The LMX2820 is a high-performance, wideband
synthesizer that can generate any frequency in the range of 45 MHz to 22.6 GHz. The high
performance PLL with figure of merit of –236 dBc/Hz and high phase detector frequency can
attain very low in-band noise and integrated jitter. The high-speed N-divider has no
pre-divider, thus significantly reducing the amplitude and number of spurs. There is also a
programmable input multiplier to mitigate integer boundary spurs.
The LMX2820 allows users to synchronize the output
of multiple devices and also enables applications that need deterministic delay between
input and output. The fast calibration algorithm greatly reduces the VCO calibration time,
enabling systems requiring fast frequency hopping. The LMX2820 can generate or repeat SYSREF
that is compliant to the JESD204B standard, allowing for its use as a low-noise clock source
for high-speed data converters. This synthesizer can also be used with an external VCO. A
direct PFD input pin is provided to support offset mixing for low spurious transmission.
The device runs from a single 3.3-V supply and has
integrated LDOs that eliminate the need for onboard low-noise LDOs.
The LMX2820 is a high-performance, wideband
synthesizer that can generate any frequency in the range of 45 MHz to 22.6 GHz. The high
performance PLL with figure of merit of –236 dBc/Hz and high phase detector frequency can
attain very low in-band noise and integrated jitter. The high-speed N-divider has no
pre-divider, thus significantly reducing the amplitude and number of spurs. There is also a
programmable input multiplier to mitigate integer boundary spurs.
The LMX2820 allows users to synchronize the output
of multiple devices and also enables applications that need deterministic delay between
input and output. The fast calibration algorithm greatly reduces the VCO calibration time,
enabling systems requiring fast frequency hopping. The LMX2820 can generate or repeat SYSREF
that is compliant to the JESD204B standard, allowing for its use as a low-noise clock source
for high-speed data converters. This synthesizer can also be used with an external VCO. A
direct PFD input pin is provided to support offset mixing for low spurious transmission.
The device runs from a single 3.3-V supply and has
integrated LDOs that eliminate the need for onboard low-noise LDOs.