Multiple PLL combination reference design for <40-fs jitter (100-Hz to 100-MHz)
Description
The TIDA-01346 design uses two LMX2594 synthesizers in combination to produce lower noise than is possible with just one. By combining the output of two synthesizers that are in phase: a theoretical 3 dB phase noise benefit is possible due to the output power being 6 dB higher while the noise power is only 3 dB higher. The LMX2594 is an ideal synthesizer for this application as it has a SYNC feature that allows it to have deterministic and repeatable phase as well as a programmable phase that can be used to correct for any phase error due to trace mismatches or any other factors.
Features
- 3 to 12.5 GHz Output Frequency40-fs rms Jitter at 9GHz (100 Hz to 100 MHz)
Applications
- Oscilloscopes & digitizers
- Spectrum analyzer
- Electronic warfare
- Seeker front end
- Global positioning system receiver
- Outdoor backhaul unit
- Radar
- Power analyzer
- Parametric measurement unit (PMU)
- Flat panel display (FPD) shorting bar pattern generator
- Temperature controller
- Indoor backhaul
- Wireless communications test
Product Categories
- RF & microwave