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www.fairchildsemi.com
Features
Up to 4W/channel
Drives 8
NO-POP during power-up/power-down and mute
Provides regulated 5V supply for sound codec, etc.
Line Output signal to noise ratio of 85 dB
Microphone amplifier and AGC dynamic range of 40dB
Microphone multiplexing
Internal thermal limiting circuitry
24 Lead SOIC package
Total Harmonic Distortion < 0.1%
W
and 4
W
non-powered speakers
Applications
Multimedia PC motherboards and add-in sound cards
Companion chip to Sigma-Delta Sound Codecs
Sound Channel back-end in Set-top boxes
Description
The Rapper is a stereo sound driver used for driving key
functions that are needed in all multimedia PCs and sound
cards. These functions include directly powering speakers
and headphone sets, providing a microphone pre-amplifier
with AGC, and having a 12V to 5V regulator that can isolate
the noise from the sound channel.
Block Diagram
65-5513-01
Soft Start
Thermal
Logic
12 to 5V
Regulator
5V Mic
Supply
LLINE
SPKAMPINR
RLINE
SPKOUTR
SPKAMPINL
SPKOUTL
SFTSTART
SPKMUTE
RIN
LIN
VCC
REGOUT
REGSEN
+1
+1
-4
-4
RC5513
RAPPER
MICOUT
AGC
MUX
AGCTC
MICSEL
·
MICIN1
MICIN2
+1
-10
RC5513
RAPPER
Family – 4 Watt S tereo S ound Driver
Rev. 0.9.4