PAM8803S

PAM8803S Filterless 3W Class-D Stereo Audio Amplifier with Digital Volume Control Key Features www.datasheet4u.com General Description The PAM8803S is a 3W, class-D audio amplifier with 64-step digital volume control. It offers low THD+N, allowing it to produce high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, without needing low-pass output filters , which will save 30% system cost and 75% PCB area. With the same numbers of external components, the efficiency of the PAM8803S is much better than class-AB cousins. It can extend the battery life, ideal for portable applications. The PAM8803S is available in a SSOP24 package. n 3W Output at 10% THD with a 4 Ω Load and 5V Power Supply n Filterless, Low Quiescent Current and Low EMI n Low THD+N n 64-step Digital Volume Control n Superior Low Noise n Low pop noise n Efficiency up to 90% n Short Circuit Protection n Thermal Shutdown n Few External Components to Save the Space and Cost n Pb-Free Package Applications n n n n n LCD Monitors / TV Projectors Notebook Computers Portable Speakers Portable DVD Players, Game Machines Cellular Phones/Speaker Phones Typical Application VDD PVDD C3 1uF Efficiency vs Output Power 100 90 80 Efficiency(%) 3 C1 1uF C2 10u F VDD GND 4 +OUT_L 7 18 PVDD 5 PGND 2 70 60 50 40 30 20 10 0 0 0.5 1 RL=4Ω RL=8Ω PGND +OUT_R 21 SP _L C6 INL 1 -OUT_L -OUT_R 24 C7 SP _R 8 INL INR 17 INR 0.4 7uF 10 C8 1uF PAM8803S V...