HT82V736 Datasheet, PDF (1/9 Pages) Holtek Semiconductor Inc – Stereo Headphone Driver with Mute

HT82V736
Stereo Headphone Driver with Mute
Features
· Operating voltage: 2.4V~6.0V
· Internal mute function to prevent power On/Off clicks
· Excellent power supply ripple rejection
· High slew rate
· Low total harmonic distortion
· Low power consumption
· Short circuit elimination
· Integrated voltage divider (V_DD/2) to eliminate
external resistors
· Wide temperature operating range
· 8-pin SOP package
Applications
· CD-ROM/RW, DVD-ROM/RW
· PDA, MP3
· Portable Digital Audio
· Discman, Camcorders
· Headphone Amplifier
General Description
The HT82V736 is a class AB stereo earphone driver de-
signed for portable digital audio application. It provides
an integrated mute function to prevent popping sounds
when power is turned on and off. In addition, the
HT82V736 further integrates a voltage divider, and
therefore the external resistors can be eliminated.
The HT82V736 has a fixed gain of 6dB so that external
gain setting is unnecessary. It is fully pin and functionally
compatible with BH3544 which is suitable for effective
low cost applications.
Block Diagram
M U TE
O U T1
IN 1
VDD
VSS
M u te
6dB
A
+
90kW
6dB
B
+
90kW
B ia s
O U T2
IN 2
B IA S
Pin Assignment
O U T1 ₁
M U TE ₂
IN 1 ₃
VSS ₄
8 ^VDD
7 ^{O U T2}
6 ^{B IA S}
5 ^{IN 2}
H T82V 736
8 S O P -A
Rev. 1.00
1
February 3, 2005