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Stereo Audio CODEC Sports USB Controller and S/PDIF I/O Terminal

Claimed as industryÕs first stereo audio CODEC family with a built-in USB controller and an internal S/PDIF-compatible I/O terminal, the PCM290x series is targeted at mini-stereo decks, portable CD/cassette radios, headphone/ microphone combo units and domestic-use robots. The PCM290x family includes four products with two different power supply formats: the USB bus-powered PCM2900 and PCM2902 with an operating voltage of 2.7V to 3.6V, and the self-powered PCM2901 and PCM2903 with an operating voltage of 5V. With a 16-bit resolution and maximum sample rate of 48 kHz, the family has a dynamic range of 89 dB (typical) for a/d converters and 93 dB (typical) for d/a converters with 0.005% THD+N (typical) in self-powered products. In addition, the series contains built-in protection against unauthorized copying (SCMS), is full duplex compatible with a 12-MHz on-chip clock generator, and features HID (human interface device), volume and mute control. The series also contains a suspend flag feature that saves power in target applications. Each chip in the series is controlled by the USB drivers included in the OS software, eliminating the need for specialized drivers and making product development more efficient, the company says. Packaged in a 28-pin SSOP, pricing for the PCM 2900/01 is 3.95 each/1,000 and for the PCM2902/03 is $4.25. TEXAS INSTRUMENTS INC., Dallas, TX. (800) 477-8924.


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