STMicroelectronics STuW81300
The STuW81300 includes a dual architecture frequency synthesizer (Fractional-N and IntegerN), four low phase noise VCOs with a fast automatic center frequency calibration providing a very wide frequency range, from 1.925 GHz to 16 GHz, with a single device. The STuW81300 optimizes size and cost of the final application by the integration of low noise LDO voltage regulators and internally matched broadband RF outputs.FEATURES
● Output frequency range: 1.925 GHz to 16 GHz – RF out 1 (VCO, VCO÷2): 1.925-8.0 GHz – RF out 2 (VCO x 2): 7.7-16.0 GHz● Very low noise – Normalized phase noise floor: -227 dBc/Hz – VCO phase noise (6.0 GHz): -131 dBc/Hz @ 1 MHz offset – Noise floor (6.0 GHz): -158 dBc/Hz – Phase noise (12 GHz): -125 dBc/Hz @ 1 MHz offset – Noise floor (12 GHz): -154 dBc/Hz
● Integrated VCOs with fast automatic center frequency calibration
● External VCO option with 5 V charge pump
● Fundamental VCO rejection at doubler output higher than 20 dB
● Internally broadband matched RF outputs delivering +6 dBm @6 GHz and +4 dBm @12 GHz single-ended
● Integrated low noise LDOs
● Maximum phase detector frequency: 100 MHz
● Exact frequency mode
● Differential reference clock input (LVDS and LVECPL compliant) supporting up to 800 MHz
● Integrated reference crystal oscillator core
● R/W SPI interface
● Logic compatibility/tolerance 1.8 V/3.3 V
● Supply voltage: 3.0 V to 5.4 V
● Small size exposed pad VFQ...