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Asahi Kasei Microsystems’ Single-Chip Audio CODEC offers a video buffer for cameras

Asahi Kasei Microsystems (AKM) launches the AK4632 , a 16-bit mono A/D and D/A converter for digital still/video cameras, that is bursting with features. This chip, which runs on minimal power, boasts a microphone, piezoelectric speaker-compatible amplifiers with automatic level control and a built-in video buffer for direct output to TV. The key advantage of this chip over the AK4631, already widely used for digital still-camera sound processing, is the integral video buffer. The AK 4632 saves board-mounting space and reduces manufacturing costs by integrating all of the audio and video camera functions on the single chip, a CMOS process that lowers power consumption at the same time. The 6 dB gain video buffer supports both AC and DC output modes.The built-in gain control amplifier will fine tune video signal levels over a range from “1 dB to +10.5 dB. High-quality video signals are reproduced by minimizing repetitive noise from the TV side with a higher order LPF. In addition to saving mounting space,the DC output mode eliminates the need for low frequency correction and large DC cut capacitors. AKM Asahi Kasei Microsystems , WD1 8YH Watford, UK. www.akm.com.

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