SA6392 Datasheet, PDF (4/9 Pages) Silan Microelectronics Joint-stock – 4CHANNEL BTL DRIVER FOR CD PLAYERS

SA6392
(Continued)
Pin no
Symbol
Description
10
IN2R
Driver channel 2 reverse input
11
IN2RC
Connect to attached resistor/capacitor (2)
12
OUT2R
Driver channel 2 reverse output
13
OUT2F
Driver channel 2 forward output
14
GND
Ground
15
MUTE
Driver mute control input
16
OUT3F
Driver channel 3 forward output
17
OUT3R
Driver channel 3 reverse output
18
IN3RC
Connect to attached resistor/capacitor (3)
19
IN3R
Driver channel 3 reverse input
20
IN3F
Driver channel 3 forward input
21
VCC
Power supply
22
VCC
Power supply
23
INB
Driver channel 4 bias input*
24
INS
Driver channel 4 input
25
INB
Driver channel 4 bias input*
26
OUT4R
Driver channel 4 reverse output
27
OUT4F
Driver channel 4 forward output
28
GND
Ground
* Pin 23 and pin 25 shorted internally.
FUNCTION DESCRIPTION
CIRCUIT OPERATION
(1) Fig. 2 shows the inputs from the digital servo IC for CH1-CH3 drivers (all drivers except the spindle).
SW1 is on when the forward input signal (HIGH level, over 2.4V) is present. SW2 is on when the reverse input
signal is present (Fig. 1)
The constant current (I1 ) at this time enters the RC and generates an integral waveform based on the duty of
the input waveform. The BTL is output from BUF1 and BUF2 (Fig. 3).
Fig.1
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.2 2004.02.12
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