EVAL-ADMP441Z AD [Analog Devices], EVAL-ADMP441Z Datasheet - Page 6

• Manufacturer Part Number: EVAL-ADMP441Z
• Description: Omnidirectional Microphone
• Manufacturer: AD [Analog Devices]

ADMP441
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 6. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
Mnemonic
SCK
SD
WS
L/R
GND
GND
V
CHIPEN
GND
DD
Type
Input
Output
Input
Input
Ground
Ground
Power
Input
Ground
Description
Serial Data Clock for I²S Interface.
Serial Data Output for I²S Interface. This pin tristates when not actively driving the appropriate
output channel. The SD trace should have a 100 kΩ pull-down resistor to discharge the line during
the time that all microphones on the bus have tristated their outputs.
Serial Data-Word Select for I²S Interface.
Left/Right Channel Select. When set low, the microphone outputs its signal in the left channel of
the I²S frame; when set high, the microphone outputs its signal in the right channel.
Ground. Connect to ground on the PCB.
Ground. Connect to ground on the PCB.
Power, 1.8 to 3.3 V. This pin should be decoupled to Pin 6 with a 0.1 μF capacitor.
Microphone Enable. When set low (ground), the microphone is disabled and put in power-down
mode. When set high (V
Ground. Connect to ground on the PCB.
SCK
L/R
WS
SD
4
3
2
1
Figure 5. Pin Configuration
BOTTOM VIEW
Rev. A | Page 6 of 16
(Not to Scale)
ADMP441
DD
), the microphone is enabled.
6 GND
7 V
8 CHIPEN
9 GND
DD
Data Sheet