MAX9856 19-1288 Rev 2 12/11 Low-Power Audio CODEC with DirectDrive Headphone Amplifiers General Description Features 1.71V to 3.6V Single-Supply Operation The MAX9856 is a high-performance, low-power stereo audio CODEC designed for MP3, personal media play- Stereo 30mW DirectDrive Headphone Amplifier ers (PMPs), or other portable multimedia devices. Stereo 1V DirectDrive Line Outputs RMS Using on-board stereo DirectDrive headphone ampli- (V = 1.8V) and Stereo Line Inputs DD fiers, the CODEC can output 30mW into stereo 32 Low-Noise Stereo and Mono Differential headphones while operating from a single 1.8V power Microphone Inputs with Automatic Gain Control and Noise Quieting supply. Very low 9mW playback power consumption makes it an ideal choice for battery-powered applica- 9mW Playback Power Consumption (V = 1.8V) DD tions. The MAX9856 provides microphone input ampli- 91dB 96kHz 18-Bit Stereo DAC fiers, plus flexible input selection, signal mixing, and 85dB 48kHz 18-Bit Stereo ADC automatic gain control (AGC). Comprehensive load- Supports Any Master Clock Frequency from impedance sensing allows the MAX9856 to autodetect 10MHz to 60MHz most common audio and audio/video headset and jack ADCs and DACs Can Run at Independent Sample plug types. Rates Outputs include stereo DirectDrive line outputs and Flexible Audio Mixing and Volume Control DirectDrive headphone amplifiers. The stereo ADC can Clickless/Popless Operation convert audio signals from either internal or external Headset Detection Logic microphones that can be configured for single-ended 2 or differential signal inputs. Line inputs can be config- I C Control Interface ured as stereo, differential, or mono and fed through Ordering Information one channel of the microphone path. The analog inputs selected can be gain ranged or mixed with other input PART TEMP RANGE PIN-PACKAGE sources prior to conversion to digital. The ADC path MAX9856ETL+ -40C to +85C 40 TQFN-EP* also features programmable digital highpass filters to MAX9856GTL/V+ -40C to +105C 40 TQFN-EP* remove DC offset voltages and wind noise. +Denotes a lead-free/RoHS-compliant package. The MAX9856 supports all common sample rates from *EP = Exposed pad. 8kHz to 48kHz in both master and slave mode. The ser- /V denotes an automotive qualified part. ial digital audio interfaces support a variety of formats 2 including I S, left-justified, and PCM modes. Simplified Block Diagram The MAX9856 uses a thermally efficient, space-saving 40-pin, 6mm x 6mm x 0.8mm TQFN package. DVDD AND DVDDS2 AVDD AND CPVDD 1.71V TO 3.6V 1.71V TO 3.6V Applications MAX9856 MP3 Players Personal Media Players DAC AUXIN Handheld Gaming Consoles DIGITAL LINEIN1 MUX LEFT LINE Cellular Phones FILTERING DAC OUT LINEIN2 ANALOG AND MIXERS MIXERS SDOUT RIGHT LINE ADC SDIN OUT DIGITAL BCLK INTERFACE LRCLK D ADC DIFF Pin Configuration appears at end of data sheet. LRCLK A MIC LEFT EXT SDA MIC 2 SCL I C CLOCK RIGHT CONTROL DirectDrive is a registered trademark of Maxim Integrated IRQ EXT Products, Inc. MIC MCLK 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. EVALUATION KIT AVAILABLELow-Power Audio CODEC with DirectDrive Headphone Amplifiers ABSOLUTE MAXIMUM RATINGS (Voltages with respect to AGND.) Continuous Current Into/Out of HPR/HPL/ AVDD, DVDD, DVDDS2, CPVDD .............................-0.3V to +4V LOUTL/LOUTR...............................................................150mA PVSS, SVSS........................................Capacitor connection only CPVDD/CPGND/C1P/C1N/PVSS ......................................300mA AGND, DGND, CPGND.........................................-0.3V to +0.3V Any Other Pin......................................................................20mA HPL, HPR .................................(V - 0.3V) to (V + 0.3V) Duration of HPR/HPL/LOUTL/LOUTR Short Circuit SVSS AVDD HGNDSNS, LGNDSNS, MICGND .........................-0.3V to +0.3V to AVDD/AGND/CPVDD/CPGND ............................Continuous JACKSNS .................................(V - 0.3V) to (V + 0.3V) Continuous Power Dissipation (T = +70C) SVSS AVDD A LOUTL, LOUTR ........................(V - 0.3V) to (V + 0.3V) 40-Pin TQFN (derate 26.3mW/C above +70C, SVSS AVDD LINEIN1, LINEIN2, AUXIN...........................................-2V to +2V single-layer board)......................................................2105mW MICL, MICR, INLP, INLM, INRM..................................-2V to +2V 40-Pin TQFN (derate 37mW/C above +70C, C1N........................................(V - 0.3V) to (V + 0.3V) multilayer board) .........................................................2963mW PVSS CPGND C1P .....................................(V - 0.3V) to (V + 0.3V) Operating Temperature Ranges: CPGND CPVDD PREG, REF, MBIAS, MICBIAS................-0.3V to (V + 0.3V) E Series.............................................................-40C to +85C AVDD NREG ......................................................(V - 0.3V) to +0.3V G Series ..........................................................-40C to +105C SVSS MCLK........................................................................-0.3V to +4V Storage Temperature Range .............................-65C to +150C SDA, SCL, IRQ .........................................................-0.3V to +4V Lead Temperature (soldering, 10s) .................................+300C LRCLK A, LRCLK D, BCLK, Soldering Temperature (reflow) .......................................+260C SDIN, SDOUT ..................................-0.3V to (V + 0.3V) DVDDS2 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 = V = V = 1.8V, R = 32 , R = 10k, C1 = 4.7F, C2 = 4.7F, C = C = C = AVDD CPVDD DVDDS2 DVDD HP LINE REF MBIAS PREG C = 1F, A = +20dB, C = 1F, A = 0dB, f = 11.2896MHz, DRATE = 00, T = T to T , unless NREG VPRE MICBIAS VMIGPGA MCLK A MIN MAX otherwise noted. Typical values are at T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS AVDD = CPVDD (inferred from HP output 1.71 1.80 3.60 PSRR) Supply Voltage Range V DVDD, DVDDS2 (inferred from CODEC 1.71 1.80 3.60 performance tests) I + I 2.9 5.1 AVDD CPVDD DAC playback mode (f = 44.1kHz) analog S I + I 2.3 DVDD DVDDS2 I + I 2.9 4.3 AVDD CPVDD Line-only playback mode (DAC/ADC disabled) I + I 0.14 0.20 DVDD DVDDS2 DAC + line input I + I 3.9 5.4 AVDD CPVDD playback mode (f = 44.1kHz) S I + I 2.3 3.5 DVDD DVDDS2 Total Supply Current (Note 2) I mA VDD Full operation, f = S I + I 11.0 15.5 AVDD CPVDD 44.1kHz (DAC + ADC + LINEIN + MIC + AUXIN) I + I 3.7 4.5 DVDD DVDDS2 DAC playback, f = S I + I 6.6 9.1 AVDD CPVDD 44.1kHz mono ADC record f = 8kHz S I + I 2.8 3.5 DVDD DVDDS2 I + I 7.8 10.5 AVDD CPVDD ADC record, f = 44.1kHz S I + I 2.3 3.5 DVDD DVDDS2 I + I 2.2 10 AVDD CPVDD Shutdown Supply Current A I + I 0.6 10 DVDD DVDDS2 Shutdown to Full Operation 50 ms 2 MAX9856