PLL is an automatic control system adjusting controlled oscillator frequency to be equal to reference oscillator frequency multiplied by a given integer ratio. Frequency adjustment is carried out by using negative feedback. A phase detector compares a controlled oscillator output with a reference signal. The result is a charge pump current output that supplies feedback low-pass filter and converted to a voltage for controlled oscillator adjustment.
Clock divider is used to generate signals with specified frequency.
This block designed for CMOS UMC 65 nm technology.
- CMOS UMC 65 nm
- Integer-N frequency synthesizer with good phase noise performance
- Guaranteed frequency range 550…750 MHz
- Wide continuous loop frequency divider ratio range (16..2047 with step 1) allow to cover frequency range using different reference frequency
- Wide continuous reference frequency divider ratio range (1..31 with step 1) allow to use high reference frequency or reach high frequency resolution
- Integrated lock detector circuit with high accuracy
- Integrated loop filter with adjustment ability
- No external components required
- Low power consumption
- Supported foundries: TSMC, UMC, Global Foundries, SMIC
- Schematic or NetList
- Abstract model (.lef and .lib files)
- Layout view (optional)
- Behavioral model (Verilog)
- Extracted view (optional)
- DRC, LVS, antenna report
- Test bench with saved configurations (optional)
- Portable transmitters and transceivers