Edinburgh, UK—Wolfson Microelectronics plc has started to sample what it claims is the industry’s first commercially available digital ambient noise canceling (ANC) ASIC .
The WM2002 stereo headphone driver employs the company’s proprietary myZone digital ambient noise cancellation (ANC) technology , enabling electronics manufacturers to provide consumers with cost-effective, mass market, noise canceling headphones and headsets, according to Wolfson.
· >30dB (peak), 25dB (typical) ambient noise reduction
· Wide noise cancellation bandwidth (40Hz to 4kHz)
· Audio inputs
– Up to 10 analog or digital microphones
– Single-ended or differential analog microphone input
– 2 single-ended or 1 differential line input per channel
· Headphone driver (LDO4VOUT = 1.8V)
– 45mW per channel into 16W load
– 22mW per channel into 32W load
– Single-ended or differential (BTL) drive configuration
– -80dB THD+N for differential (BTL) drive
The WM2002 provides integrated power management , consisting of a DC-DC converter, charge pump and LDO regulators. The entire device can be powered from a single cell AAA battery, two AAA cells, or from an external regulated supply.