EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX98050 Low-Power, High-Performance Audio Codec General Description Applications The MAX98050 is a low-power, high-performance audio True Wireless Hearables and Headsets CODEC with integrated low-latency digital filters for wire- Stereo Bluetooth Headsets and Headphones less hearables, headsets, and headphones. Mono Bluetooth Earpieces PSAP Devices and Hearing Assist Devices The device features a mono playback channel with a VR/AR Headsets and Head-Mounted Devices 5-band biquad equalizer and a high-efficiency, fully differ- ential hybrid class-AB/class-D headphone amplifier. The Benefits and Features playback headphone amplifier is optimized for extremely low output noise levels and minimized quiescent power Low-Latency Digital Filter Channels consumption while maximizing output power efficiency. 96kHz/192kHz/384kHz Sample Rate Options Channel Support Applications Including Feed- The device includes three microphone input channels ca- Forward (FF) and Feedback (FB) ANC, Ambient/ pable of supporting voice, ambient, and anti-noise record Voice Enhancement and Transparency, and use cases. Each channel can individually record from ei- Playback Compensation ther an external analog or digital microphone, and then Filters Allowing Smooth, Dynamic Transitions / can route audio data to both the record channels (to the Updates without Playback Disruption digital audio interface) and the internal low-latency digital filter channels. A fourth record channel to the digital audio Mono Headphone Playback Channel interface is provided to allow the host to monitor the play- High-Efficiency Hybrid Class-AB/D Amplifier back channel output digital data. 114dB Playback Dynamic Range 2.55mW P (f = 48kHz, No Noise Gate) Q S Two low-latency, digital filter channels are provided that 1.9mW P (f = 48kHz, With Noise Gate) Q S can support a variety of use cases. These include noise cancellation applications (feed-forward, feedback, and hy- Three Microphone Record Channels Analog or Digital Microphone Inputs brid filter profiles), both voice and ambient enhancement and transparency applications, and sidetone applications. 107dB Dynamic Range (AMIC Single-Ended) Each channel provides a 12-band digital biquad filter, a 113dB Dynamic Range (AMIC Differential)) DRC or Limiter stage, a digital volume control block, and 5.3mW P (f = 16kHz, 2 AMIC Record) Q S an ultrasound filter. In addition, a third internal digital filter 2.1mW P (f = 16kHz, 2 DMIC Record) Q S channel is provided in the playback channel that is struc- Playback with ANC Filter Profile (f = 192kHz) S tured for playback compensation and/or general feedback 9.85mW P (AMIC FF+FB Profile) Q compensation filters. This channel includes a 10-band bi- 6.7mW P (AMIC FF Only Profile) Q quad filter and a digital volume control block. To support 7mW P (DMIC FF+FB Profile) Q dynamic or adaptive filter and use case transitions, the bi- Full-Scale Playback Power at 1% THD+N: quad filters and volume controls provide banked profiles that can be updated/swapped without disruption to audio 31mW into 32 (1V Full-Scale Mode) RMS playback. 15mW into 32 (Reduced Swing Mode) 61mW into 16 (1V Full-Scale Mode) RMS The flexible digital audio interface supports common PCM 2 2 audio data formats such as I S, left-justified, and TDM tim- Flexible I S/TDM Digital Audio Interface ing with 16-bit, 24-bit, or 32-bit data word and channel Support for 16/24/32-Bit Audio Data lengths. The PCM interface supports playback sample Playback Sample Rates of 8kHz to 192kHz rates from 8kHz to 192kHz and record sample rates from No High-Speed Master Clock Required 8kHz to 48kHz. The device requires external bit and frame Audio CODEC Evaluation Platform Available clocks but eliminates the need for a high-speed external Includes Maxim Reference Headset Design master clock. 2 6.7mm 36-Bump WLP Package 2 The device is available in a small 6.7mm 36-bump WLP package (0.4mm pitch) with a low 0.5mm height ideal for 0.4mm Pitch with a 0.5mm Height tight form factors. The device operates over the extended -40C to +85C temperature range. Ordering Information appears at end of data sheet. 19-100956 Rev 0 11/20MAX98050 Low-Power, High-Performance Audio Codec Simplified Block Diagram 1.2V AND 1.8V 1.2V AND 1.8V MICROPHONE MICROPHONE MICROPHONE MICROPHONE SUPPLIESSUPPLIES BIAS SUPPLYBIAS SUPPLY BIAS OUTPUTSBIAS OUTPUTS AMIC INPUT 1AMIC INPUT 1 HARDWARE HARDWARE POWERPOWER MICROPHONE MICROPHONE ADCADC PGAPGA ENABLEENABLE MANAGEMENTMANAGEMENT BIASBIAS AMIC INPUT 2AMIC INPUT 2 22 22 II C CONTROLC CONTROL II C CONTROL C CONTROL ADCADC PGAPGA MAX98050MAX98050 BUS BUS INTERFACEINTERFACE AMIC INPUT 3AMIC INPUT 3 ADCADC PGAPGA RECORD RECORD MICROPHONE INPUT CHANNELMICROPHONE INPUT CHANNEL CHANNELSCHANNELS & & PLAYBACK MONITOR FILTERSPLAYBACK MONITOR FILTERS DMIC INPUTSDMIC INPUTS THREE THREE 22-CHANNEL DMIC -CHANNEL DMIC PCM PCM LOW-LATENCY LOW-LATENCY LOW-LATENCY LOW-LATENCY PCM AUDIO PCM AUDIO 22 INTERFACESINTERFACES ((II S S / TDM) / TDM) DIGITAL FILTERDIGITAL FILTER DIGITAL FILTERDIGITAL FILTER INTERFACE INTERFACE BUS BUS CHANNEL CHANNEL 11 CHANNEL CHANNEL 22 HP OUTPUTHP OUTPUT PLAYBACK EQ & PLAYBACK EQ & PLAYBACK PLAYBACK HP HP COMPENSATIONCOMPENSATION DACDAC CHANNELCHANNEL AMPAMP FILTERS FILTERS www.maximintegrated.com Maxim Integrated 2 MICROPHONE INPUT CHANNEL SELECTMICROPHONE INPUT CHANNEL SELECT