EVAL-AD7324CB AD [Analog Devices], EVAL-AD7324CB Datasheet - Page 25

• Manufacturer Part Number: EVAL-AD7324CB
• Description: 4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
• Manufacturer: AD [Analog Devices]

SEQUENCE REGISTER
The sequence register on the AD7324 is a 4-bit, write-only register. Each of the four analog input channels has one corresponding bit in
the sequence register. To select a channel for inclusion in the sequence, set the corresponding channel bit to 1 in the sequence register.
MSB
16
Write
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
16
Write
Table 13. Range Selection
V
0
0
1
1
IN
xA
15
Register Select 1
15
Register Select 1
V
0
1
0
1
IN
xB
14
Register Select 2
Description
This combination selects the ±10 V input range on V
This combination selects the ±5 V input range on V
This combination selects the ±2.5 V input range on V
This combination selects the 0 V to +10 V input range on V
14
Register Select 2
13
V
IN
13
V
0A
IN
0
12
V
IN
12
V
0B
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IN
1
11
V
IN
11
V
1A
IN
2
10
V
10
V
IN
IN
1B
3
IN
IN
x.
IN
x.
x.
9
V
9
0
IN
2A
IN
x.
8
V
8
0
IN
2B
7
0
7
V
IN
3A
6
0
6
V
IN
3B
5
0
5
0
4
0
4
0
3
0
3
0
AD7324
2
0
2
0
LSB
1
0
LSB
1
0