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MAX98091：Ultra-Low Power Stereo Audio Codec

High-Performance Audio Codec with Ultra-Low Power Consumption and Small Footprint for Portable Applications

The MAX98091 is a fully integrated audio codec whose high-performance, ultra-low power consumption and small footprint make it ideal for portable applications. The device features a highly flexible input scheme with six input pins that can be configured as analog or digital microphone inputs, differential or single-ended line inputs, or as full-scale direct differential inputs. Analog inputs can be routed to the record path ADC or directly to any analog output mixer. The device accepts master clock frequencies of either 256 x fS or from 10MHz to 60MHz. The digital audio interface supports master or slave mode operation, sample rates from 8kHz to 96kHz, and standard PCM formats such as I²S, left/right-justified, and TDM. The record/playback paths feature FlexSound® technology DSP. This includes digital gain and filtering, a biquad filter (record), dynamic range control (playback), and a seven band parametric equalizer (playback) that can improve loudspeaker performance by optimizing the frequency response. The stereo Class D speaker amplifier provides efficient amplification, features low radiated emissions, supports filterless operation, and can drive both 4Ω and 8Ω loads. The DirectDrive® stereo Class H headphone amplifier provides a ground-referenced output eliminating the need for large DC-blocking capacitors. The device also includes a differential receiver (earpiece) amplifier that can be reconfigured as a stereo single-ended line output.

Key Features 102dB DR Stereo DAC to HP 4.1mW Stereo Playback Power Consumption 99dB DR Stereo ADC 4.5mW Stereo Record Power Consumption 3 Stereo Single-Ended/Differential Analog Microphone/Line Inputs Two PDM Digital Microphone Inputs Master Clock Frequencies from 256 x fS to 60MHz I2S/LJ/RJ/TDM Digital Audio Interface FlexSound Technology Signal Processing Record Path Biquad Filter Playback Path 7-Band Parametric EQ Playback Path Automatic Level Control Digital Filtering and Gain/Level Control Stereo Low EMI Class D Speaker Amplifiers 3.2W/Channel (RL = 4Ω, VSPKVDD = 5V) 1.8W/Channel (RL = 8Ω, VSPKVDD = 5V) Stereo DirectDrive Class H Headphone Amplifier Jack Detection and Identification Differential Receiver Amplifier/Stereo Line Output Extensive Click-and-Pop Reduction Circuitry RF Immune Analog Inputs and Outputs Programmable Microphone Bias I2C Control Interface 56-Bump 0.4mm WLP and 48-Pin 6mm x 6mm x 0.75mm TQFN Packages

MAX98091: Simplified Block Diagram Applications/Uses Smartphones Tablets

DataSheet

Parametrics

Design kits & evaluation modules

• MAX98091EVKIT

Quality and Environmental Data

• MAX98091.pdf

Related Products

• MAX98090：Ultra-Low Power Stereo Audio Codec
• MAX98096：Audio Hub with Wideband FlexSound Processor
• MAX98095：Audio Hub with FlexSound Processor

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