AD7328BRUZ Analog Devices Inc, AD7328BRUZ Datasheet - Page 24

• Manufacturer Part Number: AD7328BRUZ
• Description: IC ADC 12BIT+ SAR 8CHAN 20TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD7328BRUZ

• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Design Resources: Using AD7328 in Appls with Single-Ended Industrial-Level Signals (CN0047)
• Number Of Bits: 12
• Sampling Rate (per Second): 1M
• Number Of Converters: 1
• Power Dissipation (max): 30mW
• Voltage Supply Source: Dual ±
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Resolution (bits): 13bit
• Sampling Rate: 1MSPS
• Input Channel Type: Pseudo Differential, Single Ended
• Supply Current: 900µA
• Digital Ic Case Style: TSSOP
• No. Of Pins: 20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7328CBZ - BOARD EVALUATION FOR AD7328
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

AD7328
SEQUENCE REGISTER
The sequence register on the AD7328 is an 8-bit, write-only register. Each of the eight 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 REGISTERS
The range registers are used to select one analog input range per analog input channel. Range Register 1 is used to set the ranges for
Channel 0 to Channel 3. 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 Range Register 1 is selected by setting the
write bit to 1 and the range select bits to 0 and 1, respectively. After the initial write to Range Register 1 occurs, each time an analog input
is selected, the AD7328 automatically configures the analog input to the appropriate range, as indicated by Range Register 1. The ±10 V
input range is selected by default on each analog input channel (see Table 13).
MSB
16
Write
Range Register 2 is used to set the ranges for Channel 4 to Channel 7. It is an 8-bit, write-only register with two dedicated range bits for
each of the analog input channels from Channel 4 to Channel 7. There are four analog input ranges, ±10 V, ±5 V, ±2.5 V, and 0 V to +10 V.
After the initial write to Range Register 2 occurs, each time an analog input is selected, the AD7328 automatically configures the analog
input to the appropriate range, as indicated by Range Register 2. 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
15
Register Select 1
V
0
1
0
1
IN
xB
14
Register Select 2
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
13
V
IN
IN
13
0A
4A
V
IN
0
12
V
12
V
IN
IN
12
V
0B
4B
Rev. B | Page 24 of 36
IN
1
11
V
11
V
IN
IN
11
V
1A
5A
IN
2
10
V
10
V
10
V
IN
IN
IN
1B
5B
3
IN
IN
x.
IN
x.
x.
9
V
9
V
9
V
IN
IN
IN
2A
6A
4
IN
x.
8
V
8
V
8
V
IN
IN
IN
2B
6B
5
7
V
7
V
7
V
IN
IN
IN
6
3A
7A
6
V
6
V
6
V
IN
IN
IN
7
3B
7B
5
0
5
0
5
0
4
0
4
0
4
0
3
0
3
0
3
0
2
0
2
0
2
0
LSB
1
0
LSB
1
0
LSB
1
0