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SA58631 Datasheet(PDF) 3 Page - NXP Semiconductors

Part No. SA58631
Description  3 W BTL audio amplifier
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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SA58631 Datasheet(HTML) 3 Page - NXP Semiconductors

 
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SA58631
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Preliminary data sheet
Rev. 01 — 1 December 2005
3 of 19
Philips Semiconductors
SA58631
3 W BTL audio amplifier
7.
Pinning information
7.1 Pinning
7.2 Pin description
8.
Functional description
The SA58631 is a single channel BTL audio amplifier capable of delivering 3 W output
power to an 8
Ω load at THD + N = 10 % using a 9 V power supply. Using the MODE pin,
the device can be switched to standby and mute condition. The device is protected by an
internal thermal shutdown protection mechanism. The gain can be set within a range of
6 dB to 30 dB by external feedback resistors.
8.1 Power amplifier
The power amplifier is a Bridge Tied Load (BTL) amplifier with a complementary
PNP-NPN output stage. The voltage loss on the positive supply line is the saturation
voltage of a PNP power transistor, on the negative side the saturation voltage of an NPN
power transistor. The total voltage loss is < 1 V. With a supply voltage of 9 V and an 8
loudspeaker, an output power of 3 W can be delivered to the load.
Fig 2.
Pin configuration for HVSON8
002aac006
OUT
IN
VCC
IN+
GND
SVR
OUT+
MODE
Transparent top view
5
4
6
3
7
2
8
1
terminal 1
index area
SA58631TK
Table 3:
Pin description
Symbol
Pin
Description
MODE
1
operating mode select (standby, mute, operating)
SVR
2
half supply voltage, decoupling ripple rejection
IN+
3
positive input
IN
4
negative input
OUT
5
negative output terminal
VCC
6
supply voltage
GND
7
ground
OUT+
8
positive output terminal


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