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AD7142 Datasheet(PDF) 37 Page - Analog Devices

Part # AD7142
Description  Programmable Capacitance-to-Digital Converter with Environmental Compensation
PDF  68 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7142 Datasheet(HTML) 37 Page - Analog Devices

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AD7142
Rev. 0 | Page 37 of 68
TYPICAL APPLICATION CIRCUITS
VDRIVE
2.2kΩ
8-WAY
SWITCH
HOST
WITH
SPI
INTERFACE
SS
SCK
MOSI
MISO
INT
VHOST
AVCC, DVCC
1.8V
AVCC, DVCC 2.7V TO 3.6V
0.1µF
1µF TO 10µF
(OPTIONAL)
24
23
22
21
20
19
18
17
10nF
CIN3
CIN4
CIN5
CIN6
CIN7
CIN8
CIN9
CIN10
CS
SDI
SCLK
VDRIVE
DVCC
DGND1
SDO
DGND2
AD7142
1
2
3
4
5
6
7
8
Figure 55. Typical Application Circuit with SPI Interface
2.2kΩ
SCK
SDO
INT
CIN3
CIN4
CIN5
CIN6
CIN7
CIN8
CIN9
CIN10
ADD1
ADD0
SCLK
VDRIVE
DVCC
DGND1
SDA
DGND2
AVCC, DVCC
AVCC, DVCC 2.7V TO 3.6V
0.1µF
1µF TO 10µF
(OPTIONAL)
AD7142-1
VDRIVE
VDRIVE
2.2kΩ
SLIDER
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
10nF
BUTTONS
HOST
WITH
I2C
INTERFACE
Figure 56. Typical Application Circuit with I2C Interface



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