ADMP404ACEZ-RL Analog Devices Inc, ADMP404ACEZ-RL Datasheet - Page 7

• Manufacturer Part Number: ADMP404ACEZ-RL
• Description: Analog Omni Directional Microphone
• Manufacturer: Analog Devices Inc
• Series: ADMP404r
• Type: MEMS (Silicon) - Analogr

Specifications of ADMP404ACEZ-RL

• Voltage - Rated: 3.6V
• Current: 250µA
• Sensitivity: -38dB ±3dB
• Size / Dimension: 0.132" L x 0.098" W x 0.035" H (3.35mm x 2.50mm x 0.88mm)
• S/n Ratio: 62dB
• Impedance: 200 Ohm
• Frequency: 100Hz ~ 15kHz
• Termination: Surface Mount
• Direction: Omnidirectional
• Port Location: Bottom
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Filter Type: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADMP404ACEZ-RL; ADMP404ACEZ-RLTR

APPLICATIONS INFORMATION
The ADMP404 output can be connected to a dedicated codec
microphone input (see Figure 7) or to a high input impedance
gain stage (see Figure 8). A 0.1 μF ceramic capacitor placed close
to the ADMP404 supply pin is used for testing and is recom-
mended to adequately decouple the microphone from noise on
the power supply. A dc-blocking capacitor is required at the
output of the microphone.
Figure 7. ADMP404 Connected to the Analog Devices
ADMP404
GND
V
DD
OUTPUT
ADAU1361
MINIMUM
2.2µF
0.1µF
Codec
MICBIAS
LINN
LINP
CM
ADAU1761
ADAU1361
OR
ADAU1761
or
Rev. A | Page 7 of 12
Figure 8. ADMP404 Connected to the
ADMP404
GND
V
DD
OUTPUT
0.1µF
MINIMUM
1µF
V
REF
10kΩ
GAIN = (R1 + R2)/R1
V
REF
R1
OP177
OP177
R2
Op Amp
ADMP404
V
OUT