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| 型号： | EVAL-ADMP521Z-FLEX |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADMP521Z |
| 标准包装： | 1 |
| 系列： | iMEMS® |
| 主要目的： | 音频，MEMS 全向麦克风 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADMP521 |
| 主要属性： | 数字输出 |
| 已供物品： | 板 |
Ultralow Noise Microphone with
Bottom Port and PDM Digital Output
Data Sheet
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2012 Analog Devices, Inc. All rights reserved.
FEATURES
Small and thin 4 mm × 3 mm × 1 mm surface-mount package
Omnidirectional response
Very high SNR: 65 dBA
Sensitivity of 26 dBFS
Extended frequency response from 100 Hz to 16 kHz
Low current consumption: 900 A
Sleep mode for extended battery life, <1 A consumption
120 dB maximum SPL
High PSR of 80 dBFS
Fourth-order Σ-Δ modulator
Digital PDM output
Compatible with Sn/Pb and Pb-free solder processes
RoHS/WEEE compliant
APPLICATIONS
Smartphones and feature phones
Tablet computers
Teleconferencing systems
Digital still and video cameras
Bluetooth headsets
Notebook PCs
Security and surveillance
FUNCTIONAL BLOCK DIAGRAM
ADMP521
ADC
POWER
MANAGEMENT
CLK
DATA
V
DD
G
ND
PDM
MODULATOR
CHANNEL
SELECT
L
/R
SEL
EC
T
10141-
001
Figure 1.
BOTTOM
TOP
10141
-011
Figure 2. Isometric Views of ADMP521 Microphone Package
GENERAL DESCRIPTION
The ADMP5211 is a high performance, ultralow noise, low
power, digital output, bottom-ported omnidirectional MEMS
microphone. The ADMP521 consists of a MEMS microphone
element and an impedance converter amplifier followed by a
fourth-order sigma-delta (Σ-Δ) modulator. The digital interface
allows for the pulse density modulated (PDM) output of two
microphones to be time-multiplexed on a single data line using
a single clock. The ADMP521 is function and pin compatible with
the ADMP421 microphone, providing an easy upgrade path.
The ADMP521 has a very high signal-to-noise ratio (SNR) and
common sensitivity of 26 dBFS, making it an excellent choice
for far field applications. The ADMP521 has an extended wide-
band frequency response resulting in natural sound with high
intelligibility. Low current consumption and a sleep mode with
less than 1 A current consumption enables long battery life
for portable applications. The ADMP521 complies with the
TIA-920 Tele-communications Telephone Terminal Equipment
Transmission Requirements for Wideband Digital Wireline
Telephones standard.
The ADMP521 is available in a thin 4 mm × 3 mm × 1 mm
surface-mount package. It is reflow solder compatible with
no sensitivity degradation. The ADMP521 is halide free.
1
Protected by U.S. Patents 7,449,356; 7,825,484; 7,885,423; 7,961,897. Other patents are pending.
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