19-5519; Rev 0; 9/10 TION KIT EVALUA BLE IL AVA A Mono 3.2W Class D Amplifier Features The MAX98304 mono 3.2W Class D amplifier provides Class AB audio performance with Class D efficiency. This device offers five selectable gain settings (0dB, 3dB, 6dB, 9dB, and 12dB) set by a single gain-select input (GAIN). S Low Quiescent Current: 0.95mA at 3.7V Active emissions-limiting, edge-rate, and overshoot control circuitry greatly reduces EMI. A filterless spreadspectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices. These features reduce application component count. S 90dB PSRR The IC's 0.95mA at 3.7V (1.2mA at 5V) quiescent current extends battery life in portable applications. S 1.0mm x 1.0mm, 9-Bump WLP (0.3mm Pitch) Space-Saving Package S Spread Spectrum and Active Emissions Limiting S Five Pin-Selectable Gains S 19VRMS Ultra-Low Noise S Click-and-Pop Suppression S Thermal and Overcurrent Protection S Low-Current Shutdown Mode The IC is available in a 9-bump (1.0mm x 1.0mm) WLP with 0.3mm pitch that is specified over the extended -40NC to +85NC temperature range. Ordering Information Applications Notebook and Netbook Computers PART TEMP RANGE PINPACKAGE Tablets MAX98304EWL+ -40NC to +85NC 9 WLP MP3 Players +Denotes a lead(Pb)-free/RoHS-compliant package. Cellular Phones TOP MARK AIR Portable Audio Players VoIP Phones Typical Application Circuit Bump Configuration TOP VIEW BUMP SIDE DOWN +2.5V TO +5.5V +2.5V TO +5.5V MAX98304 PVDD SHDN GAIN 0.1F 1 2 3 A OUT- OUT+ PVDD B PGND N.C. GAIN C SHDN IN- IN+ 10F* + MAX98304 OUT+ 0.47F IN+ OUT- 0.47F IN- PGND *SYSTEM BULK CAPACITANCE WLP (1mm x 1mm x 0.64mm 0.3mm PITCH) ________________________________________________________________ Maxim Integrated Products 1 TOP VIEW For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, BUMP SIDE DOWN MAX98304 or visit Maxim's website at www.maxim-ic.com. 1 2 3 MAX98304 General Description MAX98304 Mono 3.2W Class D Amplifier ABSOLUTE MAXIMUM RATINGS PVDD, IN+, IN-, SHDN, GAIN to PGND...................-0.3V to +6V All Other Pins to PGND..........................-0.3V to (VPVDD + 0.3V) Continuous Current Into/Out of PVDD, PGND, OUT_.... Q750mA Continuous Input Current (all other pins)......................... Q20mA Duration of Short Circuit Between OUT_ and PVDD, PGND........................................Continuous OUT+ and OUT-.....................................................Continuous Continuous Power Dissipation (TA = +70NC) for Multilayer Board 9-Bump WLP (derate 10.6mW/NC)...............................848mW Junction Temperature......................................................+150NC Operating Temperature Range........................... -40NC to +85NC Storage Temperature Range............................. -65NC to +150NC Soldering Temperature (reflow).......................................