参数资料
型号: AD7147WPACPZ-500R7
厂商: Analog Devices Inc
文件页数: 52/73页
文件大小: 0K
描述: IC CAP-TO-DGTL CONV PROG 24LFCSP
标准包装: 500
系列: CapTouch™
类型: 电容数字转换器
分辨率(位): 16 b
采样率(每秒): 250k
数据接口: 串行,SPI?
电压电源: 单电源
电源电压: 2.6 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-VFQFN 裸露焊盘,CSP
供应商设备封装: 24-LFCSP-VQ(4x4)
包装: 带卷 (TR)
Data Sheet
AD7147
Rev. D | Page 55 of 72
Table 36. STAGEx_AFE_OFFSET Register Description (x = 0 to 11)
Data Bit
Default
Value
Type
Name
Description
[5:0]
X
R/W
NEG_AFE_OFFSET
Negative AFE offset setting (20 pF range)
1 LSB value = 0.32 pF of offset
[6]
X
Unused
Set to 0
[7]
X
R/W
NEG_AFE_OFFSET_SWAP
Negative AFE offset swap control
0 = NEG_AFE_OFFSET applied to CDC negative input
1 = NEG_AFE_OFFSET applied to CDC positive input
[13:8]
X
R/W
POS_AFE_OFFSET
Positive AFE offset setting (20 pF range)
1 LSB value = 0.32 pF of offset
[14]
X
Unused
Set to 0
[15]
X
R/W
POS_AFE_OFFSET_SWAP
Positive AFE offset swap control
0 = POS_AFE_OFFSET applied to CDC positive input
1 = POS_AFE_OFFSET applied to CDC negative input
Table 37. STAGEx_SENSITIVITY Register Description (x = 0 to 11)
Data Bit
Default
Value
Type
Name
Description
[3:0]
X
R/W
NEG_THRESHOLD_SENSITIVITY
Negative threshold sensitivity control
0000 = 25%, 0001 = 29.73%, 0010 = 34.40%, 0011 = 39.08%
0100 = 43.79%, 0101 = 48.47%, 0110 = 53.15%
0111 = 57.83%, 1000 = 62.51%, 1001 = 67.22%
1010 = 71.90%, 1011 = 76.58%, 1100 = 81.28%
1101 = 85.96%, 1110 = 90.64%, 1111 = 95.32%
[6:4]
X
R/W
NEG_PEAK_DETECT
Negative peak detect setting
000 = 40% level, 001 = 50% level, 010 = 60% level
011 = 70% level, 100 = 80% level, 101 = 90% level
[7]
X
R/W
Unused
Set to 0
[11:8]
X
R/W
POS_THRESHOLD_SENSITIVITY
Positive threshold sensitivity control
0000 = 25%, 0001 = 29.73%, 0010 = 34.40%, 0011 = 39.08%
0100 = 43.79%, 0101 = 48.47%, 0110 = 53.15%
0111 = 57.83%, 1000 = 62.51%, 1001 = 67.22%
1010 = 71.90%, 1011 = 76.58%, 1100 = 81.28%
1101 = 85.96%, 1110 = 90.64%, 1111 = 95.32%
[14:12]
X
R/W
POS_PEAK_DETECT
Positive peak detect setting
000 = 40% level, 001 = 50% level, 010 = 60% level
011 = 70% level, 100 = 80% level, 101 = 90% level
[15]
X
R/W
Unused
Set to 0
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