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| 型号： | ADMP421ACEZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | MIC MEMS OMNI-DIR DIGITAL 5-LGA |
| 设计资源： | Stereo Digital Microphone Input Using ADAU1761 and ADMP421 (CN0078) |
| 标准包装： | 1 |
| 系列： | ADMP421 |
| 类型： | MEMS（硅） |
| 输出类型： | 数字，PDM |
| 方向： | 全向 |
| 频率范围： | 100Hz ~ 15kHz |
| 灵敏度： | -26dB ±3dB |
| 信噪比： | 61dB |
| 电压 - 额定： | 1.8 ~ 3.3V |
| 电流 - 电源： | 650µA |
| 端口位置： | 底部 |
| 密封等级： | 无 |
| 端子： | 表面贴装型 |
| 尺寸/尺寸： | 4.00mm L x 3.00mm W |
| 高度（最大）： | 1.10mm |
| 形状： | 矩形 |
| 包装： | 标准包装 |
| 产品目录页面： | 2826 (CN2011-ZH PDF) |
| 配用： | EVAL-ADMP421Z-FLEX-ND - BOARD EVALUATION FOR ADMP421 |
| 其它名称： | ADMP421ACEZ-RL7DKR |
Omnidirectional Microphone with
Bottom Port and Digital Output
Data Sheet
Rev. D
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
2010–2011 Analog Devices, Inc. All rights reserved.
FEATURES
Small and thin 3 mm × 4 mm × 1 mm surface-mount package
High SNR of 61 dBA
High sensitivity of 26 dBFS
Flat frequency response from 100 Hz to 15 kHz
Low current consumption: <650 A
Sleep mode for extended battery life
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
Teleconferencing systems
Digital video cameras
Bluetooth headsets
Video phones
Tablets
GENERAL DESCRIPTION
The ADMP421 is a high performance, low power, digital output
bottom-ported omnidirectional MEMS microphone. The
ADMP421 consists of a MEMS microphone element and an
impedance converter amplifier followed by a fourth-order 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 ADMP421 has a high SNR and high sensitivity, making it
an excellent choice for far field applications. The ADMP421 has
a flat wideband frequency response, resulting in natural sound
with high intelligibility. Low current consumption and a sleep
mode enable long battery life for portable applications. A built-
in particle filter provides high reliability. The ADMP421 complies
with the TIA-920 Telecommunications Telephone Terminal
Equipment Transmission Requirements for Wideband Digital
Wireline Telephones standard.
The ADMP421 is available in a thin 3 mm × 4 mm × 1 mm
surface-mount package. It is reflow solder compatible with no
sensitivity degradation. The ADMP421 is halide free.
FUNCTIONAL BLOCK DIAGRAM
ADMP421
ADC
POWER
MANAGEMENT
CLK
DATA
V
DD
G
ND
PDM
MODULATOR
CHANNEL
SELECT
L
/R
SEL
EC
T
07596-
001
Figure 1.
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| ADMP421BCEZ | 制造商:InvenSense Inc 功能描述:Omnidirectional Microphone, TR7 |
| ADMP421BCEZ-RL | 功能描述:MIC MEMS OMNI-DIR DGTL 5LGA RoHS:是 类别:音频产品 >> 麦克风 系列:ADMP421 产品目录绘图:SPM04xxHx(5,xH)-xB SP Series_FTPRNT-5 标准包装:1 系列:SiSonic™ 类型:MEMS（硅） 输出类型:模拟 方向:全向 频率范围:100Hz ~ 10kHz 灵敏度:-42dB ±3dB 信噪比:59dB 阻抗:100 欧姆 电压 - 额定:1.5 ~ 3.6V 电流 - 电源:250µA 端口位置:顶部 密封等级:无 端子:表面贴装型 尺寸/尺寸:4.72mm L x 3.76mm W 高度（最大）:1.35mm 形状:矩形 包装:Digi-Reel® 产品目录页面:2669 (CN2011-ZH PDF) 其它名称:423-1131-6 |
| ADMP421BCEZ-RL7 | 功能描述:MIC MEMS OMNI-DIR DGTL 5LGA RoHS:是 类别:音频产品 >> 麦克风 系列:ADMP421 产品目录绘图:SPM04xxHx(5,xH)-xB SP Series_FTPRNT-5 标准包装:1 系列:SiSonic™ 类型:MEMS（硅） 输出类型:模拟 方向:全向 频率范围:100Hz ~ 10kHz 灵敏度:-42dB ±3dB 信噪比:59dB 阻抗:100 欧姆 电压 - 额定:1.5 ~ 3.6V 电流 - 电源:250µA 端口位置:顶部 密封等级:无 端子:表面贴装型 尺寸/尺寸:4.72mm L x 3.76mm W 高度（最大）:1.35mm 形状:矩形 包装:Digi-Reel® 产品目录页面:2669 (CN2011-ZH PDF) 其它名称:423-1131-6 |
| ADMP421X | 制造商:Analog Devices 功能描述: |
| ADMP441 | 制造商:Analog Devices 功能描述:MIC MEMS OMNI-DIR 9LGA 制造商:Analog Devices 功能描述:MIC, MEMS, OMNI-DIR, 9LGA |
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