The Fractional-N Frequency Synthesizers generate a stable clock from low frequency reference clock.
The synthesizers are able to set fractional multiplication for (1/2)^16 step, and spread spectrum clock generation is available.
Have mass production results at each technology node.
Fractional-N Frequency Synthesizer (40nm - 110nm)
Overview
Key Features
- Fractional/Integer-N frequency synthesizing.
- Spread spectrum clock generation (SSCG) function. (TSMC 40nm (CLN40ULP), UMC 55nm(LP) only)
- Spread spectrum tracking.
- Includes Unlock Detector. (TSMC 40nm (CLN40ULP), UMC 55nm(LP) only)
Applications
- General Purpose
Deliverables
- GDSII
- CDL netlist
- Verilog model
- Synopsys synthesis model
- LEF
- User Guidelines
Technical Specifications
Foundry, Node
TSMC 40nm (CLN40ULP), 110nm(CLN110G), UMC 55nm(LP)
Maturity
In Production
TSMC
In Production:
40nm
LP
,
110nm
G
Silicon Proven: 40nm LP , 55nm LP , 110nm G
Silicon Proven: 40nm LP , 55nm LP , 110nm G
UMC
In Production:
55nm
Silicon Proven: 55nm
Silicon Proven: 55nm
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