AD7324 Analog Devices, AD7324 Datasheet - Page 24

• Manufacturer Part Number: AD7324
• Description: Software Selectable True Bipolar Input, 4-Channel, 12-Bit Plus Sign A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7324

• Resolution (bits): 13bit
• # Chan: 4
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni,SE-Uni
• Ain Range: Bip (Vref),Bip (Vref) x 2,Bip (Vref) x 4,Bip 10V,Bip 2.5V,Bip 5.0V,Uni (Vref) x 4,Uni 10V
• Adc Architecture: SAR
• Pkg Type: SOP

AD7324
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
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
13
V
IN
0A
12
V
IN
0B
Rev. A | Page 24 of 36
11
V
IN
1A
10
V
IN
1B
IN
IN
x.
IN
x.
x.
9
V
IN
2A
IN
x.
8
V
IN
2B
7
V
IN
3A
6
V
IN
3B
5
0
4
0
3
0
2
0
LSB
1
0