AD7147A Analog Devices, AD7147A Datasheet - Page 39

• Manufacturer Part Number: AD7147A
• Manufacturer: Analog Devices

Specifications of AD7147A

• Resolution (bits): 16bit
• # Chan: 13
• Sample Rate: 111SPS
• Interface: I²C/Ser 2-Wire,Ser,SPI
• Analog Input Type: Capacitive
• Ain Range: ± 8 pF (Delta C)
• Adc Architecture: Sigma-Delta
• Pkg Type: CSP

TYPICAL APPLICATION CIRCUITS
HOST WITH I
HOST WITH SPI
INTERFACE
INTERFACE
V
1.8V
HOST
V
SDO
CC
MOSI
MISO
SCK
SCK
INT
INT
2
SS
2.7V TO 3.6V
C
AD7147A
1μF TO 10μF
(OPTIONAL)
V
V
DRIVE
DRIVE
2.2kΩ
2.2kΩ
V
DRIVE
SCLK
SDO
INT
SDI
V
CS
A1
B1
C1
D1
E1
2.2kΩ
CC
2.7V TO 3.6V
V
V
AD7147A-1
GPIO
DRIVE
GND
DRIVE
V
TP
A2
B2
C2
D2
E2
CC
Figure 59. Typical Application Circuit with SPI Interface
2.2kΩ
1μF TO 10μF
Figure 60. Typical Application Circuit with I
(OPTIONAL)
BIAS
CIN1
CIN2
CIN4
CIN0
A3
B3
C3
D3
E3
100nF
AC
CIN10 CIN11
CIN3
CIN6
CIN8
SHIELD
A4
B4
C4
D4
E4
ADD0
ADD1
SCLK
SDA
INT
A1
B1
C1
D1
E1
Rev. B | Page 39 of 68
CIN12
CIN5
CIN7
CIN9
PLANE AROUND SENSORS
CONNECTED TO AC
A5
B5
C5
D5
E5
V
GPIO
GND
DRIVE
V
TP
A2
B2
C2
D2
E2
CC
BIAS
CIN1
CIN2
CIN4
CIN0
A3
B3
C3
D3
E3
100nF
AC
CIN10 CIN11
CIN3
CIN6
CIN8
SHIELD
A4
B4
C4
D4
E4
SHIELD
BUTTON
BUTTON
CIN12
CIN5
CIN7
CIN9
PLANE AROUND SENSORS
CONNECTED TO AC
A5
B5
C5
D5
E5
2
C Interface
BUTTON
BUTTON
BUTTON
SHIELD
SCROLL
SWITCH
WHEEL
2-WAY
SENSOR PCB
BUTTON
BUTTON
AD7147A