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In summary, wideband PLL frequency synthesizers like the MAX2870 play a critical and diverse role in wireless communication systems. End equipment applications range from wireless infrastructure to mobile radios, as well as test and measurement equipment. The MAX2870 can be used as an LO frequency source or as a high speed data converter conversion clock source. Key performance parameters include low phase noise, low spurious, wide frequency range coverage and fine tuning resolution. The MAX2870 integrates multiple VCO cores with binary dividers to deliver ultra wideband operation from 23.5MHz to 6000MHz. Along with an integer-n PLL, the MAX2870 also integrates a fractional-n PLL to achieve fast lock time and fine tuning resolution across the entire RF range. The MAX2870 has a phase detector frequency range up to 105MHz, allowing the designer to use a high input reference frequency and low divider ratio to achieve excellent EVM system performance. MAX2870 design resources include a complete evaluation kit with software and GUI, the EE-Sim design tool and application note.

PTM Published on: 2014-02-13