EVALUATION KIT AVAILABLE MAX98091 Ultra-Low Power Stereo Audio Codec General Description Features and Benefits 102dB DR Stereo DAC to HP The MAX98091 is a fully integrated audio codec whose high-performance, ultra-low power consumption and 4.1mW Stereo Playback Power Consumption small footprint make it ideal for portable applications. 99dB DR Stereo ADC The device features a highly flexible input scheme with 4.5mW Stereo Record Power Consumption six input pins that can be configured as analog or digital 3 Stereo Single-Ended/Differential Analog microphone inputs, differential or single-ended line inputs, Microphone/Line Inputs or as full-scale direct differential inputs. Analog inputs can Two PDM Digital Microphone Inputs be routed to the record path ADC or directly to any analog Master Clock Frequencies from 256 x f to 60MHz output mixer. S 2 I S/LJ/RJ/TDM Digital Audio Interface The device accepts master clock frequencies of either 256 x f or from 10MHz to 60MHz. The digital audio inter- FlexSound Technology Signal Processing S Record Path Biquad Filter face supports master or slave mode operation, sample Playback Path 7-Band Parametric EQ rates from 8kHz to 96kHz, and standard PCM formats Playback Path Automatic Level Control 2 such as I S, left/right-justified, and TDM. Digital Filtering and Gain/Level Control The record/playback paths feature FlexSound technology Stereo Low EMI Class D Speaker Amplifiers DSP. This includes digital gain and filtering, a biquad filter 3.2W/Channel (R = 4, V = 5V) L SPKVDD (record), dynamic range control (playback), and a seven 1.8W/Channel (R = 8, V = 5V) L SPKVDD band parametric equalizer (playback) that can improve loud- Stereo DirectDrive Class H Headphone Amplifier speaker performance by optimizing the frequency response. Jack Detection and Identification The stereo Class D speaker amplifier provides efficient Differential Receiver Amplifier/Stereo Line Output amplification, features low radiated emissions, supports Extensive Click-and-Pop Reduction Circuitry filterless operation, and can drive both 4 and 8 loads. RF Immune Analog Inputs and Outputs The DirectDrive stereo Class H headphone ampli- fier provides a ground-referenced output eliminating the Programmable Microphone Bias need for large DC-blocking capacitors. The device also 2 I C Control Interface includes a differential receiver (earpiece) amplifier that 56-Bump 0.4mm WLP and 48-Pin can be reconfigured as a stereo single-ended line output. 6mmx6mmx0.75mm TQFN Packages Simplified Block Diagram 2 2 BATTERY 1.8V 1.2V I S/TDM I C STEREO DIGITAL STEREO LINE OUTPUT OR DIGITAL MICROPHONE 1 CLASS AB AMPLIFIER 1 POWER DIGITAL AUDIO CONTROL MICROPHONE (SINGLE ENDED) LINE OUTPUT 2 MANAGEMENT INTERFACE REGISTERS STEREO DIGITAL OR OR OR MICROPHONE 2 SPEAKER LEFT ANALOG CLASS D AMPLIFIER LINE INPUT MICROPHONE (DIFFERENTIAL) RECEIVER/ MICROPHONE 1 FLEXSOUND DSP EARPIECE PREAMP/PGA DIGITAL BIQUAD FILTER 3 (DIFFERENTIAL) SPEAKER LEFT OR (RECORD) CLASS D AMPLIFIER 4 7-BAND PARAMETRIC ANALOG MICROPHONE 2 (DIFFERENTIAL) LINE INPUT EQUALIZER (PLAYBACK) MICROPHONE PREAMP/PGA STEREO STEREO SPEAKER DYNAMIC RANGE CONTROL (DIFFERENTIAL) ADC DAC LEFT/RIGHT (PLAYBACK) SPEAKER RIGHT DIGITAL FILTERING CLASS D AMPLIFIER OR LINE INPUT A PGA DIGITAL GAIN/LEVEL DIGITAL 5 (DIFFERENTIAL) (DIFFERENTIAL OR CONTROL MICROPHONE 6 SINGLE-ENDED) OR STEREO HEADPHONE LINE INPUT B PGA CLASS H AMPLIFIER ANALOG (DIFFERENTIAL OR LINE INPUT (SINGLE-ENDED) MICROPHONE SINGLE-ENDED) HEADPHONES OR MAX98091 OR JACK DETECTION CHARGE PUMP HEADSET 3-POLE (TRS) 4-POLE (TRRS) For related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX98091.related. Ordering Information appears at end of data sheet. 19-6700 Rev 2 11/14MAX98091 Ultra-Low Power Stereo Audio Codec TABLE OF CONTENTS General Description ............................................................................ 1 Features and Benefits .......................................................................... 1 Simplified Block Diagram ........................................................................ 1 Functional Diagram ........................................................................... 10 Absolute Maximum Ratings ......................................................................11 Package Thermal Characteristics .................................................................11 Electrical Characteristics ........................................................................11 Digital Filter Specifications...................................................................... 21 Digital Input/Output Characteristics ............................................................... 25 Input Clock Characteristics ..................................................................... 27 Digital Audio Interface Timing Characteristics....................................................... 28 2 I C Timing Characteristics ...................................................................... 30 Digital Microphone Timing Characteristics ......................................................... 31 Quiescent Power Consumption .................................................................. 32 Typical Operating Characteristics ................................................................ 37 Bump/Pin Configurations ....................................................................... 68 Bump/Pin Description.......................................................................... 70 Detailed Description........................................................................... 72 2 Device I C Register Map ....................................................................... 72 Software Reset............................................................................... 81 Power and Performance Management ............................................................ 81 Device Performance Configuration 81 Device Enable Configuration 83 Audio Input Configuration ...................................................................... 85 Analog Microphone Inputs 86 Analog Microphone Preamplifier and PGA . 87 Analog Microphone Bias Voltage . 88 Digital Microphone Inputs . 88 Digital Microphone Clock Configuration . 88 Secondary Record Path Sample Rate Configuration . 90 Digital Microphone Frequency Compensation . 92 Analog Line Inputs 95 Analog Line Input Mixers . 95 Analog Line Input PGAs . 96 Analog Input PGA to Analog Output Mixer 98 Analog Full-Scale Direct to ADC Mixer Inputs . 98 Maxim Integrated 2 www.maximintegrated.com