Linear Technology has announced the LTC6946, the first device in a family of high performance integer-N frequency synthesizers that integrates a low noise 5.7GHz phase-locked loop (PLL), which includes a reference divider, phase-frequency detector (PFD) with phase-locked indicator, ultralow noise charge pump, and integer feedback divider. The device is available in three frequency options: the LTC6946-1 tunes from 2.240GHz to 3.740GHz; the LTC6946-2 from 3.080GHz to 4.910GHz; and the LTC6946-3 covers 3.840GHz to 5.790GHz. Applications include multiband basestations supporting LTE, W-CDMA, UMTS, CDMA, GSM and WiMAX standards. It also supports point-to-point broadband wireless access, military, avionics, and high performance test and measurement applications.
- integrated VCO
- -226dBc/Hz normalized closed-loop in-band phase noise
- normalized in-band 1/f noise of -274dBc/Hz
- best-in-class -103dBc spurious output
In a typical 900MHz application, Linear Technology reports that the LTC6946 can enable closed-loop phase noise of -100dBc/Hz at 1kHz offset. More Information:Data Sheet