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參數資料
| 型號： | 935264190112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 55 W, 2 CHANNEL, AUDIO AMPLIFIER, PZIP13 |
| 封裝： | POWER, PLASTIC, SOT-141-6, DIL-BENT-SIL, 13 PIN |
| 文件頁數： | 13/18頁 |
| 文件大小： | 141K |
| 代理商： | 935264190112 |
1996 Jan 08
4
Philips Semiconductors
Product specication
2
× 40 W/2 stereo BTL car radio
power amplier with diagnostic facility
TDA8560Q
PINNING
SYMBOL
PIN
DESCRIPTION
IN 1
1
input 1
GND(S)
2
signal ground
VP1
3
supply voltage 1
OUT 1A
4
output 1A
GND1
5
power ground 1
OUT 1B
6
output 1B
OUT 2A
7
output 2A
GND2
8
power ground 2
OUT 2B
9
output 2B
VP2
10
supply voltage 2
MODE
11
mode switch input
VDIAG
12
diagnostic output
IN 2
13
input 2
Fig.2 Pin configuration.
1
2
3
4
5
6
7
8
9
10
11
12
13
MEA855 - 1
TDA8560Q
IN 1
GND(S)
V P1
OUT 1A
GND1
OUT 1B
OUT 2A
GND2
OUT 2B
VP2
MODE
IN 2
DIAG
V
FUNCTIONAL DESCRIPTION
The TDA8560Q contains two identical amplifiers and can
be used for bridge applications. The gain of each amplifier
is fixed at 40 dB. Special features of the device are as
follows.
Mode select switch (pin 11)
Standby: low supply current (<100 A)
Mute: input signal suppressed
Operating: normal on condition.
Since this pin has a very low input current (
<40 A), a low
cost supply switch can be applied.
To avoid switch-on plops, it is advised to keep the amplifier
in the mute mode during
≥100 ms (charging of the input
capacitors at pin 1 and pin 13).
This can be achieved by:
Microprocessor control
External timing circuit (see Fig.7).
Diagnostic output (pin 12)
DYNAMIC DISTORTION DETECTOR (DDD)
At the onset of clipping of one or more output stages, the
dynamic distortion detector becomes active and pin 12
goes low. This information can be used to drive a sound
processor or DC volume control to attenuate the input
signal and thus limit the distortion. The output level of
pin 12 is independent of the number of channels that are
clipping (see Fig.3).
Fig.3 Distortion detector waveform.
handbook, halfpage
V
0
VP
VO
0
t
MGA721
12
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