HT82V736 Datasheet | Holtek Semiconductor

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 (VDD/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 designed 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 6d B so that external gain setting is unnecessary. It is fully pin and functionally patible with BH3544 which is suitable for effective low cost applications. Block Diagram M U T E O U T 1 6 d B A + 9 0 k W M u te O U T 2 B + IN 2 B ia s B IA S 9 0 k W 6 d B IN 1 V D D V S S Pin Assignment O U T 1 1 8 2 7 3 6 4 5 M U T E IN 1 V S S V D D O U T 2 B IA S IN 2 H T 8 2 V 7 3 6 8 S O P -A Rev. 1.00 February 3, 2005 Pin Description Pin No. 1 2 3 4 5 6 7 8 Pin Name OUT1 MUTE IN1 VSS IN2 BIAS OUT2 VDD I/O O I I ¾ I I O ¾ Channel 1 output pin Mute control (Mute On: low; Mute Off: high) Audio input channel 1 Negative power supply, ground Audio input channel 2 VDD/2 connected a capacitor to ground to eliminate power On/Off clicks Channel 2 output pin Positive power supply Description .. Absolute Maximum Ratings Supply Voltage VSS-0.3V to VSS+7.0V Input Voltage VSS-0.3V to VDD+0.3V Storage Temperature -50°C to 125°C Operating Temperature -40°C to 85°C Note: These are stress ratings only. Stresses exceeding the...