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參數(shù)資料
| 型號(hào)： | LV3311PNM |
| 元件分類(lèi)： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP44 |
| 封裝： | 10 X 10 MM, QIP-44 |
| 文件頁(yè)數(shù)： | 10/20頁(yè) |
| 文件大?。?/td> | 144K |
| 代理商： | LV3311PNM |
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LV3311PNM
No.A0720-18/20
Usage Cautions
(1) Data Transmission at power on
The status of internal analog switches is unstable at power on. Therefore, perform muting or some other
countermeasure until the data has been set.
At power on, initial setting data must be sent once in order to stabilize the bias of each block in a short time.
(2) Description of zero cross switching circuit operation
The LV3311PNM have a function to switch zero cross comparator signal detection locations, enabling the selection
of the optimum detection location for blocks whose data is to be updated.Basically, the switching noise can be
minimized by inputting the signal immediately following the block whose data is to be updated to the zero cross
comparator, so it is necessary to switch the detection location every time.
LV3311PNM zero cross detection circuit
(3) Zero Cross Switching Control method
The zero cross switching control method consists of setting the zero cross control bits to the zero cross detection mode,
and specifying the detection blocks before transmitting the data. These control bits are latched immediately following
data transfer, that is to say beforehand in sync with the falling edge of CE, so when updating data of volumes, etc., it
is possible to perform mode setting and zero cross switching with one data transfer.
(4) Zero cross timer setting
If the input signal becomes lower than the zero cross comparator detection sensitivity, or if only low-frequency
signals are input, zero cross detection continues to be impossible, and data is not latched during this time. The zero
cross timer can set a time for forcible latch during such a status when zero cross detection is not possible.
(5) Soft step operation
The LV3311PNM have a soft step function at 3 band equalizer block and subwoofer block for low switching noise.
The Soft step time can be selected by send to CCB control. (l0ms, 20ms, 40ms, 80ms)
A soft step function can be implemented by set to soft step on. (Set to minimum step)
Input gain
Zero cross
comparator
Switch
Volume
Fader
soft step time
CE "H"
→ "L"
soft step start
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LV3311PNM-TLM-E | 功能描述:音頻 DSP ELECTRONIC VOLUME RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| LV3313PM | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:Bi-CMOS LSI For Car Audio Systems Electronic Volume IC |
| LV3313PMGEVB | 制造商:ON Semiconductor 功能描述:SE - STANDARD LSI PRODUCTS 1 - Bulk |
| LV3313PM-MPB-E | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LV3313PM-TLM-E | 功能描述:音頻放大器 ELECTRONIC VOLUME RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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