PAM8803 Datasheet | Power Analog Micoelectronics

3W Filterless Stereo Class-D Audio Amplifier with Digital Volume Control Key Features .. General Description The PAM8803 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 ponents, the efficiency of the PAM8803 is much better than class-AB cousins. It can extend the battery life, ideal for portable applications. The PAM8803 is available in a SSOP-24 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 ponents to Save Space and Cost n Pb-Free Package Applications n n n n n LCD Monitors/TV Projectors Notebook puters Portable Speakers Portable DVD Players, Game Machines Cellular Phones/Speaker Phones Typical Application 100 90 VDD C1 1μF C2 1μF PVDD C3 10μF Efficiency vs Output Power Efficiency(%) 70 60 50 40 30 20 10 0 0 0.5 1 RL=4Ω RL=8Ω 7 4 VDD GND PVDD +OUT_L PGND PGND 21 +OUT_R 24 17 14 S1 C7 INR 0.47μF SP_L C6 INL 0.47μF 1 8 10 C8 1μF -OUT_L INL VREF -OUT_R INR SP_R 1.5 Output Pow er(W) Radiated Emissions ON MUTE ON SHDN MUTE 6 MUTE 19 SHDN NCNCNCNCPVDD 9 11 12 16 20 DN RST PGND...