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參數(shù)資料
| 型號： | CXA1946AQ |
| 廠商： | Sony Corporation |
| 英文描述： | Electronic Volume |
| 中文描述： | 電子音量 |
| 文件頁數(shù)： | 17/23頁 |
| 文件大小： | 365K |
| 代理商： | CXA1946AQ |
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CXA1946BQ/BR
Description of Operation
The CXA1946BQ/BR is a serial control electronic volume IC designed for use in audio systems.
The internal circuit of the IC consists of the following blocks:
1. Input selector
2. Volume
3. Loudness
4. Tone control
5. Fader
6. VCT buffer
7. Serial data I/O
8. Zero-cross detector (with timer)
9. Power-off mute
The operation of each block and notes on their use are described below.
Note that when the circuits for channels 1 and 2 are identical, the suffix “X” is added to pin names and device
names in order to distinguish between the two channels.
1. Input selector
There are two channels (stereo), each with four systems of input pins; the input selector selects one of
those input systems.
The gain between the input pins and the output pin of the input selector can be set independently for each
input system, except the gain for inputs 3 and 4 is common.
Determine the gain for each system through the settings of the feedback circuit constants as shown in Figs.
1 and 2. When each input gain is set to
×
1, short INAOX and GAIN
×
1,GAIN
×
2,GAIN
×
34.
The input impedance is 50k
(typ.) for each input.
The output impedance for INAO1 and INAO2 is low impedance (roughly 0
). The gain is not affected by the
load impedance.
Fig. 1. Input Selector (1)
50k
INX4
50k
INX3
50k
INX2
50k
INX1
VCT
GAINX2
GAINX1
GAINX34
INAOX
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CXA1946AR | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| CXA1946BQ | Electronic Volume |
| CXA1946BR | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| CXA1946CR | Electronic Volume |
| CXA1951AQ | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CXA1998AQT6 | 制造商:Panasonic Industrial Company 功能描述:IC |
| CXA1998QT6 | 制造商:Panasonic Industrial Company 功能描述:IC |
| CXA20 | 制造商:ARTESYN 制造商全稱:Artesyn Technologies 功能描述:20W DC/DC Converters |
| CXA2000 | 制造商:SONY 制造商全稱:Sony Corporation 功能描述:Y/C/RGB/D for PAL/NTSC Color TVs |
| CXA2000Q | 制造商:SONY 制造商全稱:Sony Corporation 功能描述:Y/C/RGB/D for PAL/NTSC Color TVs |
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