参数资料
型号: EVAL-AD7321CBZ
厂商: Analog Devices Inc
文件页数: 19/37页
文件大小: 0K
描述: BOARD EVALUATION FOR AD7321
标准包装: 1
系列: iCMOS®
ADC 的数量: 1
位数: 12
采样率(每秒): 500k
数据接口: 串行
输入范围: ±10 V
在以下条件下的电源(标准): 17mW @ 500kSPS
工作温度: -40°C ~ 85°C
已用 IC / 零件: AD7321
已供物品: 板,CD
相关产品: AD7321BRUZ-REEL-ND - IC ADC 12BIT+SAR 2CHAN 14-TSSOP
AD7321BRUZ-REEL7-ND - IC ADC 12BIT+ SAR 2CHAN 14TSSOP
AD7321BRUZ-ND - IC ADC 12BIT+ SAR 2CHAN 14TSSOP
Data Sheet
AD7321
Rev. B | Page 25 of 36
RANGE REGISTER
The range register is used to select one analog input range per analog input channel and to set the ranges for Channel 0 and Channel 1. It
is a 6-bit, write-only register with two dedicated range bits for each of the analog input channels, Channel 0 and Channel 1. 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, the ZERO
bit to 0, and the register select bit to 1. After the initial write to the range register occurs, each time an analog input is selected, the
AD7321 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
ZERO
Register Select
VIN0A
VIN0B
0
VIN1A
VIN1B
0
Table 13. Range Selection
VINxA
VINxB
Description
0
This combination selects the ±10 V input range on VINx.
0
1
This combination selects the ±5 V input range on VINx.
1
0
This combination selects the ±2.5 V input range on VINx.
1
This combination selects the 0 V to +10 V input range on VINx.
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