AD7142ACPZ-1500RL7(RevA) 查看數據表（PDF） - Analog Devices
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AD7142ACPZ-1500RL7 Datasheet PDF : 73 Pages
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PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
AD7142
CIN3 1
CIN4 2
CIN5 3
CIN6 4
CIN7 5
CIN8 6
CIN9 7
CIN10 8
PIN 1
INDICATOR
AD7142
TOP VIEW
24 CS
23 SCLK
22 SDI
21 SDO
20 VDRIVE
19 DGND2
18 DGND1
17 DVCC
CIN3 1
CIN4 2
CIN5 3
CIN6 4
CIN7 5
CIN8 6
CIN9 7
CIN10 8
PIN 1
INDICATOR
AD7142-1
TOP VIEW
(Not to Scale)
24 ADD1
23 SCLK
22 ADD0
21 SDA
20 VDRIVE
19 DGND2
18 DGND1
17 DVCC
Figure 6. AD7142 Pin Configuration
Figure 7. AD7142-1 Pin Configuration
Table 7. Pin Function Descriptions
Pin No. Mnemonic Description
1
CIN3
Capacitance Sensor Input.
2
CIN4
Capacitance Sensor Input.
3
CIN5
Capacitance Sensor Input.
4
CIN6
Capacitance Sensor Input.
5
CIN7
Capacitance Sensor Input.
6
CIN8
Capacitance Sensor Input.
7
CIN9
Capacitance Sensor Input.
8
CIN10
Capacitance Sensor Input.
9
CIN11
Capacitance Sensor Input.
10
CIN12
Capacitance Sensor Input.
11
CIN13
Capacitance Sensor Input.
12
CSHIELD
CDC Shield Potential Output. Requires 10 nF capacitor to ground. Connect to external shield.
13
AVCC
CDC Supply Voltage.
14
AGND
Analog Ground Reference Point for All CDC Circuitry. Tie to analog ground plane.
15
SRC
CDC Excitation Source Output.
16
SRC
Inverted Excitation Source Output.
17
DVCC
Digital Core Supply Voltage.
18
DGND1
Digital Ground.
19
DGND2
Digital Ground.
20
VDRIVE
21
SDO
Serial Interface Operating Voltage Supply.
(AD7142) SPI Serial Data Output.
SDA
(AD7142-1) I2C Serial Data Input/Output. SDA requires pull-up resistor.
22
SDI
(AD7142) SPI Serial Data Input.
ADD0
(AD7142-1) I2C Address Bit 0.
23
SCLK
Clock Input for Serial Interface.
24
CS
(AD7142) SPI Chip Select Signal.
ADD1
(AD7142-1) I2C Address Bit 1.
25
INT
General-Purpose Open-Drain Interrupt Output. Programmable polarity; requires pull-up resistor.
26
GPIO
Programmable GPIO.
27
TEST
Factory Test Pin. Tie to ground.
28
VREF+
29
VREF−
30
CIN0
CDC Positive Reference Input. Normally tied to analog power.
CDC Negative Reference Input. Tie to analog ground.
Capacitance Sensor Input.
31
CIN1
Capacitance Sensor Input.
32
CIN2
Capacitance Sensor Input.
Rev. A | Page 9 of 72
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