PAM8404KGR

A Product Line of Diodes Incorporated PAM8404 3W/CH FILTERLESS STEREO CLASS-D AUDIO AMPLIFIER Description Pin Assignments The PAM8404 is a 3W high efficiency filterless Class-D audio amplifier in 4mmX4mm and 2mmX2mm wafer chip scale (WCSP) packages that requires few external components. Features like 89% efficiency, -63dB PSRR, improved RF-rectification immunity, and very small PCB area make the PAM8404 Class-D amplifier ideal for cellular handset and PDA applications. In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the PAM8404. The PAM8404 allows independent gain by summing signals from seperate sources, and has as low as 43µV noise floor. PAM8404 is available in QFN 4mmx4mm and WCSP 2mmx2mm packages. Features  3W Output at 10% THD with a 4Ω Load and 5V Supply  Supply Voltage from 2.5V to 5.5V  Efficiency Up to 89%  Superior Low Noise without Input  Few External Components to Save the Space and Cost  Short Circuit Protection  Thermal Shutdown   Space Saving Packages :  2mm X 2mmWCSP  4mm X 4mm Thin QFN Pb-Free Packages Applications  LCD Monitor / TV Projector  Notebook Computers  Portable Speakers  Portable DVD Players, Game Machines  Cellular Phones/Speaker Phones PAM8404 Document number: DSxxxxx Rev. 1 - 1 1 of 18 www.diodes.com November 2012 © Diodes Incorporated A Product Line of Diodes Incorporated PAM8404 Typical Applications Circuit Pin Descriptions Pin Name G1 OUTL+ PVDD PGND OUTLNC SDL SDR AVDD OUTROUTR+ G0 INR+ INRAGND INLINL+ QFN4x4 1 2 313 412 5 610 7 8 9 11 14 15 16 17 18 19 20 Pin Number WCSP2x2 B2 A3 A2 C4 A4 — B4 B3 D2 D4 D3 C2 D1 C1 C3 B1 A1 PAM8404 Document number: DSxxxxx Rev. 1 - 1 Function Gain Select (MSB) Left Channel Positive Differential Output Power Supply (Must be Same Voltage as AVDD) Power Ground Left Channel Negative Differential Output Not Connected Left Channel Shutdown Terminal (active low) Right Channel Shutdown Terminal (active low) Analog Supply (Must be Same Voltage as PVDD) Right Channel Negative Differential Output Right Channel Positive Differential Output Gain Select (LSB) Right Channel Positive Input Right Channel Negative Input Analog Ground Left Channel Negative Input Left Channel Positive Input 2 of 18 www.diodes.com November 2012 © Diodes Incorporated A Product Line of Diodes Incorporated PAM8404 Functional Block Diagram 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 Maximum Junction Temperature Storage Temperature Soldering Temperature Rating 6.0 Unit -0.3 to VDD +0.3 150 -65 to +150 250, 10sec V °C Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Parameter Supply Voltage Range Operation Temperature Range Junction Temperature Range PAM8404 Document number: DSxxxxx Rev. 1 - 1 Rating 2.5 to 5.5 -40 to +85 -40 to +125 Unit V °C °C 3 of 18 www.diodes.com November 2012 © Diodes Incorporated A Product Line of Diodes Incorporated PAM8404 Thermal Information Parameter Thermal Resistance (Junction to Ambient) Thermal Resistance (Junction to Case) Package WCSP2x2-16 QFN4x4-20 WCSP2x2-16 QFN4x4-20 Symbol θJA θJC Max 64 31 — 13 Unit °C/W Electrical Characteristics (@TA = +25°C, AVDD = PVDD = 5V, GND = PGND = 0V, unless otherwise specified.) QFN4X4-20 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 = 0.5W, RL = 8Ω THD+N Total Harmonic Distortion Plus Noise VDD = 3.6V, Po = 0.5W, RL = 8Ω VDD = 5.0V, Po = 1W, RL = 4Ω VDD = 3.6V, Po = 1W, RL = 4Ω PSRR CS SNR VN Dyn Power Supply Ripple Rejection VDD = 5.0V, Inputs AC-Grounded with CIN = 1.0μF Crosstalk VDD = 5V, Po = 0.5W, RL = 4Ω, Gv = 23dB Signal-to-Noise VDD = 5V, VORMS = 1VGv = 23dB Output Noise VDD = 5V, Inputs AC-Grounded with CIN = 1μF BW 22Hz – 22kHz Dynamic Range η Efficiency IQ Quiescent Current ISD RDS(ON) Shutdown Current Static Drain-to-Source On-State Resistor Typ 2.5 THD+N = 10%, f = 1kHz, RL = 4Ω PO Min Supply Power VDD = 5V, THD = 1% RL = 8Ω, THD = 10% RL = 4Ω, THD = 10% VDD = 5.0V VDD = 5.0V 3 VDD = 3.6V 1.5 VDD = 5.0V 2.35 VDD = 3.6V 1.2 VDD = 5.0V 1.7 VDD = 3.6V 0.9 VDD = 5.0V 1.4 VDD = 3.6V 0.7 f = 1kHz f = 1kHz VDD = 5.5V IDS = 500mA,VGS = 5V 0.27 0.23 0.24 Units 5.5 V W W W W % % f = 100kHz f = 1kHz -48 -63 dB f = 1kHz -93 dB A-weighting 87 dB A-weighting 43 No A-weighting 59 A-weighting 97 f = 1kHz No load VDD = 3.6V 0.15 Max VSD = 0.3V PMOS NMOS 89 84 11 6 µV dB % mA