PAM8403DR

A Product Line of Diodes Incorporated PAM8403 FILTERLESS 3W CLASS-D STEREO AUDIO AMPLIFIER Description Pin Assignments The PAM8403 is a 3W, class-D audio amplifier. It offers low THD+N, allowing it to achieve high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area. With the same numbers of external components, the efficiency of the PAM8403 is much better than that of Class-AB cousins. It can extend the battery life, which makes it well-suited for portable applications. The PAM8403 is available in SOP-16 package. Features  3W Output at 10% THD with a 4Ω Load and 5V Power Supply  Filterless, Low Quiescent Current and Low EMI  Low THD+N  Superior Low Noise  Efficiency up to 90% Applications  Short Circuit Protection  Thermal Shutdown  LCD Monitors / TV Projectors  Few External Components to Save the Space and Cost  Notebook Computers  Pb-Free Package  Portable Speakers  Portable DVD Players, Game Machines  Cellular Phones/Speaker Phones Typical Applications Circuit PAM8403 Document number: DSxxxxx Rev. 1 - 4 1 of 11 www.diodes.com November 2012 © Diodes Incorporated A Product Line of Diodes Incorporated PAM8403 Pin Descriptions Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name +OUT_L PGND -OUT_L PVDD MUTE VDD INL VREF NC INR GND SHND PVDD -OUT_R PGND +OUT_R Function Left Channel Positive Output Power GND Left Channel Negative Output Power VDD Mute Control Input (active low) Analog VDD Left Channel Input Internal analog reference, connect a bypass capacitor from VREF to GND. No Connact Right Channel Input Analog GND Shutdown Control Input (active low) Power VDD Right Channel Negative Output Power GND Right Channel Positive Output Functional Block Diagram PAM8403 Document number: DSxxxxx Rev. 1 - 4 2 of 11 www.diodes.com November 2012 © Diodes Incorporated A Product Line of Diodes Incorporated PAM8403 Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Parameter Supply Voltage Input Voltage Operation Temperature Range Maximum Junction Temperature Operation Junction Temperature Storage Temperature Soldering Temperature Rating 6.0 Unit V -0.3 to VDD +0.3V -40 to +85 150 -40 to +125 -65 to +150 300, 5 sec °C Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Parameter Supply Voltage Range Operation Temperature Range Junction Temperature Range Rating 2.5 to 5.5 -40 to +85 -40 to +125 Unit V °C °C Thermal Information Parameter Package Symbol Max Thermal Resistance (Junction to Ambient) SOP-16 θJA 110 Thermal Resistance (Junction to Case) SOP-16 θJC 23 PAM8403 Document number: DSxxxxx Rev. 1 - 4 3 of 11 www.diodes.com Unit °C/W November 2012 © Diodes Incorporated A Product Line of Diodes Incorporated PAM8403 Electrical Characteristics (@TA = +25°C, VDD = 5V, Gain = 24dB, RL = 8Ω, unless otherwise specified.) Symbol VDD Parameter Test Conditions THD+N = 1%, f = 1KHz, RL = 4Ω Output Power THD+N = 10%, f = 1KHz, RL = 8Ω THD+N = 1%, f = 1KHz, RL = 8Ω VDD = 5.0V, PO = 1W, RL = 8Ω THD+N Total Harmonic Distortion Plus Noise VDD = 3.6V, PO = 0.1W, RL = 8Ω VDD = 5.0V, PO = 0.5W, RL = 4Ω VDD = 3.6V, PO = 0.2W, RL = 4Ω GV PSRR CS SNR Closed Loop Gain VDD = 5.0V 3.2 VDD = 3.6V 1.6 VDD = 3.2V 1.3 VDD = 5.0V 2.5 VDD = 3.6V 1.3 VDD = 3.2V 0.85 VDD = 5.0V 1.8 VDD = 3.6V 0.9 VDD = 3.2V 0.6 VDD = 5.0V 1.4 VDD = 3.6V 0.72 VDD = 3.2V 0.45 V W W W W % 0.15 % 0.11 VDD = 3V to 5V 24 dB -59 -58 dB -95 dB Power Supply Ripple Rejection VDD = 5.0V, Inputs AC-Grounded with CIN = 0.47µF f = 100Hz f = 1kHz Crosstalk VDD = 5.0V, PO = 0.5W, RL = 8Ω, GV = 20db f = 1kHz Signal-to-Noise Ratio VDD = 5.0V, VORMS = 1V, GV = 20db f = 1kHz 80 dB 100 150 µV 90 dB Output Noise VDD = 5.0V, Inputs AC-Grounded with CIN = 0.47µF Dyn Dynamic Range VDD = 5.0V, THD = 1% f = 1kHz η Efficiency IQ Quiescent Current RL = 8Ω, THD = 10% RL = 4Ω, THD = 10% 87 f = 1kHz % 83 16 VDD = 5.0V No Load VDD = 3.6V mA 10 8 VDD = 3.0V RDS(ON) Units 5.5 0.11 f = 1kHz VN ISD Max 0.15 f = 1kHz No A-Weighting A-Weighting IMUTE Typ 2.5 THD+N = 10%, f = 1KHz, RL = 4Ω PO Min Supply Voltage Muting Current VDD = 5.0V VMUTE = 0.3V 3.5 mA Shutdown Current VDD = 2.5V to 5.5V VSD = 0.3V PMOS NMOS