AD7150

Data Sheet

Rev. A | Page 6 of 28

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

GND 1

VDD 2

CIN2 3

CIN1 4

EXC2 5

SDA

10

SCL

9

OUT2

8

OUT1

7

EXC1

6

AD7150

TOP VIEW

(Not to Scale)

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

CIN2

CDC Capacitive Input Channel 2. The measured capacitance (sensor) is connected between the EXC2 pin and

the CIN2 pin. If not used, this pin can be left open circuit or connected to GND.

4

CIN1

CDC Capacitive Input Channel 1. The measured capacitance (sensor) is connected between the EXC1 pin and

the CIN1 pin. If not used, this pin can be left open circuit or connected to GND.

5

EXC2

CDC Excitation Output Channel 2. The measured capacitance is connected between the EXC2 pin and the

CIN2 pin. If not used, this pin should be left as an open circuit.

6

EXC1

CDC Excitation Output Channel 1. The measured capacitance is connected between the EXC1 pin and the

CIN1 pin. If not used, this pin should be left as an open circuit.

7

OUT1

Logic Output Channel 1. A high level on this output indicates proximity detected on CIN1.

8

OUT2

Logic Output Channel 2. A high level on this output indicates proximity detected on CIN2.

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.