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參數(shù)資料
| 型號(hào)： | AN7191NZ |
| 廠商： | PANASONIC CORP |
| 元件分類： | 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 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 146K |
| 代理商： | AN7191NZ |
11
ICs for Audio Common Use
AN7191NZ
I
Technical Information (continued)
[2] Application note
1. Standby function
1) The power can be turned on or off by making
pin 5 (standby terminal) high or low.
2) The standby terminal has threshold voltage of
approx. 2.1 V, however, it has temperature de-
pendency of approx.
6 mV/
°
C. The recom-
mended range of use is shown in table 1.
3) The internal circuit of standby terminal is as shown in figure 1. When the standby terminal is high, the current
approximately expressed by the following equation will flow into the circuit.
I
STB
=
V
STB
2.7 V
[mA]
10 k
4) A power supply with no ripple component should be used for the control voltage of standby terminal.
2. Oscillation countermeasures
1) In order to increase the oscillation allowance, connect a capacitor and a resistor in series between each output
terminal and GND as shown in figure 2.
2) The use of polyester film capacitor having a little fluctuation with temperature and frequency is recom-
mended as the 0.22
μ
F capacitor for oscillation prevention.
Terminal state Terminal voltage
Power
Open
0 V
Standby state
Low
0 V to 1.0 V
Standby state
High
Higher than 3 V
Operating state
Table 1
3.5
k
3.5
k
3.5
k
3.5
k
10 k
5 V
0 V
5
RF
Protection
circuit
Sub
Constant
current source
V
STB
Figure 1
2.2
0.22
μ
F
2,4
1
13,15
3,14
Figure 2
To speaker
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| AN7195 | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:Dual 15 W BTL power IC for car audio |
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