PLL – A fully integrated 1 MHz to 3 GHz Radiation Hardened All-Digital Frequency Synthesizer.
Description
The MAG-PLL is a radiation tolerant wideband phase locked loop (PLL), capable of delivering frequencies in the 1 MHz to 3 GHz range. The on-chip DCO covers an entire octave resulting in full coverage when using the output divider. The MAG-PLL includes a PWM generator using a maximum carrier frequency of 1 GHz, resulting in a minimum time step of 1 ns. A 16-bit digital control word sets the pulse width. The MAG-PLL has an integrated digitally configurable loop filter and digital controlled oscillator (DCO), effectively reducing the number of external components required. A serial interface is provided to configure the PLL and allows users to read the status of operation.
Radiation hardness
- TID tolerance: 1 kGy
- SET/SEU: > 75 MeV∙cm²/mg
Key technical specifications
- 1.2 V core voltage operation
- Output frequency range 1  MHz – 3  GHz
- Integrated jitter < 500 fs
- User selectable input reference
- External crystal or clock generator
- User selectable output signaling:
- LVCMOS-12 output up to 200 MHz
- LVDS-25 output up to 3 GHz
- Additional complementary PWM output
- 1 ns pulse width control
- Oscillator with temperature sensor
- Serial control and diagnostic interface
Applications
- Satellites
- On-board clock generation
- Serial communication links
- Clock cleaning
- Jitter filtering
- Switching power supplies
