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參數資料
| 型號： | LC75348M |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO30 |
| 封裝： | MFP-30 |
| 文件頁數： | 9/21頁 |
| 文件大小： | 214K |
| 代理商： | LC75348M |
Usage Notes
The internal transistor states are undefined when power is first applied. Applications must mute the output until control
data has been written to the IC.
Operational description of the zero cross switching circuit
The LC75348 and LC75348M provide a function that can switch the zero cross comparator signal detection point,
allowing applications to select an optimal detection point for the block whose data is being updated. Basically,
switching noise can be minimized if the signal immediately following the block whose data is updated is input to the
zero cross comparator. This means that the detection point must be switched each time data is updated.
Zero cross switching control procedure
The zero cross switching control procedure consists of three steps. First, set the zero cross control bit to zero cross
detection mode (D25 = 0), then specify the block for detection (with bits D28 and D29), and finally transfer the data.
Since these control bits are latched first, immediately after the data is transferred, i.e. on the CE falling edge, the mode
can be set in a single data transfer operation when updating the volume control or other control block data. The figure
below presents an example of the control used when updating the volume control block data.
No. 7308 -17/21
LC75348, 75348M
LC75348 and LC75348M Zero Cross Detection Circuit
Selector
Volume
Tone controls
Switch
Zero cross
comparator
Zero cross detection
mode setting
Volume control
block setting
D25
D28
D29
0
1
0
相關PDF資料 |
PDF描述 |
|---|---|
| LC75348 | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP30 |
| LC75348M | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO30 |
| LC75348 | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP30 |
| LC7535M | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO30 |
| LC7535P | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP22 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LC75348M-TLM-E | 功能描述:音頻 DSP RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| LC7534M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:3V-Operated Electronic Volume Control |
| LC7535 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LC7535M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Electronic Volume/Loudness Control with Serial Data Control and High Voltage-Handling Capacity |
| LC7535P | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:High-voltage, Two-channel Electronic Attenuator |
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