MAX9713/MAX9714 19-3039 Rev 6 12/06 6W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers General Description Features Filterless Class D Amplifier The MAX9713/MAX9714 mono/stereo Class D audio power amplifiers provide Class AB amplifier performance Unique Spread-Spectrum Mode Offers 5dB with Class D efficiency, conserving board space and Emissions Improvement Over Conventional eliminating the need for a bulky heatsink. Using a Class Methods D architecture, these devices deliver up to 6W while Up to 85% Efficient offering greater than 85% efficiency. Proprietary and pro- 6W Output Power into 8 tected modulation and switching schemes render the tra- ditional Class D output filter unnecessary. Low 0.07% THD+N High PSRR (76dB at 1kHz) The MAX9713/MAX9714 offer two modulation schemes: a fixed-frequency mode (FFM), and a spread-spectrum 10V to 25V Single-Supply Operation mode (SSM) that reduces EMI-radiated emissions due Differential Inputs Minimize Common-Mode Noise to the modulation frequency. The device utilizes a fully Pin-Selectable Gain Reduces Component Count differential architecture, a full bridged output, and com- prehensive click-and-pop suppression. Industry-Leading Integrated Click-and-Pop Suppression The MAX9713/MAX9714 feature high 76dB PSRR, low Low Quiescent Current (18mA) 0.07% THD+N, and SNR in excess of 95dB. Short-cir- cuit and thermal-overload protection prevent the Low-Power Shutdown Mode (0.2A) devices from being damaged during a fault condition. Short-Circuit and Thermal-Overload Protection The MAX9713 is available in a 32-pin TQFN (5mm x Available in Thermally Efficient, Space-Saving 5mm x 0.8mm) package. The MAX9714 is available in a Packages 32-pin TQFN (7mm x 7mm x 0.8mm) package. Both 32-Pin TQFN (5mm x 5mm x 0.8mm)MAX9713 devices are specified over the extended -40C to 32-Pin TQFN (7mm x 7mm x 0.8mm)MAX9714 +85C temperature range. Applications Ordering Information LCD Monitors High-End Notebook PART TEMP RANGE PIN-PACKAGE AMP Audio LCD TVs o o 32 TQFN-EP* MAX9713ETJ+ -40 C to +85 C Mono Hands-Free Car o o Desktop PCs 32 TQFN-EP* MAX9714ETJ+ -40 C to +85 C Stereo Phone Adaptors LCD Projectors *EP = Exposed paddle. +Denotes lead-free package. Block Diagrams 0.47F MAX9714 INL+ OUTL+ H-BRIDGE 0.47F MAX9713 INL- OUTL- 0.47F IN+ OUT+ H-BRIDGE 0.47F 0.47F OUT- IN- INR+ OUTR+ H-BRIDGE 0.47F INR- OUTR- Pin Configurations appear at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE6W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) Continuous Power Dissipation (T = +70C) A V to PGND, AGND .............................................................30V Single-Layer Board: DD OUTR , OUTL , C1N..................................-0.3V to (V + 0.3V) MAX9713 32-Pin TQFN (derate 21.3mW/C DD C1P............................................(V - 0.3V) to (CHOLD + 0.3V) above +70C)..........................................................1702.1mW DD CHOLD........................................................(V - 0.3V) to +40V MAX9714 32-Pin TQFN (derate 27mW/C DD All Other Pins to GND.............................................-0.3V to +12V above +70C)..........................................................2162.2mW Duration of OUTR /OUTL Multilayer Board: Short Circuit to GND, V ......................................Continuous MAX9713 32-Pin TQFN (derate 34.5mW/C DD Continuous Input Current (V , PGND, AGND) ...................1.6A above +70C)..........................................................2758.6mW DD Continuous Input Current (all other pins)..........................20mA MAX9714 32-Pin TQFN (derate 37mW/C above +70C)..........................................................2963.0mW Junction Temperature......................................................+150C Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = 15V, GND = PGND = 0V, SHDN V , A = 16dB, C = C = 0.47F, C = 0.01F, C1 = 100nF, C2 = 1F, FS1 = FS2 = DD IH V SS IN REG GND (f = 330kHz), R connected between OUTL+ and OUTL- and OUTR+ and OUTR-, T = T to T , unless otherwise noted. S L A MIN MAX Typical values are at T = +25C.) (Notes 1, 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS GENERAL Supply Voltage Range V Inferred from PSRR test 10 25 V DD MAX9713 10 17.5 Quiescent Current I R = mA DD L MAX9714 18 23 Shutdown Current I 0.2 1.5 A SHDN C = 470nF 100 SS Turn-On Time t ms ON C = 180nF 50 SS Amplifier Output Resistance in SHDN = GND 150 330 k Shutdown A = 13dB 35 58 80 V A = 16dB 30 48 65 V Input Impedance R k IN A = 19.1dB 23 39 55 V A = 22.1dB 20 31 42 V G1 = L, G2 = L 21.9 22.1 22.3 G1 = L, G2 = H 18.9 19.1 19.3 Voltage Gain A dB V G1 = H, G2 = L 12.8 13 13.2 G1 = H, G2 = H 15.9 16 16.3 Gain Matching Between channels (MAX9714) 0.5 % Output Offset Voltage V 6 30 mV OS Common-Mode Rejection Ratio CMRR f = 1kHz, input referred 60 dB IN V = 10V to 25V 54 76 DD Power-Supply Rejection Ratio PSRR f = 1kHz 76 dB RIPPLE (Note 3) 200mV ripple P-P f = 20kHz 60 RIPPLE 2 MAX9713/MAX9714