion is available. The user can then read the

conversion while the ADC converts on the next enabled channel.

If the DAT_STA bit in the mode register is set to 1, the contents

of the status register are output along with the conversion each

time that the data read is performed. The status register

indicates the channel to which the conversion corresponds.

DIN

SCLK

DOUT/RDY

0x58

DATA

Figure 30. Continuous Conversion

AD7192 Datasheet(PDF) 31 Page - Analog Devices