DSPs Do DAP Dance

Performing digital-audio processing (DAP) chores, the SigmaDSP family of DSPs welcomes three members: the ADAV400, ADAU1701, and ADAU1702. For audio/video applications, the ADAV400 operates at 125 MHz and integrates a 56-bit audio processing core with a/d and d/a converters that specify a better than 95-dB dynamic range. The device includes a delay memory feature that ensures video and audio are in sync and supports 16 channels of digital I/O. For digital-audio systems, the ADAU1701 and ADAU1702 offer users a choice of either a 50- or 25-MHz DSP engine. Both devices integrate a/d and d/a converters, I2S, delay memory, self-boot, external control, and pushbutton and volume control interfaces. Also, they eliminate the need for a separate processor or microcontroller. Prices for the ADAV400, ADAU1701, and ADAU1702 are $5.63, $3.72, and $2.93 each/10,000, respectively. ANALOG DEVICES, INC., Norwood, MA. (800) 426-2564.