A Product Line of Diodes Incorporated PAM8007 FILTERLESS 3W CLASS-D STEREO AUDIO AMPLIFIER with DC VOLUME CONTROL and HEADPHONE OUTPUT Description Pin Assignments The PAM8007 is a 3W, Class-D audio amplifier with headphone amplifier. Advanced 64-Step DC volume control minimizes external components and allows speaker volume control and headphone volume control. It offers low THD+N, to produce high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, without 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 PAM8007 is much better than class-AB cousins. It can extend the battery life thus be ideal for portable applications. The PAM8007 is available in a SSOP-24 and SOP-24 package. Features 3W Output at 10% THD with a 4 Load and 5V Power Supply Filterless, Low Quiescent Current and Low EMI Low THD+N 64-Step DC Volume Control Headphone Output Function Superior Low Noise Low Pop Noise Efficiency Up to 92% Short Circuit Protection Thermal Shutdown Few External Components to Save the Space and Cost Pb-Free Package Applications LCD Monitors / TV Projectors Notebook Computers Portable Speakers Portable DVD Players, Game Machines VoIP/Speaker Phones 1 of 17 October 2012 PAM8007 Diodes Incorporated www.diodes.com Document number: DSxxxxx Rev. 1 - 2 A Product Line of Diodes Incorporated PAM8007 Typical Applications Circuit Pin Descriptions Pin Pin Function Number Name 1 -OUT L Left Channel Negative Output 2 PGNDL Left Channel Power GND 3 PGNDL Left Channel Power GND 4 +OUT L Left Channel Positive Output 5 PVDDL Left Channel Power Supply 6 MUTE Mute Control Input (active low) 7 VDD Analog VDD 8 INL Left Channel Input 9 EAR INL Left Earphone Input 10 VDC Analog Reference for Gain Control Section 11 VOLUME DC Volume Control to Set the Gain of Class-D 12 EAR OUT L Left Earphone Output(Non-Inverting) 13 EAR OUT R Right Earphone Output(Non-Inverting) 14 VREF Internal Analog Reference, connect a bypass capacitor from VREF to GND 15 LINE/EAR Line / Earphone Switch. Speaker Output (active low), Earphone Output (active high) 16 EAR LN R Right Earphone Input 17 INR Right Channel Input 18 GND Analog GND 19 SHDN Shutdown Control Input (active low) 20 PVDDR Right Channel Power Supply 21 +OUT R Right Channel Positive Output 22 PGNDR Right Channel Power GND 23 PGNDR Right Channel Power GND 24 -OUT R Right Channel Negative Output 2 of 17 October 2012 PAM8007 Diodes Incorporated www.diodes.com Document number: DSxxxxx Rev. 1 - 2