参数资料
| 型号： | ADMP421BCEZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | MIC MEMS OMNI-DIR DGTL 5LGA |
| 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 |
| 其它名称： | ADMP421BCEZ-RL7DKR |
ADMP421
Data Sheet
Rev. D | Page 10 of 16
APPLICATIONS INFORMATION
INTERFACING WITH ANALOG DEVICES CODECS
codecs feature digital microphone inputs that support the
ADMP421 PDM output data format. See the connection
diagrams shown in Figure 12, and refer to the AN-1003
Application Note and the codecs’ respective data sheets for
more details on the digital microphone interface.
SLEEP MODE
The microphone enters sleep mode when the clock is turned off
or the clock frequency falls below 1 kHz. In sleep mode, the
microphone data output is in high impedance state and the
current consumption is less than 50 A.
POWER SAVINGS WHEN DISABLING ONE
MICROPHONE IN A MULTIMICROPHONE
APPLICATION
The ADMP421 has a unique power-saving feature when used in
systems where two or more microphones share the same clock
and/or data lines. The microphone is designed to present high
impedance on both the clock and data pins when the power
supply (VDD) pin is at 0 V or floating. This disabled microphone
presents no load to and consumes no power from other active
microphones.
SUPPORTING DOCUMENTS
Evaluation Board User Guides
UG-118, EVAL-ADMP421Z Bottom Port Digital Output MEMS
Microphone Evaluation Board
UG-183, EVAL-ADMP421Z-FLEX: Bottom-Ported Digital
Output MEMS Microphone Evaluation Board
Circuit Note
CN-0078, iMEMS Digital Microphone Simplifies the Interface to
a SigmaDSP Audio Codec
Application Notes
AN-1003, Recommendations for Mounting and Connecting
Analog Devices, Inc., Bottom-Ported MEMS Microphones
AN-1068, Reflow Soldering of the MEMS Microphone
AN-1112, Microphone Specifications Explained
AN-1124, Recommendations for Sealing Analog Devices, Inc.,
Bottom-Port MEMS Microphones from Dust and Liquid Ingress
ADMP421
CLK
VDD
L/R SELECT
GND
DATA
0.1F
ADMP421
CLK
VDD
L/R SELECT
GND
DATA
0.1F
MICBIAS
AVDD
1.8V TO 3.3V
JACKDET/MICIN
BCLK/GPIO2
ADAU1361
OR
ADAU1761
07596-
010
DGND
AGND
Figure 12. ADAU1361 and ADAU1761 Stereo Interface Block Diagram
OBSOLETE
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| ADMP441_1209 | 制造商:AD 制造商全称:Analog Devices 功能描述:Omnidirectional Microphone with Bottom Port and I2S Digital Output |
| ADMP441ACEZ | 制造商:Analog Devices 功能描述:MIC, MEMS, OMNI-DIR, 9LGA; Supply Voltage Range:1.8V to 3.3V; Control Interface:Serial; Audio IC Case Style:LGA; No. of Pins:9; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:MSL 5 - 48 hours; SVHC:No SVHC ;RoHS Compliant: Yes 制造商:Analog Devices 功能描述:MIC, MEMS, OMNI-DIR, 9LGA; Supply Voltage Range:1.8V to 3.3V; Control Interface:Serial; Audio IC Case Style:LGA; No. of Pins:9; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:-; SVHC:No SVHC (19-Dec-2012); ;RoHS Compliant: Yes |
| ADMP441ACEZ | 制造商:Analog Devices 功能描述:MICROPHONE OMNIDIR 24BIT CE |
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