MAX9860 16-Bit Mono Audio Voice Codec General Description Features The MAX9860 is a low-power, voiceband, mono audio 1.8V Single-Supply Operation codec designed to provide a complete audio solution Digital Highpass Elliptical Filters with Notch for for wireless voice headsets and other mono voice audio 217Hz (GSM) devices. Using an on-chip bridge-tied load mono head- phone amplifier, the MAX9860 can output 30mW into a Mono 30mW BTL Headphone Amplifier 32 earpiece while operating from a single 1.8V power Dual Low-Noise Microphone Inputs supply. Very low power consumption makes it an ideal choice for battery-powered applications. Automatic Microphone Gain Control and Noise The MAX9860s flexible clocking circuitry utilizes com- Gate mon system clock frequencies ranging from 10MHz to 90dB DAC DR (f = 48kHz) S 60MHz, eliminating the need for an external PLL and 81dB ADC DR (f = 48kHz) multiple crystal oscillators. Both the ADC and DAC sup- S port sample rates of 8kHz to 48kHz in either synchro- Supports Master Clock Frequencies from 10MHz nous or asynchronous operation. Both master and slave to 60MHz timing modes are supported. Supports Sample Rates from 8kHz to 48kHz Two differential microphone inputs are available with a user-programmable preamplifier and programmable Flexible Digital Audio Interface gain amplifier. Automatic gain control with selectable Clickless/Popless Operation attack/release times and signal threshold allows maxi- 2 mum dynamic range. A noise gate with selectable 2-Wire, I C-Compatible Control Interface threshold provides a means to quiet the channel when Available in 24-Pin, Thin QFN, 4mm x 4mm x no signal is present. Both the DAC and ADC digital filters 0.8mm Package provide full attenuation for out-of-band signals as well as a 5th order GSM-compliant digital highpass filter. A digi- tal side tone mixer provides loopback of the micro- Ordering Information phones/ADC signal to the DAC/headphone output. Serial DAC and ADC data is transferred over a flexible PART TEMP RANGE PIN-PACKAGE 2 digital I S-compatible interface that also supports TDM MAX9860ETG+ -40C to +85C 24 TQFN-EP* mode. Mode settings, volume control, and shutdown are +Denotes a lead-free/RoHS-compliant package. 2 programmed through a 2-wire, I C-compatible interface. *EP = Exposed pad. The MAX9860 is fully specified over the -40C to +85C extended temperature range and is available in a low- Simplified Block Diagram profile, 4mm x 4mm, 24-pin thin QFN package. Applications DVDDIO AVDD AND DVDD 1.7V TO 3.6V 1.7V TO 1.9V Audio Headsets Portable Navigation Device Mobile Phones 2 MAX9860 I C INTERFACE Smart Phones DAC VoIP Phones DIGITAL DIGITAL Audio Accessories DIGITAL AUDIO FILTERING AUDIO DIFF INPUT/OUTPUT AND ADC INTERFACE MIC MIXERS DIFF CLOCK ADC MIC CONTROL Pin Configuration and Typical Operating Circuit appear at end of data sheet. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-4349 Rev 2 2/12MAX9860 16-Bit Mono Audio Voice Codec ABSOLUTE MAXIMUM RATINGS (Voltages referenced to AGND.) Continuous Power Dissipation (T = +70C) A DVDDIO, SDA, SCL, IRQ.......................................-0.3V to +3.6V 24-Pin TQFN (derate 27.8mW/C above +70C, AVDD, DVDD............................................................-0.3V to +2V multilayer board) ......................................................2222mW AGND, DGND, MICGND.......................................-0.3V to +0.3V Operating Temperature Range ...........................-40C to +85C OUTP, OUTN, PREG, REF, MICBIAS .....-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C AVDD MICLP, MICLN, MICRP, MICRN, REG....-0.3V to (V + 0.3V) Junction Temperature......................................................+150C PREG MCLK, LRCLK, BCLK, Lead Temperature (soldering, 10s) .................................+300C SDOUT, SDIN..................................-0.3V to (V + 0.3V) Soldering Temperature (reflow) .......................................+260C DVDDIO 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. PACKAGE THERMAL CHARACTERISTICS (Note 1) TQFN Junction-to-Ambient Thermal Resistance ( )...............36C/W JA Junction-to-Case Thermal Resistance ( )......................3C/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.maximintegrated.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (V = V = V = +1.8V, R = , headphone load (R ) connected between OUTP and OUTN, C = 2.2F, C = AVDD DVDD DVDDIO L L REF MICBIAS C = C = 1F, A = +20dB, A = 0dB, f = 13MHz, f = 8kHz, T = T to T , unless otherwise noted. MCLK LRCLK PREG REG VPRE VMICPGA A MIN MAX Typical values are at T = +25C.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS AVDD (inferred from HP output PSRR) 1.7 1.8 1.9 DVDD (inferred from codec performance Supply Voltage Range 1.7 1.8 1.9 V tests) DVDDIO 1.7 1.8 3.6 AVDD 1.46 2.2 DAC playback mode (48kHz) DVDD 1.05 1.6 AVDD 4.08 5.7 Full operation 8kHz mono ADC + DAC DVDD 0.78 1.0 Total Supply Current I mA AVDD+DVDD (Note 3) AVDD 6.17 9.0 Full operation 8kHz stereo ADC + DAC DVDD 0.8 1.2 AVDD 5.38 8.0 Stereo ADC only (48kHz) DVDD 1.68 2.2 AVDD 0.56 5 Shutdown Supply Current I T = +25C A SHDN A DVDD + 1.65 5 DVDDIO Shutdown to Full Operation 10 ms DAC (Note 4) Gain Error 1 5 % + 0d B volum e setting , f = 8kHz, mea sur ed S Dynamic Range (Note 5) DR 84 90 dB at headphone output, T = +25C A DAC Full-Scale Output 1V RMS f = 1kHz, 0dBFS, HP f = 8kHz 1.2 S DAC Path Phase Delay filter disabled, digital ms f = 16kHz 0.59 S input to analog output f = 1kHz, f = 12.288MHz, MCLK Total Harmonic Distortion + Noise THD+N -87 dB f = 48kHz LRCLK Maxim Integrated 2