ADMP421

Data Sheet

Rev. D | Page 6 of 16

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

1

2

3

CLK

L/R SELECT

GND

DATA

5

Figure 4. Pin Configuration (Bottom View)

Table 5. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

CLK

Clock Input to Microphone.

2

L/R SELECT

Left Channel or Right Channel Select.

DATA1 (right): L/R SELECT tied to GND.

3

GND

Ground.

4

recommended for best performance and to avoid potential parasitic artifacts. The capacitor should be placed as

close to Pin 4 as possible.

5

DATA

Digital Output Signal (DATA1, DATA2).