Tda8920 Ic Specification - Philips HTS3220/12/98 Service Manual

IC5: TDA8920 IC Specification
Block Diagram
V DDA2 V DDA1
3 10
9
IN1
INPUT PWM
8 STAGE MODULATOR
IN1+
mute
11
SGND1
7
OSC
OSCILLATOR MANAGER
6
MODE MODE
2
SGND2
mute
5
IN2+
INPUT PWM
4
STAGE MODULATOR
IN2
1 12
V SSA2 V SSA1
V DDP2 V DDP1
STABI PROT
1 8 1 3 23
RELEASE1
DRIVER
HIGH
SWITCH1
CONTROL
AND
ENABLE1
HANDSHAKE
DRIVER
LOW
STABI
V SSP1
TEMPERATURE SENSOR
TDA8920TH
V DDP2
CURRENT PROTECTION
DRIVER
ENABLE2
HIGH
CONTROL
SWITCH2
AND
HANDSHAKE
DRIVER
RELEASE2
LOW
24 19 17
V SSD V SSP1 V SSP2
HW
19-3
Pining
SYMBOL PIN
V 1
SSA2
1 4
15
BOOT1
SGND2 2
V 3
DDA2
16
OUT1
IN2 4
IN2+ 5
MODE 6
OSC 7
22
BOOT2
IN1+ 8
IN1 9
21
V 10
OUT2
DDA1
SGND1 11
V 12
SSA1
20
MBL461
PROT 13
V 14
DDP1
BOOT1 15
OUT1 16
V 17
SSP1
STABI 18
HW 19
V 20
SSP2
OUT2 21
BOOT2 22
V 23
DDP2
V 24
SSD
DESCRIPTION
negative analog supply voltage for
channel 2
signal ground channel 2
positive analog supply voltage for
channel 2
negative audio input for channel 2
positive audio input for channel 2
mode select input
(standby/mute/operating)
oscillator frequency adjustment or
tracking input
positive audio input for channel 1
negative audio input for channel 1
positive analog supply voltage for
channel 1
signal ground for channel 1
negative analog supply voltage for
channel 1
time constant capacitor for
protection delay
positive power supply for
channel 1
bootstrap capacitor for channel 1
PWM output from channel 1
negative power supply voltage for
channel 1
decoupling internal stabilizer for
logic supply
handle wafer; must be connected
to pin 24
negative power supply voltage for
channel 2
PWM output from channel 2
bootstrap capacitor for channel 2
(1) Pin 19 should be connected to pin 24 in the application.
positive power supply voltage for
channel 2
negative digital supply voltage
19-3
V SSD 24 1 V SSA2
V DDP2 23 2 SGND2
BOOT2 22 3 V DDA2
OUT2 21 4 IN2
V SSP2 20 5 IN2+
HW 19 6 MODE
TDA8920TH
STABI 18 7 OSC
V SSP1 17 8 IN1+
OUT1 16 9 IN1
BOOT1 15 10 V DDA1
V DDP1 14 11 SGND1
PROT 13 12 V SSA1
MBL462
Fig.2 Pin configuration.