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TDA1557Q 데이터시트(Datasheet) 4 Page - NXP Semiconductors

부품명 TDA1557Q
상세내용  2 x 22 W BTL stereo car radio power amplifier with speaker protection
PDF  10 Pages
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제조사  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
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 4 page
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May 1992
4
Philips Semiconductors
Product specification
2 x 22 W BTL stereo car radio power
amplifier with speaker protection
TDA1557Q
PINNING
SYMBOL
PIN
DESCRIPTION
INP1
1
input 1
GND1
2
ground (signal)
VP1
3
supply voltage 1
OUT1A
4
output 1A
GND
5
power ground 1
OUT1B
6
output 1B
OUT2A
7
output 2A
GND
8
power ground 2
OUT2B
9
output 2B
VP2
10
supply voltage 2
M/SS
11
mute/stand-by switch
Vref
12
input reference voltage
INP2
13
input 2
Fig.2 Pin configuration.
handbook, halfpage
MCD322 - 1
1
2
3
4
5
6
7
8
9
10
11
12
13
TDA1557Q
INP1
GND1
P1
V
OUT1A
GND
OUT1B
OUT2A
OUT2B
INP2
GND
M / SS
ref
V
P2
V
FUNCTIONAL DESCRIPTION
The TDA1557Q contains two identical amplifiers with
differential input stages, and can be used for bridge
applications. The gain of each amplifier is fixed at 46 dB.
Special features of this device are:
a. mute/stand-by switch
low stand-by current
low mute/stand-by switching current (low cost supply
switch)
mute facility
b. loudspeaker protection
when a short circuit to ground is made, which forces a
DC voltage of
≥ 1 V across the loudspeaker, a built-in
protection circuit becomes active and limits the DC
voltage across the loudspeaker to
≤ 1 V
c. the harmonic distortion at low frequencies can be
decreased by connecting two diodes to ground at pin 12.




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