admp401 Analog Devices, Inc., admp401 Datasheet - Page 3

• Manufacturer Part Number: admp401
• Description: Omnidirectional Microphone With Bottom Port And Analog Output
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
SPECIFICATIONS
T
guaranteed.
Table 1.
Parameter
PERFORMANCE
POWER SUPPLY
OUTPUT CHARACTERISTICS
1
Positive going (increasing) pressure on the membrane results in a positive going (increasing) output voltage.
A
Directionality
Sensitivity
Signal-to-Noise Ratio
Equivalent Input Noise
Frequency Response
Total Harmonic Distortion
Power Supply Rejection Ratio
Maximum Acoustic Input
Supply Voltage
Supply Current
Output Impedance
Polarity
= 25°C, V
DD
= 1.8 V, unless otherwise noted. All minimum and maximum specifications are guaranteed. Typical specifications are not
Symbol
SNR
EIN
THD
PSRR
V
I
Z
S
DD
OUT
Test Conditions/Comments
1 kHz, 94 dB SPL
100 Hz to 10 kHz
100 Hz to 12 kHz
105 dB SPL
217 Hz, 100 mV p-p square wave super-
imposed on V
Peak
Rev. PrB | Page 3 of 8
DD
= 1.8 V
Min
−40
60
−2
−3
50
1.5
Noninverting
Typ
Omni
−37
62
32
0
0
120
200
1
Max
−34
+2
+2
3
3.6
200
ADMP401-1
Unit
dBV
dBA
dBA SPL
dB
%
dB
dB SPL
V
μA
Ω
dB