MAX9716/MAX9717 19-3146 Rev 3 3/12 Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers General Description Features The MAX9716/MAX9717 audio power amplifiers are ideal 2.7V to 5.5V Single-Supply Operation for portable audio devices with internal speakers. A 1.4W into 4 at 1% THD+N bridge-tied load (BTL) architecture minimizes external 10nA Low-Power Shutdown Mode component count, while providing high-quality audio reproduction. Both devices deliver 1.4W continuous 73dB PSRR at 1kHz power into a 4 load with less than 1% Total Harmonic No Audible Clicks or Pops at Power-Up/Down Distortion (THD) while operating from a single +5V sup- Internal Fixed Gain to Reduce Component Count ply. With an 8 load, both devices deliver 1W continuous (MAX9717B/C/D) power. These devices also deliver 350mW continuous power into an 8 load while operating from a single Adjustable Gain Option (MAX9716/MAX9717A) +3.0V supply. The devices are available as adjustable BTL /SE Input Senses when Headphones are gain amplifiers (MAX9716/MAX9717A) or with internally Connected (MAX9717) fixed gains of 6dB, 9dB, and 12dB (MAX9717B/ Pin Compatible with LM4890 (MAX9716) MAX9717C/MAX9717D), reducing component count. Pin Compatible with TPA711 (MAX9717A) A low-power shutdown mode disables the bias generator and amplifiers, reducing quiescent current consumption Available in Compact, Thermally Enhanced MAX to less than 10nA. These devices feature Maxims and TDFN (3mm x 3mm) Packages industry-leading, comprehensive click-and-pop sup- pression that reduces audible clicks and pops during Ordering Information startup and shutdown. The MAX9717 features a headphone sense input (BTL/SE) PIN- GAIN PART TEMP RANGE that senses when a headphone is connected to the PACKAGE (dB) device, disables the BTL slave driver, muting the speaker MAX9716ETA+T -40C to +85C 8 TDFN-EP* Adj. while driving the headphone as a single-ended load. MAX9716EBL+TG45 -40C to +85C 3 x 3 UCSP Adj. The MAX9716 is pin compatible with the LM4890 and is MAX9716EUA -40C to +85C 8 MAX-EP* Adj. available in 9-bump UCSP, 8-pin TDFN (3mm x MAX9716EUA/V+ -40C to +85C 8 MAX-EP* Adj. 3mm), and 8-pin MAX packages. The MAX9717 is available in 9-bump UCSP, 8-pin TDFN, and 8-pin *EP = Exposed pad. MAX packages. Both devices operate over the -40C +Denotes a lead(Pb)-free/RoHS-compliant package. G45 indicates protective die coating. to +85C extended temperature range. /V denotes automotive qualified part. Applications Ordering Information continued at end of data sheet. Mobile Phones Portable Devices Pin Configurations and Selector Guide appear at end of data PDAs sheet. Simplified Block Diagrams SINGLE SUPPLY SINGLE SUPPLY 2.7V TO 5.5V 2.7V TO 5.5V BIAS BIAS MAX9716 MAX9717B/C/D IN- IN- BTL/SE V CC UCSP is a trademark of Maxim Integrated Products, Inc. MAX is a registered trademark of Maxim Integrated Products, Inc. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim s website at www.maxim-ic.com. EVALUATION KIT AVAILABLELow-Cost, Mono, 1.4W BTL Audio Power Amplifiers ABSOLUTE MAXIMUM RATINGS Supply Voltage (V to GND) ..................................-0.3V to +6V Operating Temperature Range ..........................-40C to +85C CC Any Other Pin to GND ...............................-0.3V to (V + 0.3V) Maximum Junction Temperature ....................................+150C CC IN , BIAS, SHDN, BTL/SE Continuous Current...................20mA Storage Temperature Range .............................-65C to +150C OUT Short-Circuit Duration to GND or V (Note 1)...Continuous Lead Temperature (soldering, 10s) .................................+300C CC Continuous Power Dissipation (T = +70C) Soldering Temperature (reflow) A 8-Pin TDFN (derate 24.4mW/C above +70C) .........1951mW Lead(Pb)-Free Packages..............................................+260C 8-Pin MAX (derate 10.3mW/C above +70C) ...........825mW Packages Containing Lead(Pb)....................................+240C 9-Bump UCSP (derate 5.2mW/C above 70C)...........412mW 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 CHARACTERISTICS5V Supply (V = 5V, V = 0V, SHDN = V , T = +25C. C = 1F, R = R = 20k (MAX9716/MAX9717A), IN+ = BIAS (MAX9716), CC GND CC A BIAS IN F BTL/SE = GND (MAX9717 ), R = connected between OUT+ and OUT-. Typical values are at T = +25C.) (Note 2) L A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V Inferred by PSRR test 2.7 5.5 V CC V = V = V (Note 3), IN- IN+ BIAS Quiescent Supply Current I 4.3 8 mA CC T = -40C to +85C A Shutdown Supply Current I SHDN = GND 0.01 1 A SHDN V 1.2 IH SHDN Threshold V V 0.4 IL 0.9 x V IH V CC BTL/SE Threshold V 0.7 x V IL V CC V /2 V /2 CC CC Common-Mode Bias Voltage V (Note 4) V /2 V BIAS CC - 6% + 6% Output Offset Voltage V V = V , V = V (Note 5) 7 15 mV OS IN- OUT+ IN+ BIAS V = 2.7V to 5.5V DC, V = 1.5V 60 80 CC BIAS V = V , Power-Supply Rejection Ratio PSRR IN+ BIAS f = 217Hz 61 dB V = 200mV , RIPPLE P-P f = 1kHz 73 R = 8 (Note 6) L R = 8 , THD+N = 1%, f = 1kHz (Note 7) 0.8 1.1 L IN R = 4 , THD+N = 1%, f = 1kHz (Note 7) 1.4 L IN Output Power P W OUT R = 16 , BTL/SE = V (single-ended L CC 0.155 mode), THD+N = 1%, f = 1kHz IN Total Harmonic Distortion Plus A = 6dB, R = 8 , f = 1kHz, V L IN THD+N 0.024 % Noise P = 0.5W (Note 8) OUT Output Noise Density e f = 10kHz 106 nV/Hz n IN Signal-to-Noise Ratio SNR THD+N = 1% 105 dB 2 MAX9716/MAX9717