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WM8960 Low Power, Stereo Codec with Class D Speaker Drivers

Cirrus Logic’s WM8960 features high-efficiency Class D speaker drivers to provide 1 W per channel into 8 Ω speakers

Image of Cirrus Logic's WM8960 Stereo Codec with Class D Speaker Drivers Cirrus Logic's WM8960 is a low power stereo codec featuring Class D speaker drivers to provide 1 W per channel into 8 W loads. Guaranteed low leakage, excellent PSRR, and pop/click suppression mechanisms enable direct battery connection for the speaker supply. This IC integrates a complete microphone interface and a stereo headphone driver. External component requirements are drastically reduced as no separate microphone, speaker, or headphone amplifiers are required. Advanced on-chip digital signal processing performs automatic level control for the microphone or line input. Stereo 24-bit delta-sigma converters are used with low power over-sampling digital interpolation and decimation filters and a flexible digital audio interface. The master clock can be input directly or generated internally by an onboard PLL supporting most commonly used clocking schemes.

Block Diagram

Image of Cirrus Logic's WM8960 Block Diagram

Features
  • High fidelity stereo audio with high speaker power output
    • High efficiency stereo class D speaker drivers deliver 1 W per channel into 8 Ω speakers from a 5 V supply
    • The 24-bit stereo ADCs and DACs use Cirrus Logic's audio architecture providing high performance at very low power
    • Stereo headphone and line drivers with full analog volume control are integrated with headphone detection support
    • A complete stereo differential microphone interface provides high gain and low noise recording at hi-fi quality
  • Integrated headphone detection jack
    • Removes the requirements for external jack detect component
  • Supports capless mode for headphone
    • OUT3 mono mixer configurable as mono output or virtual Vmid out
  • Integrated PLL
    • The master clock can be input directly or generated internally by an onboard PLL, supporting most commonly-used clocking schemes
  • Reduces external component count
    • Low leakage, high PSRR, anti-pop mechanisms, and flexible signal boosting also enable direct battery connection, reducing external components, and minimizing power consumption
    • External component requirements are drastically reduced as no separate microphone, speaker, or headphone amplifiers are required
    • Advanced on-chip digital signal processing performs automatic level control for the microphone or line input
  • Extends battery life in active, standby, and off modes
    • The WM8960 operates at analog supply voltages down to 2.7 V, although the digital core can operate at voltages down to 1.71 V to save power
    • The speaker supply can operate at up to 5.5 V, providing >1 W per channel into an 8 Ω load
    • For power optimization, sections of the chip can be powered down under software control
  • Compact size
    • The WM8960 is supplied in a very small and thin 5 mm x 5 mm x 0.9 mm QFN package
Applications
  • Portable audio
  • Gaming consoles and controllers
  • Bluetooth speakers
  • MP3 players
  • A/V products
  • Wearables
  • Industrial/medical products with requirements for loudspeaker output
WM8960 in a Typical System Application

Image of Cirrus Logic's WM8960 Typical Applications

WM8960 Codec Speaker Driver

ImageManufacturer Part NumberDescriptionTypeResolution (Bits)Number of ADCs / DACsAvailable QuantityView Details
IC CODEC CLASS D SPKR DVR 32QFNWM8960CGEFL/VIC CODEC CLASS D SPKR DVR 32QFNStereo Audio24 b2 / 217694 - ImmediateView Details

Eval Board

ImageManufacturer Part NumberDescriptionTypeFunctionUtilized IC / PartAvailable QuantityView Details
EVAL BD - WM8960 MINI EVAL BOARDCDBWM8960-M-1EVAL BD - WM8960 MINI EVAL BOARDAudioCODECWM89608 - ImmediateView Details
Published: 2018-10-30