ADMP421 datasheet(6/16 Pages) AD

部品番号	ADMP421

部品情報	Omnidirectional Microphone with Bottom Port and Digital Output

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ADMP421

Rev. 0 | Page 6 of 16

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

1

2

3

CLK

L/R SELECT

GND

DATA

VDD 4

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.

DATA2 (left): L/R SELECT pulled to VDD.

3

GND

Ground.

4

VDD

Power Supply. For best performance and to avoid potential parasitic artifacts, placing a 0.1 μF (100 nF) ceramic type

X7R or better capacitor between Pin 4 (VDD) and ground is strongly recommended. The capacitor should be placed

as close to Pin 4 as possible.

5

DATA

Digital Output Signal (DATA1, DATA2).

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