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參數(shù)資料
| 型號： | LP3952 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 6-Channel Color LED Driver with Audio Synchronization |
| 中文描述： | 6通道彩色LED驅動器與音頻同步 |
| 文件頁數(shù)： | 29/44頁 |
| 文件大?。?/td> | 1621K |
| 代理商： | LP3952 |
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Application Examples
EXAMPLE 1
30023876
There may be cases where the audio input signal going into the LP3952 is too weak for audio synchronization. This figure presents a single-supply inverting
amplifier connected to the ASE input for audio signal amplification. The amplification is +20 dB, which is well enough for 20 mVp-p audio signal. Because the
amplifier (LMV321) is operating in single supply voltage, a voltage divider using R3 and R4 is implemented to bias the amplifier so the input signal is within the
input common-mode voltage range of the amplifier. The capacitor C1 is placed between the inverting input and resistor R1 to block the DC signal going into the
audio signal source. The values of R1 and C1 affect the cutoff frequency, fc = 1/(2
π
*R1*C1), in this case it is around 160 Hz. As a result, the LMV321 output
signal is centered around mid-supply, that is V
DDA
/2. The output can swing to both rails, maximizing the signal-to-noise ratio in a low voltage system
29
www.national.com
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相關PDF資料 |
PDF描述 |
|---|---|
| LP3952RLX | 6-Channel Color LED Driver with Audio Synchronization |
| LP3952RL | 6-Channel Color LED Driver with Audio Synchronization |
| LP39542 | Zener Diode; Application: Low noise; Pd (mW): 250; Vz (V): 4.3 to 4.7; Condition Iz at Vz (mA): 0.5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: LLD |
| LP39542RL | Zener Diode; Application: Low noise; Pd (mW): 250; Vz (V): 4.6 to 5.0; Condition Iz at Vz (mA): 0.5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: LLD |
| LP39542RLX | Zener Diode; Application: Low noise; Pd (mW): 250; Vz (V): 4.9 to 5.3; Condition Iz at Vz (mA): 0.5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: LLD |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LP3952RL | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:6-Channel Color LED Driver with Audio Synchronization |
| LP3952RL/NOPB | 功能描述:LED照明驅動器 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 |
| LP3952RLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:6-Channel Color LED Driver with Audio Synchronization |
| LP3952RLX/NOPB | 功能描述:LED照明驅動器 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 |
| LP3954 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Advanced Lighting Management Unit |
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