EVALUATION KIT AVAILABLE MAX98304 Mono 3.2W Class D Amplifier General Description Features The MAX98304 mono 3.2W Class D amplifier provides S Low Quiescent Current: 0.95mA at 3.7V Class AB audio performance with Class D efficiency. S Spread Spectrum and Active Emissions Limiting This device offers five selectable gain settings (0dB, S Five Pin-Selectable Gains 3dB, 6dB, 9dB, and 12dB) set by a single gain-select S 19V Ultra-Low Noise input (GAIN). RMS S 90dB PSRR Active emissions-limiting, edge-rate, and overshoot con- trol circuitry greatly reduces EMI. A filterless spread- S Click-and-Pop Suppression spectrum modulation scheme eliminates the need for S Thermal and Overcurrent Protection output filtering found in traditional Class D devices. These S Low-Current Shutdown Mode features reduce application component count. S 1.0mm x 1.0mm, 9-Bump WLP (0.3mm Pitch) The IC s 0.95mA at 3.7V (1.2mA at 5V) quiescent current Space-Saving Package extends battery life in portable applications. The IC is available in a 9-bump (1.0mm x 1.0mm) WLP with 0.3mm pitch that is specified over the extended Ordering Information -40NC to +85NC temperature range. PIN- TOP PART TEMP RANGE Applications PACKAGE MARK MAX98304EWL+ -40NC to +85NC 9 WLP AIR Notebook and Netbook Computers Cellular Phones +Denotes a lead(Pb)-free/RoHS-compliant package. Tablets MP3 Players Visit www.maximintegrated.com/products/patents for Portable Audio Players product patent marking information. VoIP Phones Typical Application Circuit Bump Configuration TOP VIEW BUMP SIDE DOWN +2.5V TO +5.5V +2.5V TO +5.5V MAX98304 12 3 SHDN PVDD 0.1F 10F* + GAIN A OUT- OUT+ PVDD MAX98304 OUT+ 0.47F OUT- IN+ B PGND N.C. GAIN 0.47F IN- PGND C IN- IN+ SHDN *SYSTEM BULK CAPACITANCE WLP (1mm x 1mm x 0.64mm 0.3mm PITCH) For pricing, delivery, and ordering information, please contact Maxim Direct 19-5519 Rev 0 9/10 at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. TOP VIEW BUMP SIDE DOWN MAX98304 12 3 + A OUT- OUT+ PVDD B PGND N.C. GAIN C SHDN IN- IN+ WLP (1mm x 1mm x 0.64mm 0.3mm PITCH)MAX98304 Mono 3.2W Class D Amplifier ABSOLUTE MAXIMUM RATINGS PVDD, IN+, IN-, SHDN, GAIN to PGND ..................-0.3V to +6V Continuous Power Dissipation (T = +70NC) for Multilayer Board A 9-Bump WLP (derate 10.6mW/NC) ..............................848mW All Other Pins to PGND .........................-0.3V to (V + 0.3V) PVDD Continuous Current Into/Out of PVDD, PGND, OUT ...Q750mA Junction Temperature .....................................................+150NC Operating Temperature Range .......................... -40NC to +85NC Continuous Input Current (all other pins) ........................Q20mA Duration of Short Circuit Between Storage Temperature Range ............................ -65NC to +150NC Soldering Temperature (reflow) ......................................+260NC OUT and PVDD, PGND .......................................Continuous OUT+ and OUT- ....................................................Continuous 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 = V = 5.0V, V = 0V, A = 12dB (GAIN = PGND), R = J, R connected between OUT+ to OUT-, AC measurement PVDD SHDN PGND V L L bandwidth 20Hz to 22kHz, T = T to T , unless otherwise noted. Typical values are at T = +25NC.) (Notes 1, 2) A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range PVDD Inferred from PSRR test 2.5 5.5 V Undervoltage Lockout UVLO PVDD falling 1.5 1.8 2.2 V T = +25NC 1.2 1.8 A Quiescent Supply Current I mA DD V = 3.7V 0.95 PVDD Shutdown Supply Current I V = 0V, T = +25NC < 0.1 10 FA SHDN SHDN A Turn-On Time t 3.4 10 ms ON V PVDD Bias Voltage V V BIAS /2 A = 12dB 45 70 V A = 9dB 64 100 V T = +25C, A Input Resistance R A = 6dB 90 140 kI IN V single-ended A = 3dB 128 200 V A = 0dB 180 280 V Connect GAIN to PGND 11.5 12 12.5 Connect GAIN to PGND 8.5 9 9.5 through 100kI 5% Voltage Gain A Connect GAIN to PVDD 5.5 6 6.5 dB V Connect GAIN to PVDD 2.5 3 3.5 through 100kI 5% GAIN unconnected -0.5 0 +0.5 Output Offset Voltage V Q1 Q4.5 mV OS T = +25C (Note 3) A Into shutdown -74 Peak voltage, A-weighted, 32 Click and Pop K dBV CP samples per second, Out of shutdown -60 R = 8I (Notes 3, 4) L Common-Mode Rejection Ratio CMRR f = 1kHz, input referred 80 dB IN 2 Maxim Integrated