The WEA728S45G is a two-octave microwave fractional-N frequency synthesizer with integrated phase sync function, suitable for applications where phase coherency is required, such as phased array systems.
It uses a reference input ranging from 25 MHz to 300 MHz, either generated with a Crystal and the integrated Crystal Oscillator or provided from an LVDS driver.
The WEA728S45G generates RF signals spanning from a frequency of 7 GHz up to 28 GHz using a bank of four integrated VCOs a RF frequency doubler.
The synthesizer integrates automatic VCO and VCO-Band selection system.
The WEA728S45G is powered by 1.8 V supply.
It is implemented in the GlobalFoundries 45RFSOI process.
7 GHz to 28 GHz Low phase Noise Fractional-N Synthesizer
Overview
Key Features
- Low Phase Noise
- Low pin count
- Reference input: 25 MHz to 300 MHz
- Output frequency range: 7 GHz to 28 GHz with the use of RF Frequency Doubler
- Integrated RMS jitter:101.7 fs @ 7GHz output
- PLL Noise floor: -108.5 dBc/Hz @ 100 KHz offset @ 7 GHz
- Banerjee figure of merit: -222 dBc/Hz
- 2nd harmonic: -42 dBc
- 3rd harmonic: -26 dBc
- Lock time: <5 us
- Programmable Charge Pump
- Programmable order MASH, 16 -24 Bit MASH
- Programmable Loop Filter
- Bank of LC-VCOs with 128 Bands/VCO
- Automatic VCO/Band Selection System
- RF, Analog Supply 1.8 V
- Consumption: 360mW
- Area:1600 mm * 1600 mm
Block Diagram
Applications
- 5G Infrastructure, VSAT
Technical Specifications
Foundry, Node
GLOBALFOUNDRIES 45nm 45RFSOI
Maturity
silicon verified
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