AD7147AACBZ-RL Analog Devices Inc, AD7147AACBZ-RL Datasheet - Page 41

• Manufacturer Part Number: AD7147AACBZ-RL
• Description: CAPACITANCE TO DIGITAL CONVERTER
• Manufacturer: Analog Devices Inc
• Series: CapTouch™r
• Type: Capacitive Sensor Controllerr

Specifications of AD7147AACBZ-RL

• Resolution (bits): 16 b
• Data Interface: Serial, SPI™
• Voltage Supply Source: Single Supply
• Voltage - Supply: 2.6 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 25-WLCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sampling Rate (per Second): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DETAILED REGISTER DESCRIPTIONS
BANK 1 REGISTERS
All addresses and default values are expressed in hexadecimal.
Table 21. PWR_CONTROL Register
Address
0x000
Data Bit
[1:0]
[3:2]
[7:4]
[9:8]
[10]
[11]
[12]
[13]
[15:14]
Default
Value
0
0
0
0
0
0
0
0
0
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
POWER_MODE
LP_CONV_DELAY
SEQUENCE_STAGE_NUM
DECIMATION
SW_RESET
INT_POL
EXT_SOURCE
Unused
CDC_BIAS
Rev. B | Page 41 of 68
Operating modes
Low power mode conversion delay
ADC decimation factor
Software reset control (self-clearing)
CDC bias current control
Description
00 = full power mode (normal operation, CDC
conversions approximately every 36 ms)
01 = full shutdown mode (no CDC conversions)
10 = low power mode (automatic wake-up operation)
11 = full shutdown mode (no CDC conversions)
00 = 200 ms
01 = 400 ms
10 = 600 ms
11 = 800 ms
Number of stages in sequence (N + 1)
0000 = 1 conversion stage in sequence
0001 = 2 conversion stages in sequence
…
Maximum value = 1011 = 12 conversion stages per
sequence
00 = decimate by 256
01 = decimate by 128
10 = decimate by 64
11 = decimate by 64
1 = resets all registers to default values
Interrupt polarity control
0 = active low
1 = active high
Excitation source control
0 = enable excitation source to CINx pins
1 = disable excitation source to CINx pins
Set to 0
00 = normal operation
01 = normal operation + 20%
10 = normal operation + 35%
11 = normal operation + 50%
AD7147A