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To: darren_ who wrote (31594)	4/21/1999 3:55:00 PM
From: Dan B.	Respond to of 33344

>>National Semiconductor Announces Fully Compliant AC'97 Rev2.1 Audio Codec; National Extends Integrated Audio Offerings with LM4549 AC '97 Rev2.1 Codec National Semiconductor Corporation(R) (NYSE:NSM), co-author of the Audio Codec '97 common architecture standard for PC audio devices,.....The AC'97 standard, defined by a consortium of ADI, Creative Labs, Intel, National Semiconductor and Yamaha, was first announced in May 1996. ..."The demand for high quality sound for both desktop and notebook computers is what is driving National to develop leading edge audio solutions,........minimizes unwanted coupling of noisy digital system signals. Similarly, separation of the digital audio controller from the analog codec allows significant improvements in signal-to-noise ratio. .........provides a critical building block in the development of National's system-on-a-chip solutions. .....will allow our customers to offer an unparalleled audio experience to consumers." ....For increased battery life, which is key for portable devices, the LM4549 operates at a digital voltage range of 3.0V to 5.0V and an analog voltage of 4.2V to 5.0V. The LM4549 AC'97 also features a multiple codec option and analog 3-D for maximum audio performance. The LM4549 achieves impressive analog performance with only .01 percent total harmonic distortion plus noise (THD+N) and over a 97dB signal-to-noise ratio. .... Price and Availability The LM4549, housed in a 48-pin TQFP (thin quad flatpack), is priced at $3.50 in quantities of 1000. It will be available in production quantities in May 1999. ...<< go2net.newsalert.com