Datasheet

AD7151
Rev. 0 | Page 6 of 28
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
G
ND
1
VDD 2
NC 3
CIN
4
NC
NC = NO CONNECT
5
SDA
10
SCL9
NC8
OUT
7
EXC6
AD7151
TOP VIEW
(Not to Scale)
07086-003
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1 GND Ground Pin.
2 VDD
Power Supply Voltage. This pin should be decoupled to GND using a low impedance capacitor, for example,
0.1 μF X7R multilayer ceramic.
3 NC This pin should be left as an open circuit or connected to GND.
4 CIN CDC Capacitive Input. The measured capacitance (sensor) is connected between the EXC pin and the CIN pin.
5 NC This pin should be left as an open circuit.
6 EXC CDC Excitation Output. The measured capacitance is connected between the EXC pin and the CIN pin.
7 OUT Logic Output. High level on this output indicates proximity detected on the capacitive input.
8 NC This pin should be left as an open circuit.
9 SCL
Serial Interface Clock Input. Connects to the master clock line. Requires a pull-up resistor if not provided
elsewhere in the system.
10 SDA
Serial Interface Bidirectional Data. Connects to the master data line. Requires a pull-up resistor if not provided
elsewhere in the system.