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PRODUCT SPECIFICATION
RC5501
2
P
Functional Description
The RC5501 stereo sound driver is an audio device that can
be used on PC motherboards and add-in sound cards. It con-
sists of stereo output drivers for headphone or speakers with
a mute feature and circuitry that eliminates popping at power
on, power off, mute enable, and mute disable.
The output drivers can deliver up to 2 Watts peak and 4 Watts
peak into 8
W
and 4
W
speakers, respectively, from a 12V
source. The drivers use class AB amplifiers and maintain a
low bias current. To help prevent turn-on speaker pop, a
delay is provided to these output drivers to allow settling
before speaker activation. The time constant is user-defined
through an external capacitor (C
pin.
DELAY
) on the SFTSTART
The thermal limiting circuitry activates if the chip tempera-
ture typically exceeds 150
°
C.
Pin Assignments
Pin Definitions
Pin Name
PGNDL
SPKOUTL
VCCL
SPKRMUTE
SPKAMPINL
VCC
N/C
GND
SPKAMPINR
VCCR
SFTSTART
SPKOUTR
PGNDR
Pin Number
1
2
3
4
5
6
7, 9
8
10
11
12
13
14
Pin Function Description
Left speaker ground.
Left speaker output.
Left speaker 12V power supply.
Speaker mute.
Left channel power amp input.
12V power supply input.
No connection.
Ground.
Right channel power amp input.
Right speaker 12V power supply.
Soft start timing capacitor.
Right speaker output.
Right speaker ground.
65-5501-02
PGNDL
SPKOUTL
VCCL
SPKRMUTE
SPKAMPINL
VCC
N/C
PGNDR
SPKOUTR
SFTSTART
VCCR
SPKAMPINR
N/C
GND
14
13
12
11
10
9
8
1
2
3
4
5
6
7
RC5501