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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(dòng)器與音頻同步 |
| 文件頁數(shù)： | 21/31頁 |
| 文件大?。?/td> | 1085K |
| 代理商： | LP3950 |
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Audio Synchronization
(Continued)
Audio Synchronization Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Zin
Input Impedance of AD1, AD2,
ASE pins
Audio Input Level Range
(peak-to-peak), Single Ended
Audio
Audio Input Level Range
(peak-to-peak), Differential
Audio
Crossover Frequencies (3 dB)
Narrow Frequency Response
200
500
k
A
IN_SINGLE
0.1
V
DDA
0.1
V
A
IN_DIFF
0.1
V
DDA
0.1
V
f
3 dB
kHz
Low Pass
Band Pass
High Pass
Low Pass
Band Pass
High Pass
0.5
1.0 and 1.5
2.0
1.0
2.0 and 3.0
4.0
Wide Frequency Response
CONTROL OF AUDIO SYNCHRONIZATION
The following table describes the controls required for audio
synchronization. Note that these controls are functional
when using serial interface (I
2
C or SPI) for device control.
Also LP3950 audio synchronization functionality is illustrated
in
Figure 18
.
Audio Synchronization Control
EN_SYNC
Audio synchronization enabled. Set EN_SYNC = 1 to enable audio synchronization or 0
to disable.
Synchronization mode selector. Set SYNC_MODE = 0 for amplitude synchronization. Set
SYNC_MODE = 1 for frequency synchronization.
See below: Mode control
Automatic gain control. Set EN_AGC = 1 to enable automatic control or 0 to disable.
When EN_AGC is disabled, the audio input signal gain value is defined by GAIN_SEL.
Input signal gain control. Gain has a range from 0 dB to 21 dB with 3 dB steps:
[000] ... 0 dB
[011] ... 9 dB
[001] ... 3 dB
[100] ... 12 dB
[010] ... 6 dB
[101] ... 15 dB
[00] ... Single ended input signal, ASE.
[01] ... Differential input signal, AD1 and AD2.
[10] ... Stereo input or single ended and differential input signal.
Note: Sum of input signals divided by 2.
[11] ... No input
Please see
Figure 15
for wiring.
Control for speed of the mapping. Sets the reaction speed (or "sampling rate") for the
audio input signal:
[00] ... FASTEST
[01] ... FAST
[11] ... SLOW
In the amplitude mode f
MAX
= 3.8 Hz, in the frequency mode f
MAX
= 7.6 Hz.
SYNC_MODE
MODE_CTRL[1:0]
EN_AGC
GAIN_SEL[2:0]
[110] ... 18 dB
[111] ... 21 dB
INPUT_SEL[1:0]
SPEED_CTRL[1:0]
[10] ... MEDIUM
L
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相關(guān)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(guān)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(dòng)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(fēng)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(dòng)器 系列:PowerWise® 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動(dòng)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(yīng)商設(shè)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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