PAM8302A

PAM8302A 2.5W Filterless Class-D Mono Audio Amplifier Key Features www.datasheet4u.com and 5V General Description The PAM8302A is a 2.5W class-D mono audio amplifier. Its low THD+N feature offers highquality sound reproduction. The new filterless architecture allows the device to drive speaker directly instead of using low-pass output filters, therefore save system cost and PCB area. With the same number of external components, the efficiency of the PAM8302A is much better than that of class-AB cousins. It can optimize battery life thus is ideal for portable applications. The PAM8302A is available in MSOP-8, SOP-8 and DFN3x3 packages. n 2.5W Output at 10% THD with a 4 Ω Load Power Supply n Filterless, Low Quiescent Current and Low EMI n High Efficiency up to 88% n Superior Low Noise n Short Circuit Protection n Thermal Shutdown n Few External Components to Save Space and Cost n MSOP-8, SOP-8 and DFN3x3 Packages Available n Pb-Free Package Applications n n n n n n PMP/MP4 GPS Portable Speakers Walkie Talkie Handsfree phones/Speaker Phones Cellular Phones Typical Application 1μF 6 VDD Ci INDifferential Input Ci IN+ ON OFF Ri Ri 4 INVO- 8 3 1 PAM8302A IN+ VO+ /SD GND 5 7 Power Analog Microelectronics , Inc www.poweranalog.com 1 09/2008 Rev 1.2 PAM8302A 2.5W Filterless Class-D Mono Audio Amplifier Block Diagram VDD www.datasheet4u.com IN+ MODULATOR DRIVER VO+ VO- IN- THERMAL PROTECTION SD SHUTDOWN INTERNAL OSCILLATOR SHORT PROTECTION OSC GND Pin Confi...