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參數(shù)資料
| 型號： | LMV1022URX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | AUDIO PREAMPLIFIER, PBGA6 |
| 封裝： | MICRO, SMD-6 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大小： | 623K |
| 代理商： | LMV1022URX |
LMV1022/LMV1023
OBSOLETE
July 8, 2011
PDM Output Pre-Amplifier for Electret Microphones
General Description
The LMV1022 and LMV1023 integrate a pre-amplifier and
ADC that can be mounted inside an electret condenser mi-
crophone (ECM). The digital output signal is a pulse density
modulation (PDM) bitstream that alows the microphone to
connect directly to the DSP or baseband processor.
Part of National Semiconductor’s Powerwise family of prod-
ucts, the LMV1022/LMV1023 consume 900W of power dur-
ing operation, offering significant power savings over an
analog microphone with an external ADC. The LMV1022 out-
puts its data on the rising clock edge. The LMV1023 outputs
its data on the falling clock edge. Both devices can share the
same clock and data lines to create a 4-wire stereo solution.
The external clock frequency sets the audio pass band fre-
quency. An 800kHz clock sets the pass band to 7kHz. A
2.4MHz clock sets the pass band to 20kHz.
The LMV1022 and LMV1023 are available in 6-bump micro
SMD packages with 1kg adhesion properties.
Key Specifications
(Typical V
DD = 1.8V, CLOCK = 1.2MHz, fINPUT = 1kHz,
V
INPUT = 18mVPP, unless otherwise specified)
■ SNR A-weighted
61dB
■ Analog A-weighted noise floor
5 V
RMS
■ Supply current
0.5mA
■ Total harmonic distortion
0.05%
■ Power supply rejection ratio
87dB
Features
■ Integrated 21 dB Pre-Amp and ADC for significant power
and space savings
■ Integrated high-pass Filter to reduce 'Plop Noise'
■ Excellent RF immunity (e.g. buzz noise)
■ LMV1022 and LMV1023 combine to create 4-wire Stereo
Solution
■ Very thin 0.35mm micro SMD packaging
■ Adhesion technology >1kg
Applications
■ Digital audio subsystems and stereo arrays
■ Electret condenser microphones with all digital output
■ Portable communications and small form factor devices
■ Digital audio computing or voice security
■ Automotive or array systems
■ Headphone and headset accessories
Typical Application
20212475
For a stereo application, see STEREO OPERATION in the Application Section.
2011 National Semiconductor Corporation
202124
www.national.com
202124 Version 2 Revision 1
Print Date/Time: 2011/07/08 14:36:52
LMV1022/LMV1023
PDM
Output
Preamp
for
Electret
Microphones
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMV1024 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PDM Output with Pre-Amplifier for Electret Microphones |
| LMV1024_09 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PDM Output with Pre-Amplifier for Electret Microphones |
| LMV1024UR | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PDM Output with Pre-Amplifier for Electret Microphones |
| LMV1024UR/NOPB | 功能描述:IC PRE AMP MIC MONO AB ADC 6USMD RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機，2-通道（立體聲） 在某負載時最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風(fēng)，靜音，短路保護，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LMV1024URX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PDM Output with Pre-Amplifier for Electret Microphones |
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