Maxim Integrated Products has a zero-IF (ZIF) tuner for UHF-band MMDS applications.
Maxim Integrated Products has a zero-IF (ZIF) tuner for UHF-band MMDS applications. The device will receive QPSK signals in the 470MHz to 1000MHz range and then downconverts them to baseband for demodulation.
Specifically designed for China's UHF-band MMDS systems, the MAX2117 is compatible with most DVB-S demodulators.
A low 8dB (typ) noise figure, combined with a better than 25dB (typ.) adjacent-channel protection ratio (ACPR), makes this device ideal for MMDS applications.
The device operates from a single, 3.3V +/-5 per cent supply and consumes 330mW.
Though it has been designed to operate with a low-cost 4MHz crystal, an internal reference divider allows the user to select any crystal in the 4MHz to 8MHz range.
The MAX2117 is available in a 5x5mm, 28-pin TQFN package.
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