参数资料
型号: AD7322BRUZ-REEL
厂商: Analog Devices Inc
文件页数: 15/37页
文件大小: 0K
描述: IC ADC 12BIT+SAR 2CHAN 14-TSSOP
标准包装: 2,500
位数: 12
采样率(每秒): 1M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 30mW
电压电源: 双 ±
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 14-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 14-TSSOP
包装: 带卷 (TR)
输入数目和类型: 2 个单端,单极;2 个单端,双极;1 个差分,单极;1 个差分,双极
配用: EVAL-AD7322CBZ-ND - BOARD EVALUATION FOR AD7322
Data Sheet
AD7322
Rev. B | Page 21 of 36
REGISTERS
The AD7322 has two programmable registers, the control
register and the range register. These registers are write-only
registers.
ADDRESSING REGISTERS
A serial transfer on the AD7322 consists of 16 SCLK cycles. The
three MSBs on the DIN line during the 16 SCLK transfer are
decoded to determine which register is addressed. The three
MSBs consist of the write bit, zero bit, and register select bit.
The register select bit is used to determine which of the two on-
board registers is selected. The write bit determines if the data
on the DIN line following the register select bit loads into the
addressed register. If the write bit is 1, the bits are loaded into
the register addressed by the register select bits. If the write bit
is 0, the data on the DIN line does not load into any register.
The zero bit must always be set to 0.
Combinations of the write bit, the zero bit, and the register
select bit other than those specified in Table 8 access registers
for Analog Devices internal use only. Do not access these registers,
as doing so may lead to unspecified operation of the device.
Table 8. Decoding Register Select Bit and Write Bit
Write
Zero
Register Select
Comment
0
X
Data on the DIN line during this serial transfer is ignored. Register contents remain unchanged.
1
0
This combination selects the control register. The subsequent 12 bits are loaded into the control register.
1
0
1
This combination selects the range register. The subsequent six bits are loaded into the range register.
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