Sunnyvale, Calif. - Maxim Integrated Products' MAX5858 is a dual, 10-bit, 300-Msample/second D/A converter with digital interpolation filters integrated on-chip. The filters separate the generated images, making the analog filter following the D/A cost-effective and easy to design, Maxim said. In addition, the interpolation filters lower the input data rate and reduce the inherent D/A roll off.
The device has two, 10-bit D/A cores, 2x/4x programmable digital interpolation filters, divide-by-N clock output and an internal reference. The converter also features digital control of channel gain matching to within plus/minus 0.4 dB in sixteen 0.05-dB steps. The unit is specified over the 2.7- to 3.3-volt operating range. At a 20-MHz output frequency (165-MHz sample rate), the spurious-free dynamic range is 75 dBc. The adjacent-channel leakage ratio is 69 dBc when the output frequency is 30.7 MHz (3.8-MHz channel).
Its performance and on-board interpolation filters make the device suitable for such communication systems as point-to-point microwave links, LMDS, MMDS, wireless-LAN basestations and VSAT terminals, the company said.
The MAX5858 is available in a space-saving, 48-pin thin quad flat pack specified for the industrial temperature range (-40 degrees C to 85 degrees C). Prices start at $11.80 in quantities of 1,000 or more. An evaluation kit is available to speed designs.
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