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參數(shù)資料
| 型號： | CXA1946BR |
| 廠商： | Sony Corporation |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | 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 |
| 中文描述： | 電可擦除可編程邏輯器件 |
| 文件頁數(shù)： | 18/23頁 |
| 文件大?。?/td> | 365K |
| 代理商： | CXA1946BR |
– 18 –
CXA1946BQ/BR
Fig. 2. Input Selector (2)
2. Volume
The volume circuit consists of two sections, an 8dB/step section and a 1dB/step section, as shown in Fig. 3.
This circuit also serves as a balance control because the volume for channel 1 and channel 2 can be set
independently.
To mute the output signal, send –
∞
dB data.
The input impedance is 9.5k
(typ.) for VRIN1 and VRIN2.
The output impedance for VOUT1 and VOUT2 is low impedance (roughly 0
). The volume step width and
gain are not affected by the load impedance.
3. Loudness
The configuration of the loudness circuit is shown in Fig. 3. C
LDHCX
and C
LDLCX
are connected externally,
and the loudness frequency characteristics are determined by these constants. The relationships between
C
LDHCX
/C
LDLCX
and the frequency characteristics are as follows:
1/f
L
= 2
π
C
LDLCX
R
1
1/f
H
= 2
π
C
LDHCX
R
2
The loudness characteristics are not affected by the load impedance of VOUT1 and VOUT2.
Loudness is turned on and off by serial data bit D5.
Fig. 3. Volume and Loudness
50k
INX4
50k
INX3
50k
INX2
50k
INX1
VCT
GAINX2
GAINX1
GAINX34
INAOX
VRINX (input impedance 9.5k
)
20k
Total 40k
ON
LOUD
R1
6.18k
25.7k
R2
8.92k
4.98k
20k
C
LDHCX
0.0022μ
C
LDLCX
0.047μ
LDHCX
LDLCX
VOUTX
Loudness
Volume
OFF
f
H
f
L
Loudness frequency
characteristics
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| CXA1951Q | 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 |
| CXA1977R | 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 |
| CXA1982Q | 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 |
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| 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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