PA6021

UNISONIC TECHNOLOGIES CO., LTD PA6021 2-W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL CMOS IC „ DESCRIPTION The PA6021 is a stereo audio power amplifier that drives 2 W/channel of continuous RMS power into a 4-Ω load when utilizing a heat sink. Advanced dc volume control minimizes external components and allows BTL (speaker) volume control and SE (headphone) volume control. The 20-pin DIP package allows for the use of a heatsink which provides higher output power. To ensure a smooth transition between active and shutdown modes, a fade mode ramps the volume up and down. DIP-20 Lead-free: PA6021L Halogen-free: PA6021G „ FEATURES * 2 W Into 4-W speakers with external heatsink * DC volume control with 2-dB * Steps from -40 dB ~ 20 dB * – Fade Mode * – -85-dB Mute Mode * Differential Inputs * 1-µA Shutdown Current (Typical) * Headphone Mode „ ORDERING INFORMATION Normal PA6021-D20-T Ordering Number Lead Free Plating PA6021L-D20-T Halogen Free PA6021G-D20-T Package DIP-20 Packing Tube www.unisonic.com.tw Copyright © 2008 Unisonic Technologies Co., Ltd 1 of 6 QW-R502-257.A PA6021 „ PIN CONFIGURATION CMOS IC PGND 1 ROUTPVDD RIN+ RIN- 2 3 4 5 VDD 6 LIN- 7 LIN+ 8 PVDD 9 LOUT- 10 20 ROUT+ 19 SE/BTL 18 VOLUME 17 AGND 16 BYPASS 15 FADE 14 SHUTDOWN 13 NC 12 LOUT+ 11 PGND „ PIN DESCRIPTION PIN # PIN NAME I/O 16 BYPASS I 15 17 7 8 10 12 13 1,11 3,9 5 4 2 20 19 FADE AGND LINLIN+ LOUTLOUT+ NC PGND PVDD RINRIN+ ROUTROUT+ SE/BTL I I I O O I I O...