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Wolfson Microelectronics Co., Ltd. is about to launch a world's smallest codec (CODEC), the WM8987, which has a built-in headphone driver with full differential capability. The WM8987 delivers high-fidelity stereo sound for head-mounted wireless headsets or other "wearable" electronics. The new device is designed for use with Bluetooth® A2DP (Bluetooth Audio Transmission Model Protocol) and is an equivalent patented alternative when used in wireless headsets for high fidelity stereo sound.Wolfson's new WM8987L offers high performance and low power consumption in a small 4mm x 4mm package. It operates at a supply voltage of 1.8V and can be used at 3.3V for larger audio frequencies. The WM8987L differentially drives the headphone load, eliminating the need for output capacitors. The bass response and longer battery life reduce PCB (printed circuit board) size and BOM (bill of materials) costs.
"The new generation of 'wearable' audio and gaming headsets, MP3 players, FM radios and digital audio broadcast receivers require the same sound quality as indoor hi-fi, and are challenging for size, cost and power circuitry. Sex. Our new solution is designed to meet these requirements," said Nat Edington, portable product business manager at Wolfson Microelectronics. "Now everyone expects wireless headsets to have high fidelity stereo sound quality, while Wolfson It has achieved an impressive position in this market, and in the past two years, the supply of such devices has exceeded 3 million."
The performance of this new CODEC includes: 87dB (A-weighted) for recording when recording at 1.8V, 95dB for playback, built-in bass boost, tone control and 3 -D enhancements to improve sound quality; micro power management to turn off unused subcircuits to extend battery life; and with a differential microphone connection, 4 flexible analog inputs reduce electrical noise while also supporting on-chip FM tuning Analog line input.
The WM8987L is available now in a 4 x 4 x 0.75mm 28-pin COL QFN package. The purchase price is 10,000 and is priced at $1.71.
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