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參數(shù)資料
| 型號： | LMV1023URX |
| 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)： | 6/18頁 |
| 文件大?。?/td> | 623K |
| 代理商： | LMV1023URX |
20212461
FIGURE 7. Frequency Spectrum
A low-pass decimation filter implemented in the baseband
chip or DSP eliminates the noise above the band of interest.
The resulting frequency spectrum contains only the frequency
components left within the band of interest. Figure 8 depicts
the frequency spectrum after filtering.
20212473
FIGURE 8. Frequency Spectrum after Filtering
STEREO OPERATION
The LMV1022 and the LMV1023 are designed to operate to-
gether in a stereo solution with two microphones. One micro-
phone will have a LMV1022 built-in and the other will have a
LMV1023 built-in. These two microphones share the same
interface lines to minimize wiring (Figure 9).
20212425
FIGURE 9. Stereo Application
Both microphones produce valid data in only one half of a
clock cycle to allow the two microphones to operate on the
same I/O lines (Data and Clock). To avoid overlap between
the drivers of the microphones, one microphone always goes
into a high impedance state before the second microphone
starts driving the data-line. The edge of this clock is the proper
moment for latching the data to the attached application. The
LMV1022 is positive edge triggered while the LMV1023 is
negative edge triggered. The timing between the two micro-
phones is shown in Figure 10. For exact timing values, please
see the Electrical Characteristics table.
20212429
FIGURE 10. Timing stereo application
www.national.com
14
202124 Version 2 Revision 1
Print Date/Time: 2011/07/08 14:36:52
LMV1022/LMV1023
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMV1023UR | AUDIO PREAMPLIFIER, PBGA6 |
| LMV1022URX | AUDIO PREAMPLIFIER, PBGA6 |
| LMV1024UPX | 1 CHANNEL, AUDIO PREAMPLIFIER, PBGA6 |
| LMV1024UP | 1 CHANNEL, AUDIO PREAMPLIFIER, PBGA6 |
| LMV1026UPX | 1 CHANNEL, AUDIO PREAMPLIFIER, PBGA6 |
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，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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