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參數(shù)資料
| 型號： | LP3950 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Color LED Driver with Audio Synchronizer |
| 中文描述： | 彩色LED驅(qū)動器與音頻同步 |
| 文件頁數(shù)： | 22/31頁 |
| 文件大?。?/td> | 1085K |
| 代理商： | LP3950 |
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Audio Synchronization
(Continued)
MODE CONTROL IN THE FREQUENCY MODE
During the frequency mode (SYNC_MODE = 1) the user can
select between two filter options by MODE_CTRL[1:0] as
shown below (
Figure 19
). User can select the filters based
on the music type and light effect requirements. Filter op-
tions:
Left
figure,
wide
MODE_CTRL[1:0] is set to [00], [10] or [11]. Right figure,
narrow frequency response: MODE_CTRL[1:0] set to [01].
Signal passed through the lowpass filter is used to control
the duty cycle of red LEDs (R1 and/or R2 PWM outputs), the
frequency
response;
signal passed through the bandpass filter is used to control
green LEDs (G1 and/or G2 PWM outputs) and high pass
signal controls blue LEDs (B1 and/or B2 PWM outputs).
Finally, the user can select the desired mapping speed by
SPEED_CTRL[1:0]. Of course, the user can connect any
color LED to any output in his/her own application (i.e. the
red output does not need to drive a red LED). Maximum duty
cycle is
A
100% as in the Flash mode (not 33% as in the
normal mode of the pattern generator, which is described in
Table RGB LED PWM Control
).
20129328
FIGURE 18. LP3950 Audio Synchronization Functionality
20129333
20129334
FIGURE 19. Cross-over Frequencies. Left: Wide Frequency Response. Right: Narrow Frequency Response
L
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相關PDF資料 |
PDF描述 |
|---|---|
| LP3950SL | Color LED Driver with Audio Synchronizer |
| LP3950SLX | Color LED Driver with Audio Synchronizer |
| LP3952 | 6-Channel Color LED Driver with Audio Synchronization |
| LP3952RLX | 6-Channel Color LED Driver with Audio Synchronization |
| LP3952RL | 6-Channel Color LED Driver with Audio Synchronization |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3950SL | 制造商:Texas Instruments 功能描述:LED DRIVER COLOUR POWERWISE LLP32 |
| LP3950SL/CSP1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LP3950SL/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3950SLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Color LED Driver with Audio Synchronizer |
| LP3950SLX/NOPB | 功能描述:IC LED DRVR WHITE BCKLGT 32-TSCP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:PowerWise® 標準包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓撲:PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應商設備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
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