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參數(shù)資料
| 型號(hào)： | AN7191NZ |
| 廠商： | PANASONIC CORP |
| 元件分類(lèi)： | 音頻／視頻放大 |
| 英文描述： | Dual 20 W BTL audio power amplifier |
| 中文描述： | 24 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| 封裝： | ZFM-15 |
| 文件頁(yè)數(shù)： | 12/16頁(yè) |
| 文件大?。?/td> | 146K |
| 代理商： | AN7191NZ |
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12
AN7191NZ
ICs for Audio Common Use
I
Technical Information (continued)
[2] Application note (continued)
3. Input terminal
1) The reference voltage of input terminal is 0 V. When the input signal has a reference voltage other than 0 V
potential, connect a coupling capacitor (of about several
μ
F) for DC component cut in series with the input
terminal. Check the low-pass frequency characteristics to determine the capacitance value.
2) 10 k
or less of signal source impedance R
g
can reduce the output noise voltage.
3) The output offset voltage fluctuates when the signal source impedance R
g
is changed. A care must be taken
when using the circuit by directly connecting the volume to the input terminal. In such a case, the use of
coupling capacitor is recommended.
4) If a high frequency signal from tuners enters the input terminal as noise, insert a capacitor of approx. 0.01
μ
F
between the input terminal and input GND.
When a high frequency signal is inputted, malfunction of protective circuits may occur.
4. Ripple filter
1) In order to suppress the fluctuation of supply voltage, connect a capacitor of approx. 33
μ
F between RF
terminal (pin 12) and GND.
2) Relation between RR (ripple rejection ratio) and a capacitor
The larger the capacitance of a ripple filter is, the better the ripple rejection becomes.
3) Relation between the rise time of circuit and a capacitor
The larger the capacitance of a ripple filter is, the longer the time from the power-on (standby : high) to the
sound release becomes.
4) The DC voltage of output terminal is approximately the middle point of the ripple filter terminal voltage.
5) The internal circuit of ripple filter terminal is as shown in figure 4 and the charge current is approx. 3 mA to
10 mA.
4.7 k
30 k
200
6
11
400
15
μ
A
0.01
μ
F
1
μ
F
15
μ
A
Attenuator
To power
Input signal
Figure 3
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AN7194 | 制造商:PANASONIC 制造商全稱(chēng):Panasonic Semiconductor 功能描述:Dual BTL 50 W single power supply class-H power amplifier IC |
| AN7194K | 制造商:PANASONIC 制造商全稱(chēng):Panasonic Semiconductor 功能描述:Dual BTL 50 W single power supply class-H power amplifier IC |
| AN7194Z | 制造商:PANASONIC 制造商全稱(chēng):Panasonic Semiconductor 功能描述:Dual BTL 50 W single power supply class-H power amplifier IC |
| AN7195 | 制造商:PANASONIC 制造商全稱(chēng):Panasonic Semiconductor 功能描述:Dual 15 W BTL power IC for car audio |
| AN7195K | 制造商:PANASONIC 制造商全稱(chēng):Panasonic Semiconductor 功能描述:Dual 15 W BTL power IC for car audio |
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