+260NC 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 (VPVDD = VSHDN = 5.0V, VPGND = 0V, AV = 12dB (GAIN = PGND), RL = J, RL connected between OUT+ to OUT-, AC measurement bandwidth 20Hz to 22kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25NC.) (Notes 1, 2) PARAMETER SYMBOL CONDITIONS MIN MAX UNITS 5.5 V 1.8 2.2 V TA = +25NC 1.2 1.8 VPVDD = 3.7V 0.95 VSHDN = 0V, TA = +25NC Supply Voltage Range PVDD Inferred from PSRR test 2.5 Undervoltage Lockout UVLO PVDD falling 1.5 Quiescent Supply Current IDD Shutdown Supply Current ISHDN TYP mA < 0.1 10 FA Turn-On Time tON 3.4 10 ms Bias Voltage VBIAS VPVDD /2 Input Resistance RIN TA = +25C, single-ended AV = 12dB 45 70 AV = 9dB 64 100 AV = 6dB 90 140 AV = 3dB 128 200 AV = 0dB Voltage Gain Output Offset Voltage AV VOS Common-Mode Rejection Ratio KCP CMRR kI 180 280 Connect GAIN to PGND 11.5 12 12.5 Connect GAIN to PGND through 100kI 5% 8.5 9 9.5 Connect GAIN to PVDD 5.5 6 6.5 Connect GAIN to PVDD through 100kI 5% 2.5 3 3.5 GAIN unconnected -0.5 0 +0.5 Q1 Q4.5 TA = +25C (Note 3) Into shutdown Click and Pop V Peak voltage, A-weighted, 32 samples per second, Out of shutdown RL = 8I (Notes 3, 4) -74 fIN = 1kHz, input referred 80 -60 2 _______________________________________________________________________________________ dB mV dBV dB Mono 3.2W Class D Amplifier (VPVDD = VSHDN = 5.0V, VPGND = 0V, AV = 12dB (GAIN = PGND), RL = J, RL connected between OUT+ to OUT-, AC measurement bandwidth 20Hz to 22kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25NC.) (Notes 1, 2) PARAMETER SYMBOL CONDITIONS VPVDD = 2.5V to 5.5V, TA = +25NC Power-Supply Rejection Ratio (Note 3) Output Power PSRR POUT Total Harmonic Distortion Plus Noise Oscillator Frequency THD+N MIN TYP 72 90 f = 217Hz 80 VRIPPLE = 200mVP-P f = 1kHz 84 f = 20kHz 84 THD+N = 10%, f = 1kHz, RL = 4I + 33FH VPVDD = 5.0V 3.2 VPVDD = 4.2V 2.2 VPVDD = 3.7V 1.7 THD+N = 1%, f = 1kHz, RL = 4I + 33FH VPVDD = 5.0V 2.6 VPVDD = 4.2V 1.8 VPVDD = 3.7V 1.4 THD+N = 10%, f = 1kHz, RL = 8I + 68FH VPVDD = 5.0V 1.8 THD+N = 1%, f = 1kHz, RL = 8I + 68FH fIN = 1kHz VPVDD = 4.2V 1.2 VPVDD = 3.7V 0.96 VPVDD = 5.0V 1.4 VPVDD = 4.2V 1 VPVDD = 3.7V 0.8 RL = 4I POUT = 1W 0.03 RL = 8I POUT = 0.7W 0.03 Noise dB W 0.1 fOSC 300 kHz kHz E 12.5 93 VN POUT = 1.75W, RL = 8I A-weighted (Note 3) AV = 12dB 31 AV = 9dB 26 AV = 6dB 23 AV = 3dB 21 AV = 0dB Output Current Limit UNITS % Spread-Spectrum Bandwidth Efficiency MAX % FVRMS 19 ILIM 2.8 A Thermal Shutdown Level 155 NC Thermal Shutdown Hysteresis 15 NC DIGITAL INPUT (SHDN) Input-Voltage High VINH VPVDD = 2.5V to 5.5V Input-Voltage Low VINL VPVDD = 2.5V to 5.5V 0.4 V TA = +25NC Q1 FA Input Leakage Current 1.4 V Note 1: This device is 100% production tested at +25NC. All temperature limits are guaranteed by design. Note 2: Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For RL = 4I, L = 33FH. For RL = 8I, L = 68FH. Note 3: Amplifier inputs AC-coupled to ground. Note 4: Mode transitions controlled by SHDN. _______________________________________________________________________________________ 3 MAX98304 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (VPVDD = VSHDN = 5.0V, VPGND = 0V, AV = 6dB, RL = J, RL connected between OUT+ to OUT-, AC measurement bandwidth 20Hz to 22kHz, TA = +25NC, unless otherwise noted.) VPVDD = 4.2V ZLOAD = 4I + 33H POUT = 1W THD+N (%) 0.1 POUT = 1.5W 0.1 0.01 10 VPVDD = 3.7V ZLOAD = 4I + 33H 1 THD+N (%) 1 POUT = 2W TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY MAX98304 toc02 VPVDD = 5V ZLOAD = 4I + 33H 1 THD+N (%) 10 MAX98304 toc01 10 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY MAX98304 toc03 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 0.1 0.01 