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参数资料
| 型号： | LC75348 |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP30 |
| 封装： | DIP-30 |
| 文件页数： | 9/21页 |
| 文件大小： | 214K |
| 代理商： | LC75348 |
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
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PDF描述 |
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| LC7535M | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO30 |
| LC7535P | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP22 |
| LC75366M | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP20 |
| LC75366 | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP20 |
| LC7536LHS | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP30 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LC75348M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip Electronic Volume and Tone Control System |
| LC75348M-TLM-E | 功能描述:音频 DSP RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| LC7534M | 制造商:SANYO 制造商全称: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 制造商全称:Sanyo Semicon Device 功能描述:Electronic Volume/Loudness Control with Serial Data Control and High Voltage-Handling Capacity |
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