MPEG II/AC-3, Audio Clock Generator is the Most Versatile for Audio, Digital Set-Top, and HDTV Systems
SUNNYVALE, CA-August 23, 2004-Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX9485, a multiple-output, audio clock generator ideal for high-end audio, DVD, digital STB, and home-entertainment systems. The MAX9485 has excellent jitter performance of 21 picoseconds root-mean-square at 73.728MHz. The low-jitter clocks provide optimal dynamic performance for ADCs and DACs in audio systems.
The MAX9485 has three buffered outputs, the first of which provides a fixed 27MHz clock. Two identical, programmable buffered outputs support multiple audio clocks of 256 sampling frequency (fs), 384 sampling frequency, and 768 sampling frequency, selected through hard-wired pins or an integrated I2C™ interface operating at 400kbps.
The device supports all audio clock requirements including MPEG II and AC3. The sampling frequency can be chosen as 12kHz, 16kHz, 32kHz, 44.1kHz, 48kHz, 64kHz, 88.2kHz, or 96kHz.
The MAX9485 integrates a VCXO that is controlled by a voltage-input pin for fine frequency tuning. The device uses a 27MHz crystal as the reference, and is the one clock generator in its class to utilize an SMD crystal. The VCXO offers a wide tuning range of 27MHz ±200ppm. For low-power and space-constrained platforms, the MAX9485 operates from a single 3.3V supply and is offered in two small-footprint packages: a 6.5mm x 4mm, 20-pin TSSOP and a 4mm x 4mm, 20-pin TQFN.
The device operates over the extended temperature range (-40 degrees Celsius to +85 degrees Celsius). Prices start at $2.50 (1000-up, FOB USA).
Purchase of I2C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips.
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