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ADMP521 Folha de dados(PDF) 3 Page - Analog Devices

Nome de Peças ADMP521
Descrição Electrónicos  Ultralow Noise Microphone
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
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ADMP521 Folha de dados(HTML) 3 Page - Analog Devices

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Data Sheet
ADMP521
Rev. A | Page 3 of 16
SPECIFICATIONS
TA = 25°C, VDD = 1.8 V, CLK = 2.4 MHz, unless otherwise noted. All minimum and maximum specifications are guaranteed. Typical
specifications are not guaranteed.
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
PERFORMANCE
Directionality
Omni
Sensitivity1
1 kHz, 94 dB sound pressure level (SPL)
−29
−26
−23
dBFS
Signal-to-Noise Ratio (SNR)
20 Hz to 20 kHz, A-weighted
65
dBA
Equivalent Input Noise (EIN)
20 Hz to 20 kHz, A-weighted
29
dBA SPL
Dynamic Range
Derived from EIN and maximum acoustic input
91
dB
Frequency Response2
Low frequency −3 dB point
100
Hz
High frequency −3 dB point
16
kHz
Deviation limits from flat response within pass band
−3/+8
dB
Total Harmonic Distortion (THD)
105 dB SPL
2.5
%
Power Supply Rejection (PSR)
217 Hz, 100 mV p-p sine wave superimposed on
VDD = 1.8 V
−80
dBFS
Maximum Acoustic Input
Peak
120
dB SPL
POWER SUPPLY
Supply Voltage (VDD)
1.8
3.3
V
Supply Current (IS)
Normal Mode
VDD = 1.8 V
0.9
1.0
mA
VDD = 3.3 V
1.0
1.2
mA
Sleep Mode3
VDD = 1.8 V
0.5
µA
VDD = 3.3 V
0.8
µA
DIGITAL INPUT/OUTPUT CHARACTERISTICS
Input Voltage High (VIH)
0.65 × VDD
V
Input Voltage Low (VIL)
0.35 × VDD
V
Output Voltage High (VOH)
ILOAD = 0.5 mA
0.7 × VDD
VDD
V
Output Voltage Low (VOL)
ILOAD = 0.5 mA
0
0.3 × VDD
V
Output DC Offset
Percent of full scale
7
%
Latency
<30
µs
Noise Floor
20 Hz to 20 kHz, A-weighted
−91
dBFS
1
Relative to the rms level of a sine wave with positive amplitude equal to 100% 1s density and negative amplitude equal to 0% 1s density.
2
See Figure 7 and Figure 8.
3
The microphone enters sleep mode when clock frequency is less than 1 kHz.


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