Datasheet

AD7324 Data Sheet
Rev. B | Page 24 of 36
RANGE REGISTER
The range register is used to select one analog input range per analog input channel. It is an 8-bit, write-only register with two dedicated
range bits for each of the analog input channels from Channel 0 to Channel 3. There are four analog input ranges, ±10 V, ±5 V, ±2.5 V, and
0 V to +10 V. A write to the range register is selected by setting the write bit to 1 and the register select bits to 0 and 1. After the initial write to
the range register occurs, each time an analog input is selected, the AD7324 automatically configures the analog input to the appropriate
range, as indicated by the range register. The ±10 V input range is selected by default on each analog input channel (see Table 13).
MSB LSB
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Write Register Select 1 Register Select 2 V
IN
0A V
IN
0B V
IN
1A V
IN
1B V
IN
2A V
IN
2B V
IN
3A V
IN
3B 0 0 0 0 0
Table 13. Range Selection
V
IN
xA V
IN
xB Description
0 0 This combination selects the ±10 V input range on V
IN
x.
0 1 This combination selects the ±5 V input range on V
IN
x.
1 0 This combination selects the ±2.5 V input range on V
IN
x.
1 1 This combination selects the 0 V to +10 V input range on V
IN
x.