PAM8407 EVB User Guide PAM8407 EV Board User Guide AE Department 1. Revision Information Date Revision Description 2013/10 V1.0 Initial release Comment This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8407 Document number: DSxxxxx Rev. 1 - 0 1 of 6 www.diodes.com October 2013 © Diodes Incorporated PAM8407 EVB User Guide 2. Key Features 3W Output at 10% THD with a 4Ω load and 5V Power Supply 2.4W Output at 1% THD with a 4Ω Load and 5V Power Supply Filterless, Low Quiescent Current and Low EMI Low THD+N 32-step Digital Volume Control from -80dB(mute) to 24dB Superior Low Noise: 60uV Minimize Pop/Clip Noise High Efficiency up to 90% Auto Recovery Short Circuit Protection Thermal Shutdown Pb-Free Package 3. EV Board Schematic C9 TP1 C1 RINP C2 RINN 1 2 IC1 R1 R2 SD SD UP VDD SD DOWN 3 1 2 3 4 5 6 C3 LINN C4 LINP R5 R3 R4 7 RINP C5 VDD RINN ROUTP SD ROUTN UP GND DOWN GND GND LOUTN LINN LOUTP C6 16 15 14 ROUTP VDD ROUTP ROUTN LINP VDD FB2 C12 2 C11 C13 TP3 R7 LOUTN LOUTP LOUTN VDD 8 1 TP2 12 10 ROUT FB1 R6 ROUTN 13 11 C10 9 LOUTP C7 C8 C14 LOUT FB3 1 FB4 2 R8 C16 C15 TP4 This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8407 Document number: DSxxxxx Rev. 1 - 0 2 of 6 www.diodes.com October 2013 © Diodes Incorporated PAM8407 EVB User Guide 4. EV-Board PAM8407 EB37AA Description PAM8407 EB37AA is designed for evaluated PAM8407. The PAM8407 is a 3W, class-D audio amplifier. Advanced 32-step Digital volume control minimizes external components and allows speaker volume control. The board is targeted to be used in providing a simple and convenient evaluation environment for the PAM8407. 5. EV Board View and Jack Description Ground Power Supply R-CH Positive Input R-CH Negative Input R-CH Positive Output R-CH Single-ended signal Input R-CH Negative Output L-CH L-CH Single-ended Negative Output signal Input L-CH Positive Output L-CH Negative L-CH Positive Input SD Control Volume UP Control Volume DOWN Control This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8407 Document number: DSxxxxx Rev. 1 - 0 3 of 6 www.diodes.com October 2013 © Diodes Incorporated PAM8407 EVB User Guide 6. EV board operational sequence: a. Connect SD to a high for normal operation. b. To use the PAM8407 with a differential source, connect the positive lead of the audio source to the INP input and the negative lead of the audio source to the INN input. To use the PAM8407 with a single-ended source, the INN input should be ac- grounded. c. Connect the loading(speaker or power resistor) to the output jack. d. Power on: 2.7V to 5.5V DC power supply. 7. EV Board BOM List Item Value Type Rating Description Vender and port C1,C2, C3,C4 0.1uF X5R/X7R, Ceramic/0603 25V Input coupling CAP TAIYO YUDEN C5, C7 1uF X5R/X7R, Ceramic/0603 25V VDD coupling CAP, C6, C8 10uF X5R/X7R, Ceramic/0805 16V VDD main coupling CAP, R1,R2, R3,R4 0ohm 0603 1% Input Resistor IC1 PM8407 SOP-16L UMK212B7104KG-T TAIYO YUDEN TMK107B7105KA-T TAIYO YUDEN EMK212ABJ106KD-T This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8407 Document number: DSxxxxx Rev. 1 - 0 4 of 6 www.diodes.com October 2013 © Diodes Incorporated PAM8407 EVB User Guide 8. PCB Layout Example Top layer This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8407 Document number: DSxxxxx Rev. 1 - 0 5 of 6 www.diodes.com October 2013 © Diodes Incorporated PAM8407 EVB User Guide Bottom layer This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. PAM8407 Document number: DSxxxxx Rev. 1 - 0 6 of 6 www.diodes.com October 2013 © Diodes Incorporated