AD7322BRU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

MFG CO.

AD7322BRU

Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC

Atmel Corporation 

AD7322

Preliminary Technical Data

RANGE REGISTER

The Range register to used to select one Analog input Range per Analog input channel. It is a 4-Bit write only Register, with two dedicated

Range bits for each of the two Analog Input Channels. There are four Analog input Ranges to choose from, ±10V, ±5V, ±2.5V, 0 to 10V. A

write to the Range Register is selected by setting the Write bit to 1 and the Register Select bit to 1. Once the initial write to the Range

Register occurs the AD7322 automatically configures the two Analog inputs to the appropriate range, as indicated by the Range register,

each time any one of these analog input channels is selected. The ±10V input Range is selected by default on each analog input channel.

See Table 12.

Table 12. Range Register

Write

Register

Select 1

Register

Select 2

Vin0A

Vin0B

Vin1A

Vin1B

VinXA VinXB Description

0

0

This combination selects the ± 10V

Input Range on Analog Input X.

0

1

This combination selects the ±5V Input

Range on Analog Input X.

1

0

This combination selects the ± 2.5V

Input Range on Analog Input X.

1

1

This combination selects the 0 to 10V

Input Range on Analog Input X.

Rev. PrE | Page 14 of 18

Share Link: