Wolfson Microelectronics plc Introduces 192kHz Digital Audio Interface Products For Audio Applications

7-Aug-03

Wolfson Microelectronics plc introduced two new digital audio interface products for the consumer audio and professional markets. The WM8803 digital audio receiver and the WM8802 digital audio transmitter allow manufacturers to integrate 192 kHz S/PDIF solutions into their designs. These products are intended to be ideal solutions to target consumer and professional applications such as audio/video receivers, DVD receivers, DVD-R/RW players, personal video recorders (PVRs), portable music players, and digital mixing consoles. ""The WM8803 and WM8802 enable a new level of audio performance for the next generation of digital entertainment systems,"" said David Milne, Wolfson's CEO and Managing Director. ""More and more we see systems manufacturers looking to Wolfson to explore, leverage, and develop high-performance new audio components for optimal digital solutions on their products."" The WM8803 is a digital audio interface receiver conforming to IEC 60958/61937 and EIAJ CP-1201. The WM8803 receives and decodes digital audio data with sample rates up to 192 kHz and utilizes a low-jitter clock recovery mechanism to yield a clean, recovered clock from the incoming audio stream. The WM8803 is a single-input device but also a flexible digital output port that allows the user access to channel status pre-emphasis information, input signal sampling frequency, sub-code Q data with the associated CRC flags, and other status data. It provides several low-power modes, supporting applications that require long battery life, such as portable audio devices and PDAs. The WM8802 digital audio transceiver accepts and encodes audio and digital data, which is then multiplexed, encoded, and driven onto a cable/optical transmission interface. Data input to the serial digital audio data input pin can also be modulated using the on-board PLL or with the use of an external clock source. The WM8802 can support up to six data inputs and one data output which provides a number of flag outputs including PCM data valid, de-emphasis, lock, and IEC 61937, DTS-CD/LD detection. The WM8803 and WM8802 are fully compatible with EIAJ CP1201, IEC60958/61937, S/PDIF, and AES3 standards. Both digital audio interface products have 5-volt tolerant digital inputs and operate from a 3.3-volt power supply, and allow for standalone operation in systems with no microcontroller. Finally, the WM8803 and WM8802 are designed with the intention of being the perfect companion chips for products like the WM8772 and the WM8770 audio codecs for the target applications mentioned above. Price And Availability The WM8803 and WM8802 are available in 24-pin TSSOP or 48-pin SQFP packages, respectively. The WM8803 is currently priced at $3.71 and the WM8802 at $4.85 in quantities of 10,000. For more information about Wolfson Microelectronics, visit www.wolfsonmicro.com.

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