AD7143 Analog Devices, AD7143 Datasheet - Page 7

• Manufacturer Part Number: AD7143
• Description: Programmable Controller for Capacitance Touch Sensors
• Manufacturer: Analog Devices

Specifications of AD7143

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

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Table 5. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Mnemonic
CIN2
CIN3
CIN4
CIN5
CIN6
CIN7
CSHIELD
SRC
VCC
GND
VDRIVE
SDA
SCLK
INT
CIN0
CIN1
Capacitance Sensor Input.
Capacitance Sensor Input.
Description
Capacitance Sensor Input.
Capacitance Sensor Input.
Capacitance Sensor Input.
Capacitance Sensor Input.
Capacitance Sensor Input.
Capacitance Sensor Input.
CDC Shield Potential Output. Requires 10 nF capacitor to ground.
CDC Excitation Source Output.
CDC Supply Voltage.
Ground Reference Point for All CDC Circuitry. Tie to ground plane.
I
I
Clock Input for Serial Interface. SCLK requires pull-up resistor.
General-Purpose Open-Drain Interrupt Output. Programmable polarity; requires pull-up resistor.
2
2
C Serial Interface Operating Voltage
C Serial Data Input/Output. SDA requires pull-up resistor.
CIN2
CIN3
CIN4
CIN5
Figure 3. Pin Configuration
1
2
3
4
Rev. 0 | Page 7 of 56
(Not to Scale)
AD7143
TOP VIEW
PIN 1
INDICATOR
12 SDA
11 VDRIVE
10 GND
9 VCC
AD7143