Hot-selling and scarce WM8998ECS/R High Performance Audio Hub CODEC BGA spot stock

Product Descriptions

The WM8998[1]  is  a  highly-integrated  low-power  audio  hub CODEC for  smartphones,  tablets  and  other  portable  audio  devices. It is optimised for use in multimedia devices wherethe  audio  processing  requirements  are  implemented  on  the  host applications processor.

The WM8998 digital  core  combines  fixed-function  signal  processing blocks with a fully-flexible, all-digital audio mixing and  routing  engine,  for  extensive  use-case flexibility. Signal processing  blocks  include  filters,  EQ,  dynamics  processors  and sample rate converters.

A SLIMbus interface supports multi-channel audio paths and host  control  register  access.  Multiple  sample  rates  are  supported  concurrently  via  the  SLIMbus  interface.  Three  further digital audio interfaces are provided, each supporting a  wide  range  of  standard  audio  sample  rates  and  serial  interface  formats.  Automatic  sample  rate  detection  enables  seamless wideband/narrowband voice call handover.

The stereo  headphone  driver  provides  ground-referenced outputs,  with  noise  levels  as  low  as  1μVRMS  for  hi-fi  quality  line  or  headphone  output.  The  CODEC  also  features  a stereo line  output,  stereo  2W  Class-D  speaker  outputs,  a  dedicated  BTL  earpiece  output,  PDM  for  external  speaker  amplifiers,and an    IEC-60958-3    compatible    S/PDIF    transmitter. A signal generator for controlling haptics devices is included; vibe actuators can connect directly to the Class-D  speaker  output,  or  via  an  external  driver  on  the  PDM  output  interface.  All  inputs,  outputs  and  system  interfaces  can function concurrentlyver.

The WM8998 supports  up  to  six  analogue mic/line  inputs, and  up  to  three  PDM  digital  inputs.  The  input  multiplexers  support   up   to   three   signal   paths.   Microphone   activity   detection  with  interrupt  is  available.  A  smart  accessory  interface   supports   most   standard   3.5mm   accessories.   Impedance   sensing   and   measurement   is   provided   for   external accessory and push-button detection.

Product Features

•    Hi-Fi audio hub CODEC for mobile applications

•    Digital audio processing core

- Fully flexible digital signal routing and mixing

- Wind noise, sidetone and other programmable filters

- Dynamic Range Control (compressor, limiter)

- Fully parametric EQs

- Low-pass / High-pass filters

•    Multi-channel asynchronous sample rate conversion

•    Integrated multi-channel 24-bit hi-fi audio hub CODEC

- 3 ADCs, 96dB SNR microphone input (48kHz)

- 7 DACs, 122dB SNR headphone playback (48kHz)

•    Audio inputs

- Up to 6 analogue or 3 digital microphone inputs

- Single-ended or differential mic/line inputs

•    Stereo headphone output driver

- 28mW into 32Ω load at 0.1 percent THD+N

- 6.9mW typical headphone playback power consumption

- Pop suppression functions

- 1μVRMS noise floor (A-weighted)

•    Ground-referenced line output driver

- Stereo single-ended or Mono differential configuration

•    Mono BTL earpiece output driver

- 100mW into 32Ω BTL load at 5 percent THD+N

•    Stereo (2 x 2W) Class D speaker output drivers

- Direct drive of external haptics vibe actuators

•    Two-channel digital speaker (PDM) output interface

•    IEC-60958-3 compatible S/PDIF transmitter

•    SLIMbus audio and control interface

•    3 full digital audio interfaces

- Standard sample rates from 8kHz up to 192kHz

- TDM support on all AIFs

- 6 channel input and output on AIF1 and AIF2

•    Flexible clocking, derived from MCLKn, BCLKn or SLIMbus

•    2 low-power FLLs support reference clocks down to 32kHz

•    Advanced accessory detection functions

- Low-power standby mode and configurable wake-up

•    Configurable functions on 5 GPIO pins

•    Integrated LDO regulators and charge pumps

•    Support for single 1.8V supply operation

•    Small W-CSP package, 0.4mm pitch

Product Applications

•    Smartphones and Multimedia handsets

•    Tablets and Mobile Internet Devices (MID)

Product Specification

Product Photos

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