Tunable oscillator of reference frequency

Reference oscillator is used to generate reference frequency and can work at the 1st or the 3rd harmonic of quartz resonator. Operating frequency is defined by external quartz resonator and external component values. Output peak-to-peak limitation system is used to reduce current consumption. Commutable capacitors are used to change carrier frequency that allows generating a frequency shift keying signal in a case of application in a transmitter. Output
resonant circuit is used to select the 2nd or 3rd harmonic.
The block is fabricated on iHP SiGe BiCMOS 0.25 um (SGB25V) technology.

• iHP SGB25V
• Operation at the 1st or the 3rd harmonic of a quartz resonator
• The 2nd or the 3rd output harmonic selection
• Oscillator frequency shift keying signal
• External frequency oscillator operation in a buffer mode
• Low current consumption
• High temperature stability using temperature-compensated resonator
• Low frequency time response
• Small area
• Portable to other technologies (upon request)

• Frequency multiplier
• Reference signal former
• PLL frequency synthesizer
• Transmitters

• Schematic or NetList
• Abstract model (.lef and .lib files)
• Layout view (optional)
• Behavioral model (Verilog)
• Extracted view (optional)
• GDSII
• DRC, LVS, antenna report
• Test bench with saved configurations (optional)
• Documentation