POUT = 0.8W POUT = 0.2W 0.01 POUT = 0.5W 0.001 10 100 1k 10k 100k 0.001 10 100 1k 10k 100k 10 100 1k 10k 100k FREQUENCY (Hz) TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY VPVDD = 4.2V ZLOAD = 8I + 68H POUT = 1.2W 0.1 POUT = 0.6W POUT = 0.2W 0.01 VPVDD = 3.7V ZLOAD = 8I + 68H 1 POUT = 0.4W POUT = 0.2W THD+N (%) THD+N (%) 1 0.1 10 MAX98304 toc05 10 MAX98304 toc04 VPVDD = 5V ZLOAD = 8I + 68H MAX98304 toc06 FREQUENCY (Hz) 1 THD+N (%) 0.001 FREQUENCY (Hz) 10 0.1 0.01 0.01 POUT = 0.3W 1k 10k 100k 0.001 10 100 FREQUENCY (Hz) 10 100 f = 1000Hz 0.01 VPVDD = 4.2V ZLOAD = 4I + 33H f = 1000Hz 0.1 1.0 1.5 2.0 2.5 OUTPUT POWER (W) 100 3.0 3.5 4.0 10k VPVDD = 3.7V ZLOAD = 4I + 33H 10 100k f = 6000Hz 1 f = 1000Hz 0.1 f = 100Hz 0.001 1k 0.01 0.01 0.5 100 TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER f = 6000Hz 1 f = 100Hz 0 10 FREQUENCY (Hz) 10 THD+N (%) f = 6000Hz 0.1 100k TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER MAX98304 toc07 VPVDD = 5V ZLOAD = 4I + 33H 1 10k FREQUENCY (Hz) TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER 100 1k THD+N (%) 100 MAX98304 toc08 10 0.001 MAX98304 toc09 0.001 THD+N (%) MAX98304 Mono 3.2W Class D Amplifier f = 100Hz 0.001 0.001 0 0.5 1.0 1.5 OUTPUT POWER (W) 2.0 2.5 0 0.5 1.0 OUTPUT POWER (W) 4 _______________________________________________________________________________________ 1.5 2.0 Mono 3.2W Class D Amplifier TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER f = 1000Hz f = 6000Hz f = 1000Hz 0.1 f = 100Hz 0.5 1.0 1.5 0 2.0 0.3 3.0 THD+N = 10% 2.0 1.5 1.0 1.5 0 THD+N = 10% MAX98304 toc12 3.5 3.0 1.2 THD+N = 10% 2.5 2.0 1.5 THD+N = 1% 1.0 THD+N = 1% 100 0 10 1 1000 100 1000 2.5 3.0 RLOAD (I) RLOAD (I) 1.0 0 GAIN = 100kI TO PGND GAIN = PVDD GAIN = 100kI TO PVDD -10 4.5 100 5.0 GAIN = UNCONNECTED -20 VPVDD = 5.0V 90 80 EFFICIENCY (%) THD+N = 10% 4.0 5.5 EFFICIENCY vs. OUTPUT POWER 10 AMPLITUDE (dB) f = 1kHz ZLOAD = 8I + 68H GAIN = PGND MAX98304 toc17 MAX98304 toc16 20 3.5 SUPPLY VOLTAGE (V) GAIN vs. FREQUENCY OUTPUT POWER vs. SUPPLY VOLTAGE 2.5 ZLOAD = 8I + 68H 70 ZLOAD = 4I + 33H 60 50 40 30 THD+N = 1% 0.5 1.0 f = 1kHz ZLOAD = 4I + 33H 4.0 0 10 1.5 0.8 0.5 0 2.0 0.6 OUTPUT POWER vs. SUPPLY VOLTAGE 1.5 1.0 0.4 4.5 THD+N = 1% 1 0.2 OUTPUT POWER (W) VPVDD = 3.7V 0.5 0.5 1.2 2.0 OUTPUT POWER (W) 3.5 OUTPUT POWER (W) 2.5 MAX98304 toc13 VPVDD = 5.0V 2.5 0.9 OUTPUT POWER vs. LOAD RESISTANCE OUTPUT POWER vs. LOAD RESISTANCE 4.0 0.6 0.001 OUTPUT POWER (W) OUTPUT POWER (W) 4.5 f = 1000Hz 0.1 f = 100Hz f = 100Hz 0.001 OUTPUT POWER (W) 0 f = 6000Hz 1 0.01 MAX98304 toc14 0.001 OUTPUT POWER (W) 10 0.01 0.01 VPVDD = 3.7V ZLOAD = 8I + 68H MAX98304 toc18 0.1 1 100 MAX98304 toc15 f = 6000Hz 10 THD+N (%) THD+N (%) 10 VPVDD = 4.2V ZLOAD = 8I + 68H THD+N (%) VPVDD = 5V ZLOAD = 8I + 68H 1 100 MAX98304 toc10 100 TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER MAX98304 toc11 TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER 20 -30 10 -40 0 2.