19-5912 Rev 0 6/11 E V A L U A T I O N K I T A V A I L A B L E MAX98309/MAX98310 Mono 1.4W Class AB Audio Amplifiers General Description Benefits and Features S Enhances System Performance The MAX98309/MAX98310 mono 1.4W class AB audio Differential Input Improves Noise Immunity amplifiers offer low quiescent current while maintaining Industry-Leading Click-and-Pop Suppression excellent SNR and low 0.008% THD+N. These ICs fea- High 90dB PSRR (f = 217Hz) ture excellent 90dB PSRR and state of the art click-and- IN pop suppression. S Smaller Solution Size 1mm x 1mm WLP Footprint The ICs are offered with an internally fixed 0dB, 3dB, 6dB, and 9dB gain (MAX98310) or an externally set gain S Extends Battery Life (MAX98309) through external resistors. Low Quiescent Current The MAX98309 feature a 10ms or 100ms pin-selectable S Delivers Robust System Design turn-on time, while the MAX98310 has a preset 5ms turn- Thermal Overload Protection on time. Short-Circuit Protection The MAX98309/MAX98310 are available in a (1.0mm x S 1.2mA Supply Current (V = 3.7V) DD 1.0mm) 9-bump, 0.3mm pitch WLP, and are specified over S 750mW into 8I (V = 3.7V) DD the extended -40NC to +85NC temperature range. S 2.5V to 5.5V Supply Operation Applications S Pin-Selectable, Internally-Fixed Gain (MAX98310) S 1.8V Logic-Compatible SHDN Input Cell Phones/Smartphones Digital Cameras Ordering Information appears at end of data sheet. GPS Portable Media Players For related parts and recommended products to use with this part, refer to www.maxim-ic.com/MAX98309.related. e-Readers Tablets Simplified Block Diagram 2.5V TO 5.5V R F 2.5V TO 5.5V 0.1F 1F 0.1F 1F BIAS V GAIN DD BIAS MAX98310 BIAS V TON R DD F BIAS MAX98309 V DD C C IN IN R R IN IN OUT+ OUT+ IN- IN- BIAS BIAS C C IN IN R R IN IN IN+ OUT- IN+ OUT- GND SHDN GND R F SHDN GND R F Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX98309/MAX98310 Mono 1.4W Class AB Audio Amplifiers ABSOLUTE MAXIMUM RATINGS V to GND ............................................................... -0.3V to 6V OUT+ to OUT- Short Circuit Duration .......................Continuous DD SHDN to GND ........................................................... -0.3V to 6V Continuous Power Dissipation (T = +70NC) A All Other Pins to GND ...............................-0.3V to (V + 0.3V) WLP (derate 11.9mW/NC above +70NC)......................848mW DD Continuous Current Junction Temperature .....................................................+150NC Operating Temperature Range .......................... -40NC to +85NC V , GND, OUT .......................................................Q750mA DD IN , SHDN, BIAS, GAIN, TON .........................................Q20mA Storage Temperature Range ............................ -65NC to +150NC Soldering Temperature (reflow).......................................+260NC OUT Short Circuit to GND or V Duration ............Continuous DD Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional opera- tion 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. PACKAGE THERMAL CHARACTERISTICS (Note 1) WLP Junction-to-Ambient Thermal Resistance (B )......... 94C/W JA Junction-to-Case Thermal Resistance (B ) ...............41C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four- layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (V = 3.7V, V = 0V, SHDN = V , GAIN = V (0dB), C = 0.1F, C = 0.47F, no load: R = R = 10kI (MAX98309), DD GND DD DD BIAS IN IN F T = T to T Typical values are at T = +25C, unless otherwise noted.) (Note 2) A MIN MAX. A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V Guaranteed by PSRR test 2.5 5.5 V DD Undervoltage Lockout UVLO V falling 1.8 2.3 V DD V = 3.7V 1.2 DD Quiescent Supply Current I SHDN = V mA VDD DD V = 5V 1.9 1.8 DD Shutdown Supply Current I V = 0V, T = +25NC 2 3 FA VDD SD SHDN A TON = GND 10 22.8 MAX98309 shutdown to full operation TON = V 100 DD Turn-On Time t ms ON MAX98310 shutdown to full operation 5.7 11.5 GAIN = V -0.25 0 +0.25 DD GAIN = GND 2.75 3 3.25 Gain A MAX98310 dB V GAIN = unconnected 5.75 6 6.25 GAIN = BIAS 8.75 9 9.25 0.80 x GAIN = V DD V DD 0.05 x GAIN = GND V DD Gain Selection Threshold MAX98310 V 0.16 x 0.24 x GAIN = unconnected V V DD DD 0.35 x 0.69 x GAIN = BIAS V V DD DD Maxim Integrated Products 2