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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.

特色

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
Supported foundries: TSMC, UMC, Global Foundries, SMIC, iHP, AMS, Vanguard, SilTerra