24-bit, 192 kHz, 8-channel D/A Converter Supports SACD DSD and DVD Formats

Single-chip enables universal" audio disc players

San Jose, California, March 28th, 2003 - Asahi Kasei Microsystems Semiconductor, Inc. (AKM), a leading supplier of audio ICs for professional and consumer markets today introduced the AK4358, an 8-channel D/A converter compatible with both the SACD DSD format and DVD-Audio 24-bit, 192 kHz sampling format. The AK4358 delivers superior cost value for performance in DVD, SACD, AV receiver, and car audio applications.

The 8-channel, multi-format-compatibility AK4358 is based on AKMs previously-released AK4357, 6-channel DAC and offers a host of key features. These include reduced out-of-band noise achieved through the use of AKMs advanced multi-bit architecture and excellent anti-jitter performance from the switched capacitor DAC.

In order to minimize power consumption in todays multi-channel design, the AK4358 uses new low-power internal circuitry for a 12 percent improvement in power consumption efficiency, without adversely affecting audio performance.    

Other key functions of the AK4358 are dedicated input ports for direct stream digital (DSD), which enables switching between PCM and DSD data. A built-in Low Pass Filter, specifically designed for DSD/SACD, enables Scarlet Book" filter compliance to be easily achieved by adding a simple external analog filter.

The same output level is set for PCM data and DSD data so that digital volume and zero-detect functions work in the same way for both PCM and DSD data. This unifies playback levels without the need to be aware of what data format is being used.

Price and Availability
The AK4358 is available in a 48-pin LQFP package. Evaluation boards and samples are available now. The part is priced at $5.21 in 1K quantities. Evaluation boards and samples are available now directly from AKM.

About AKM
Asahi Kasei Microsystems (AKM) is a worldwide leader in CMOS mixed-signal ICs for the personal computer, professional audio, consumer electronics, automotive, and cellular phone industries. AKM is a subsidiary of the Asahi Kasei Corporation. a diversified technology, manufacturing and services company. To obtain more information, contact AKM Semiconductors, 2001 Gateway Place, Suite 650 West, San Jose, CA 95110 or call toll free at (888) 256-7364 or 408-436-8580. Visit the company's Web site at http://www.akm.com.