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參數(shù)資料
| 型號： | EVAL-ADMP521Z |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 12/17頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR ADMP521Z |
| 標準包裝： | 1 |
| 系列： | iMEMS® |
| 主要目的： | 音頻，MEMS 全向麥克風(fēng) |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADMP521 |
| 主要屬性： | 數(shù)字輸出 |
| 已供物品： | 板 |
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
A
VDD = 3.3 V
0.8
A
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
s
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
3
The microphone enters sleep mode when clock frequency is less than 1 kHz.
OBSOLETE
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