Sharp HT-CN150DVW Service Manual page 83

HT-CN150DVW
IC501/IC502/IC503 2X50 W class-D power amplifier (TDA8921)
Pin Description:
Symbol Pin
V 1
negative analog supply voltage for channel 2
SSA2
SGND2 2 signal ground channel 2
V 3
positive analog supply voltage for channel 2
DDA2
IN2- 4 negative audio input for channel 2
IN2+ 5 positive audio input for channel 2
MODE 6 mode select input (standby/mute/operating)
OSC 7 oscillator frequency adjustment or tracking input
IN1+ 8 positive audio input for channel 1
IN1- 9 negative audio input for channel 1
V 10 positive analog supply voltage for channel 1
DDA1
SGND1 11 signal ground for channel 1
V 12 negative analog supply voltage for channel 1
SSA1
PROT 13 time constant capacitor for protection delay
V 14 positive power supply for channel 1
DDP1
BOOT1 15 bootstrap capacitor for channel 1
OUT1 16 PWM output from channel 1
V 17 negative power supply voltage for channel 1
SSP1
STABI 18 decoupling internal stabilizer for logic supply
HW 19 handle wafer; must be connected to pin 24
V 20 negative power supply voltage for channel 2
SSP2
OUT2 21 PWM output from channel 2
BOOT2 22 bootstrap capacitor for channel 2
V 23 positive power supply voltage for channel 2
DDP2
V 24 negative digital supply voltage
SSD
Description
Pin Configuration:
V SSD
V DDP2
BOOT2
OUT2
V SSP2
HW
STABI
V SSP1
OUT1
BOOT1
V DDP1
PROT
(1) Pin 19 should be connected to pin 24 in the application.
FIGURE 2 PIN CONFIGURATION
83
24 1 V
SSA2
SGND2
23 2
22 3 V
DDA2
IN2-
21 4
IN2+
20 5
MODE
19 6
TDA8921TH
TDA8920TH
OSC
18 7
IN1+
17 8
IN1-
16 9
15 10 V
DDA1
SGND1
14 11
13 12 V
SSA1
MBL462