PAM8403QT

PAM8403 Filterless 3W Class-D Stereo Audio Amplifier Key Features n 3W Output at 10% THD with a 4Ω Load and 5V Power Supply n Filterless, Low Quiescent Current and Low EMI n Low THD+N n Superior Low 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 LCD Monitors / TV Projectors n Notebook Computers n Portable Speakers n Portable DVD Players, Game Machines n Cellular Phones/Speaker Phones General Description The PAM8403 is a 3W, class-D audio amplifier. It offers low THD+N, allowing it to produce highquality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, without needing low-pass output filters, which will save the system cost and PCB area. With the same numbers of external components, the efficiency of the PAM8403 is much better than class-AB cousins. It can extend the battery life, ideal for portable applications. The PAM8403 is available in a DIP-16 and SOP16 packages. Typical Application VDD PVDD 1uF 1uF 470uF 1uF 13 4 6 0.47uF Ri INL 7 INL VDD PVDD PVDD 1 -OUT_L 8 VREF 1uF 0.47uF Ri INR 10 INR 3 +OUT_L PAM8403 14 +OUT_R SHDN MUTE 12 SHDN 5 MUTE 16 -OUT_R GND GND PGND PGND 11 9 2 15 Efficiency(%) Efficiency vs Output Power 100 90 80 70 RL=8Ω 60 RL=4Ω 50 40 30 20 10 0 0 0.5 1 1.5 2 2.5 3 Output Pow er(W) Radiated Emissions FCC Class B Limit Power Analog Microel...