INMP421

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

Figure 3. Pin Configuration

TABLE 5. PIN FUNCTION DESCRIPTIONS

PIN

NAME

FUNCTION

1

CLK

Clock Input to Microphone

2

L/R SELECT

Left Channel or Right Channel Select:

DATA 1 (right): L/R SELECT tied to GND

DATA 2 (left): L/R SELECT tied to VDD

3

GND

Ground

4

VDD

Power Supply. For best performance and to avoid potential parasitic artifacts, place a 0.1 µF

(100 nF) ceramic type X7R capacitor between Pin 4 (VDD) and ground. Place the capacitor as

close to Pin 4 as possible.

5

DATA

Digital Output Signal (DATA1 or DATA2)

3

CLK

L/R SELECT

GND

DATA

VDD

4

5

2

1

Page 8 of 21

Document Number: DS-INMP421-00

Revision: 1.0.