EVAL-AD7147EBZ Analog Devices Inc, EVAL-AD7147EBZ Datasheet - Page 54

• Manufacturer Part Number: EVAL-AD7147EBZ
• Description: BOARD EVAL FOR AD7147ACPZ
• Manufacturer: Analog Devices Inc
• Series: CapTouch™r

Specifications of EVAL-AD7147EBZ

• Sensor Type: Touch, Capacitive
• Interface: SPI Serial
• Voltage - Supply: 2.6 V ~ 3.6 V
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: AD7147
• Silicon Manufacturer: Analog Devices
• Application Sub Type: CapTouch Controller
• Kit Application Type: Data Converter
• Silicon Core Number: AD7147
• Kit Contents: CapTouch Evaluation Board, USB Cable
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Sensing Range: -
• Lead Free Status / Rohs Status: Compliant

AD7147
Table 36. STAGEx_AFE_OFFSET Register Description (x = 0 to 11)
Data Bit
[5:0]
[6]
[7]
[13:8]
[14]
[15]
Table 37. STAGEx_SENSITIVITY Register Description (x = 0 to 11)
Data Bit
[3:0]
[6:4]
[7]
[11:8]
[14:12]
[15]
Default
Value
X
X
X
X
X
X
Default
Value
X
X
X
X
X
X
Type
R/W
R/W
R/W
R/W
Type
R/W
R/W
R/W
R/W
R/W
R/W
NEG_AFE_OFFSET
Unused
NEG_AFE_OFFSET_SWAP
POS_AFE_OFFSET
Unused
POS_AFE_OFFSET_SWAP
Unused
POS_THRESHOLD_SENSITIVITY
POS_PEAK_DETECT
Unused
Name
Name
NEG_THRESHOLD_SENSITIVITY
NEG_PEAK_DETECT
Rev. B | Page 54 of 72
Description
Negative AFE offset setting (20 pF range)
1 LSB value = 0.32 pF of offset
Set to 0
Negative AFE offset swap control
0 = NEG_AFE_OFFSET applied to CDC negative input
1 = NEG_AFE_OFFSET applied to CDC positive input
Positive AFE offset setting (20 pF range)
1 LSB value = 0.32 pF of offset
Set to 0
Positive AFE offset swap control
0 = POS_AFE_OFFSET applied to CDC positive input
1 = POS_AFE_OFFSET applied to CDC negative input
Description
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%
Negative peak detect setting
000 = 40% level, 001 = 50% level, 010 = 60% level
011 = 70% level, 100 = 80% level, 101 = 90% level
Set to 0
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%
Positive peak detect setting
000 = 40% level, 001 = 50% level, 010 = 60% level
011 = 70% level, 100 = 80% level, 101 = 90% level
Set to 0