Wolfson Microelectronics has announced the introduction of its innovative WM2002 stereo headphone driver, claimed to be the world’s first commercially available digital ambient noise cancelling (ANC) application-specific integrated circuit. Featuring Wolfson’s myZone™ digital ANC technology, the WM2002 is intended to enable global electronics manufacturers to provide consumers with cost effective, mass-market noise cancelling headphones and headsets.
Using unique feed-forward noise cancellation, the WM2002 boast up to 30 dB peak active ambient noise cancellation. Depending on the acoustics implementation, the WM2002 actively cancels noise up to 3.5 kHz while maintaining exceptional audio quality so that users may listen to music or take calls in noisy environments. It delivers significant savings for manufacturers in development cost, time to market and on the production line, as well as enabling a smaller PCB footprint, which gives designers more flexibility.
Designed for embedded applications or for use in stand-alone pad-on-ear or ear-bud headsets or headphones, the WM2002 supports analogue playback and analogue or digital microphone inputs for noise monitoring microphones and complements Wolfson’s family of analogue and digital silicon micro-electro-mechanical systems (MEMS) microphones.
The WM2002 provides integrated power management with a DC/DC converter, charge pump and LDO regulators, and the entire device can be powered from a single AAA cell, two AAA cells, or an external regulated supply. The device is configured using programmable memory settings stored in integrated non-volatile memory, with a default configuration stored in one-time programmable (OTP) memory enabled automatically at start-up.
Image: Wolfson
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