HT82V735
330mW Stereo Audio Power Amp With Shutdown
Features
·
Operating voltage: 2.4V~6.0V
·
Very low standby current 0.5mA (Typ.)
·
High signal-to-noise ratio
·
High slew rate
·
Output power 330mW at 10% THD+N into 8W
·
Excellent power supply ripple rejection
·
Low power consumption
·
Wide temperature operating range
·
Direct drive speaker
·
Shutdown function
·
8-pin SOP package
Applications
·
CD ROM DVD player
·
Notebook/Desktop PC
·
Portable Audio Device
·
Headphone Amplifier
·
Microphone Pre-amplifier
·
Discman/MP3
General Description
HT82V735 is a class AB stereo earphone driver de-
signed for portable digital audio application. Pin assign-
ments and application circuits are compatible with
LM4880 which is suitable for effective low cost applica-
tions. The HT82V735 can deliver a maximum of 330mW
Output power to an 8W load with less than 10%
(THD+N) from a 5V power supply. The very low standby
current in shutdown mode contributes to the reduction of
power consumption of battery-powered equipments. It
provides 8-SOP package.
Block Diagram
O U T 1
A
+
IN 1
B IA S
B
+
IN 2
V D D
O U T 2
Pin Assignment
O U T 1
1
8
2
7
3
6
4
5
IN 1
B IA S
V S S
V D D
O U T 2
IN 2
C E
H T 8 2 V 7 3 5
8 S O P -A
V S S
P o w e r D o w n
C E
Pin Description
Pin No. Pin Name I/O
1
2
3
4
5
6
7
8
OUT1
IN1
BIAS
VSS
CE
IN2
OUT2
VDD
O
I
I
Channel 1 output pin
Channel 1 Audio input
Supports a voltage driver for internal bias
Description
¾
Negative power supply, ground
I
I
O
Power down mode when held high, I (power down) =1mA
Channel 2 Audio input
Channel 2 output pin
¾
Positive power supply
Rev. 1.10
1
February 18, 2004
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