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) 5.0 5.5 0 10 100 1k FREQUENCY (Hz) 10k 100k 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 OUTPUT POWER (W) _______________________________________________________________________________________ 5 MAX98304 Typical Operating Characteristics (continued) (VPVDD = VSHDN = 5.0V, VPGND = 0V, AV = 6dB, RL = J, RL connected between OUT+ to OUT-, AC measurement bandwidth 20Hz to 22kHz, TA = +25NC, unless otherwise noted.) Typical Operating Characteristics (continued) (VPVDD = VSHDN = 5.0V, VPGND = 0V, AV = 6dB, RL = J, RL connected between OUT+ to OUT-, AC measurement bandwidth 20Hz to 22kHz, TA = +25NC, unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE 50 40 30 0 -20 1.4 -30 1.2 -40 1.0 0.8 -50 -60 0.6 -70 20 0.4 -80 10 0.2 -90 0 0 -100 0 0.5 1.0 1.5 2.0 3.0 2.5 OUTPUT POWER (W) 3.5 4.0 4.5 5.0 5.5 f = 1kHz VRIPPLE = 200mVP-P 70 60 -50 -60 30 20 -90 10 4.5 5.0 AV = 3dB AV = 0dB 0 5.5 10 SUPPLY VOLTAGE (V) 100 1k 10k 100k FREQUENCY (Hz) SHUTDOWN RESPONSE STARTUP RESPONSE MAX98304 toc25 MAX98304 toc24 1ms/div 10k 40 -80 -100 AV = 6dB AV = 12dB 50 -70 4.0 AV = 9dB 80 -40 3.5 ZLOAD = 8I + 68H 90 -30 3.0 1k FREQUENCY (Hz) 100 CMRR (dB) PSRR (dB) -20 2.5 100 COMMON-MODE REJECTION RATIO vs. FREQUENCY MAX98304 toc22 0 10 SUPPLY VOLTAGE (V) POWER-SUPPLY REJECTION RATIO vs. SUPPLY VOLTAGE -10 VRIPPLE = 200mVP-P ZLOAD = 8I + 68H -10 MAX98304 toc23 ZLOAD = 4I + 33H 60 1.6 SUPPLY CURRENT (mA) ZLOAD = 8I + 68H 70 1.8 PSRR (dB) 80 2.0 MAX98304 toc20 VPVDD = 3.7V 90 MAX98304 toc19 100 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY MAX98304 toc21 EFFICIENCY vs. OUTPUT POWER EFFICIENCY (%) MAX98304 Mono 3.2W Class D Amplifier VSHDN 2V/div VSHDN 2V/div ISPEAKER 100mA/div ISPEAKER 100mA/div 1ms/div 6 _______________________________________________________________________________________ 100k Mono 3.2W Class D Amplifier (VPVDD = VSHDN = 5.0V, VPGND = 0V, AV = 6dB, RL = J, RL connected between OUT+ to OUT-, AC measurement bandwidth 20Hz to 22kHz, TA = +25NC, unless otherwise noted.) MAX98304 2 OUT- OUT+ B PGND N.C. C SHDN IN- -40 -80 1 10 f = 1kHz VOUT = -60dBV PVDD -20 -40 GAIN -60 -80 IN+ -100 -120 WLP (1mm x 1mm x 0.64mm 0.3mm PITCH) -140 -100 0.1 IN-BAND vs. FREQUENCY 0 -20 -60 3 OUTPUT MAGNITUDE (dBV) MAX98304 toc26 RBW = 100Hz A 0 OUTPUT MAGNITUDE (dBV) 1 + MAX98304 toc27 WIDEBAND vs. FREQUENCY 20 100 10 FREQUENCY (MHz) 100 1k 10k 100k FREQUENCY (Hz) Bump Configuration TOP VIEW BUMP SIDE DOWN MAX98304 1 2 3 A OUT- OUT+ PVDD B PGND N.C. GAIN C SHDN IN- IN+ + WLP (1mm x 1mm x 0.64mm 0.3mm PITCH) Bump Description BUMP NAME FUNCTION A1 OUT- Negative Speaker Output A2 OUT+ Positive Speaker Output A3 PVDD Power Supply. Bypass PVDD to PGND with 0.1FF || 10FF. B1 PGND Ground B2 N.C. No Connection. Can be left unconnected, or connected to PGND. B3 GAIN Gain Select. See Table 1 for GAIN settings. C1 C2 SHDN IN- Active-Low Shutdown Input. Drive SHDN low to place the device in shutdown. Inverting Audio Input C3 IN+ Noninverting Audio Input _______________________________________________________________________________________ 7 MAX98304 TOP VIEW Typical Operating Characteristics (continued) BUMP SIDE DOWN Detailed Description Maxim's patented spread-spectrum modulation mode flattens wideband spectral components, while proprietary techniques ensure that the cycle-to-cycle variation of the switching period does not degrade audio reproduction or efficiency. The IC's spread-spectrum modulator randomly varies the switching frequency by Q12.5kHz around the center frequency (300kHz). Above 10MHz, the wideband spectrum looks like noise for EMI purposes (Figure 1). The MAX98304 features low quiescent current, a lowpower shutdown mode, comprehensive click-and-pop suppression, and excellent RF immunity. The device offers Class AB audio performance with Class D efficiency in a minimal board-space solution. The Class D amplifier features spread-spectrum modulation, edge-rate, and overshoot control circuitry that offers significant improvements to switch-mode amplifier radiated emissions. Speaker Current Limit If the output current of the speaker amplifier exceeds the current limit (2.8A typ), the IC disables the outputs for approximately 100Fs. At the end of 100Fs, the outputs are reenabled. If the fault condition still exists, the IC continues to disable and reenable the outputs until the fault condition is removed. The amplifier features click-and-pop suppression that reduces audible transients on startup and shutdown. The amplifier includes thermal overload and short-circuit protection. Class D Speaker Amplifier Selectable Gain The filterless Class D amplifier offers much higher efficiency than Class AB amplifiers. The high efficiency of a Class D amplifier is due to the switching operation of the output stage transistors. Any power loss associated with the Class D output stage is mostly due to the I2R loss of the MOSFET on-resistance and quiescent current overhead. The IC offers five programmable gain selections through a single gain input (GAIN). Table 1. Gain Control Configuration GAIN PIN Ultra-Low EMI Filterless Output Stage Traditional Class D amplifiers require the use of external LC filters, or shielding, to meet EN55022B electromagnetic-interference (EMI) regulation standards. Maxim's patented active emissions-limiting edge-rate control circuitry and spread-spectrum modulation reduces EMI emissions, while maintaining up to 93% efficiency. MAXIMUM GAIN (dB) Connect to PGND 12 Connect to PGND through 100kW 5% resistor 9 Connect to PVDD 6 Connect to PVDD through 100kW 5% resistor 3 Unconnected 0 90 EMISSIONS LEVEL (dBV/m) MAX98304 Mono 3.2W Class D Amplifier 70 50 EN55022B LIMIT 30 HORIZONTAL 10 -10 VERTICAL 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) Figure 1. EMI with 60cm of Speaker Cable and No Output Filtering 8 _______________________________________________________________________________________ Mono 3.2W Class D Amplifier Click-and-Pop Suppression The IC speaker amplifier features Maxim's comprehensive click-and-pop suppression. During startup, the click-and-pop suppression circuitry reduces any audible transient sources internal to the device. When entering shutdown, the differential speaker outputs ramp down to PGND quickly and simultaneously. Applications Information Filterless Class D Operation Traditional Class D amplifiers require an output filter. The filter adds cost, size, and decreases efficiency and THD+N performance. The IC's filterless modulation scheme does not require an output filter. Because the switching frequency of the IC is well beyond the bandwidth of most speakers, voice coil movement due to the switching frequency is very small. Use a speaker with a series inductance > 10FH. Typical 8I speakers exhibit series inductances in the 20FH