Mono 93/95 dB Codec with Speaker Driver

The WM8510 is a low power, high quality mono codec with integrated support for one pseudo-differential and one single-ended input (handset mic and speaker mic), and includes drivers for speakers or headset. Separate microphone or earpiece amplifiers are not required. Advanced Delta Sigma converters are used, along with digital decimation and interpolation filters, to give high quality audio at sample rates from 8 to 48 kHz. Additional digital filtering options are available in the A/D converter path to provide application filtering such as ‘wind noise reduction.’ An advanced mixed-signal ALC function with noise gate is provided. An on-chip PLL is provided to generate the required main clock from an external reference clock. The PLL clock can also be output if required elsewhere in the system. Different sections of the chip can be powered down under software control by way of the selectable two or three wire control interface.



Mono/Stereo Codecs


Mono codec:
  • Audio sample rates:8, 11.025, 16, 22.05, 24, 32, 44.1, 48 kHz
  • DAC SNR 93 dB, THD -84 dB (‘A’-weighted @ 8 – 48 kHz)
  • ADC SNR 90 dB, THD -80 dB (‘A’-weighted @ 8 – 48 kHz)
  • On-chip headphone/speaker driver with ‘cap-less’ connect
    • 40mW output power into 16Ω / 3.3V SPKVDD
    • BTL speaker drive 0.8W into 8#8486; / 5V SPKVDD
  • Earpiece line output
  • Multiple analog inputs, plus analog bypass path (0 or -10 dB)
  • Mic Preamps
  • Two microphone interfaces
    • One pseudo-differential input with common mode rejection
    • One single ended input
    • Programmable preamp gain
    • Programmable ALC / noise gate in ADC path
  • Low-noise bias supplied for microphone
Other features:
  • Digital playback limiter
  • Programmable ADC high pass filter (wind noise reduction)
  • Programmable ADC notch filter
  • On-chip PLL
  • Low power, low voltage
    • 2.5V to 3.6V (digital supplies: 1.71V to 3.6V)
    • Power consumption <10mW all-on 48 kHz mode
    • 28 lead SSOP package

Parametric Specifications

Channels In 1
Channels Out 1
DAC THD+N (dB) -84 (THD)
ADC THD+N (dB) -80 (THD)
Analog Power Supply (V) 2.5-3.6
Digital Power Supply (V) 1.7-3.6
Logic Power Supply (V) 2.5-5.5
Operational Power Consumption (mW) <10mW
Package 28 SSOP


Comprehensive Solutions