HT82V739_08 Datasheet, PDF (1/10 Pages) Holtek Semiconductor Inc – 1200mW Audio Power Amp with Shutdown

HT82V739
1200mW Audio Power Amp with Shutdown
Features
· Operating voltage: 2.2V to 5.5V
· High signal-to-noise ratio
· Low distortion
· Large output voltage swing
· Low power consumption
· Output power 1200mW at 10% THD+N into 8W
(V_DD=5V)
Applications
· Applied for HT36 series, HT86 series and other
Holtek products
· Wide temperature operating range
· Low power-on and chip enable or disable POP noise.
· Low standby current
· Power off control
· Direct drive speaker
· 8-pin DIP/SOP package
General Description
HT82V739 is an integrated class AB mono speaker
driver contained in a 8-pin DIP/SOP package. The
HT82V739 is capable of delivering 1200mW 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.
Block Diagram
O U TN
R
A u d In
10R
AM P1
VREF
VSS
B IA S
VDD
R
AM P2
R
O U TP
CE
Pin Assignment
O U TN
A u d In
VREF
VSS
1
8
2
7
3
6
4
5
H T82V 739
8 D IP -A /S O P -A
VDD
O U TP
NC
CE
Pin Description
Pin No. Pin Name
1
OUTN
2
Aud In
3
VREF
4
VSS
5
CE
6
NC
7
OUTP
8
VDD
I/O
Description
O Negative output
I Audio input
O Speaker non-inverting input voltage reference
¾ Negative power supply, ground
I Chip enable, low active
¾ Not connected
O Positive output
¾ Positive power supply
Rev. 1.20
1
January 17, 2008