to 100FH range. Component Selection Power-Supply Input (PVDD) PVDD powers the speaker amplifier. PVDD ranges from 2.5V to 5.5V. Bypass PVDD with a 0.1FF and 10FF capacitor to PGND. Apply additional bulk capacitance at the device if long input traces between PVDD and the power source are used. Layout and Grounding Proper layout and grounding are essential for optimum performance. Good grounding improves audio performance and prevents switching noise from coupling into the audio signal. Use wide, low-resistance output traces. As the load impedance decreases, the current drawn from the device increases. At higher current, the resistance of the output traces decreases the power delivered to the load. For example, if 2W is delivered from the device output to a 4I load through 100mI of total speaker trace, 1.904W is being delivered to the speaker. If power is delivered through 10mI of total speaker trace, 1.99W is being delivered to the speaker. Wide output, supply, and ground traces also improve the power dissipation of the device. The IC is inherently designed for excellent RF immunity. For best performance, add ground fills around all signal traces on top or bottom PCB planes. WLP Applications Information For the latest application details on WLP construction, dimensions, tape carrier information, PCB techniques, bump-pad layout, and recommended reflow temperature profile, as well as the latest information on reliability testing results, refer to Application Note 1891: Waferlevel packaging (WLP) and its applications. Figure 2 shows the dimensions of the WLP balls used on the IC. 0.18mm Input Filtering The input-coupling capacitor (CIN), in conjunction with the amplifier's internal input resistance (RIN), forms a highpass filter that removes the DC bias from the incoming signal. These capacitors allow the amplifier to bias the signal to an optimum DC level. Assuming zero source impedance CIN is: CIN = 2 x RIN [FF] f-3dB 0.18mm where f-3dB is the -3dB corner frequency and RIN is the input resistance shown in the Electrical Characteristics table. Use capacitors with adequately low voltage-coefficient for best low-frequency THD performance. Figure 2. MAX98304 WLP Ball Dimensions _______________________________________________________________________________________ 9 MAX98304 Shutdown The IC features a low-power shutdown mode, drawing less than 0.1FA (typ) of supply current. Drive SHDN low to put the IC into shutdown. Mono 3.2W Class D Amplifier MAX98304 Functional Diagram 2.5V TO 5.5V 0.1F 10F* PVDD A3 SHDN C1 UVLO/POWER MANAGEMENT CLICK-AND-POP SUPPRESSION PVDD GAIN B3 0.47F 0.47F LOW-EMI DRIVER A1 OUT- A2 OUT+ IN+ C3 PGND CLASS D MODULATOR PVDD IN- C2 LOW-EMI DRIVER PGND MAX98304 B1 PGND *SYSTEM BULK CAPACITANCE Chip Information PROCESS: CMOS 10 Mono 3.2W Class D Amplifier For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 9 WLP W91D1+1 21-0486 -- ______________________________________________________________________________________ 11 MAX98304 Package Information Mono 3.2W Class D Amplifier MAX98304 Revision History REVISION NUMBER REVISION DATE 0 9/10 DESCRIPTION Initial release PAGES CHANGED -- Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 (c) Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.