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ADMP441 Scheda tecnica(PDF) 3 Page - Analog Devices

Il numero della parte ADMP441
Spiegazioni elettronici  Omnidirectional Microphone with Bottom Port and I2S Digital Output
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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Data Sheet
ADMP441
Rev. B | Page 3 of 16
SPECIFICATIONS
TA = 25°C, VDD = 2.4 V, SCK = 3.072 MHz, SPL = 104 dB (3.16 Pa rms), unless otherwise noted. All minimum and maximum
specifications are guaranteed. Typical specifications are not guaranteed.
Table 1.
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
PERFORMANCE
Directionality
Omni
Sensitivity at 94 dB SPL1
1 kHz, 104 dB SPL
−29
−26
−23
dBFS
Signal-to-Noise Ratio
SNR
20 kHz bandwidth, A-weighted
61
dBA
Equivalent Input Noise
EIN
20 kHz bandwidth, A-weighted
33
dBA SPL
Dynamic Range
Derived from EIN and maximum acoustic input
87
dB
Frequency Response2
Low frequency –3 dB point
60
Hz
High frequency –3 dB point
15
kHz
Deviation limits from flat response within pass band
−3/+2
dB
Total Harmonic Distortion
THD
104 dB SPL
3
%
Power Supply Rejection
PSR
217 Hz, 100 mV p-p square wave superimposed on V
DD
−75
dBFS
Maximum Acoustic Input
Peak
120
dB SPL
Noise Floor
20 Hz to 20 kHz, A-weighted, rms
−87
dBFS
POWER SUPPLY
Supply Voltage
V
DD
1.8
3.3
V
Supply Current
I
DD
V
DD = 1.8 V
Normal Mode
1.4
1.6
mA
Standby
0.8
mA
Power-Down
2
µA
V
DD = 3.3 V
Normal Mode
2.2
2.5
mA
Standby
0.8
mA
Power-Down
4.5
µA
DIGITAL FILTER
Group Delay
17.25/f
S
sec
f
S = 48 kHz
359
µs
f
S = 16 kHz
1078
µs
Pass-Band Ripple
±0.04
dB
Stop-Band Attenuation
60
dB
Pass Band
0.423 × f
S
20.3
kHz
1 The peak-to-peak amplitude is relative to peak-to-peak amplitude of 224 − 1. The stimulus is a 104 dB SPL sinusoid having rms amplitude of 3.1623 Pa. Sensitivity is
relative to 1 Pa.
2 See Figure 6 and Figure 8.


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