Title :
A 200-MHz CMOS phase-locked loop with dual phase detectors
Author :
Ware, Kurt M. ; Lee, Hae-Seung ; Sodini, Charles G.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA
fDate :
12/1/1989 12:00:00 AM
Abstract :
A high-frequency integrated CMOS phase-locked loop (PLL) including two phase detectors is presented. The design integrates a voltage-controlled oscillator, a multiplying phase detector, a phase-frequency detector, and associated circuitry on a single die. The loop filter is external for flexibility and can be a simple passive circuit. A 2-μm CMOS p-well process was used to fabricate the circuit. The loop can lock on input frequencies in excess of 200 MHz with either or both detectors and consumes 500 mW from a single 5-V supply. The oscillator is a ring of three inverting amplifiers and draws from an internal supply voltage regulated by an on-chip bandgap reference. This combination serves to reduce the supply and temperature sensitivity is less than 5%/V, and the oscillator temperature variation is 2.2% in the range of 25 to 80°C. The typical oscillator tuning range is 112 to 209 MHz. The multiplying phase detector and phase-frequency detector exhibit input-referred phase offsets of <4° and -24°, respectively. A numerical system simulation program was written to explore the time-domain behavior of an idealized model based on the PLL design
Keywords :
CMOS integrated circuits; linear integrated circuits; phase-locked loops; tuning; variable-frequency oscillators; 112 to 209 MHz; 2 micron; 200 MHz; 25 to 80 degC; 5 V; 500 mW; CMOS p-well process; dual phase detectors; external loop filter; integrated HF PLL; internal supply voltage; inverting amplifier ring; multiplying phase detector; numerical system simulation program; on-chip bandgap reference; phase-frequency detector; phase-locked loop; single 5-V supply; time-domain behavior; tuning range; voltage-controlled oscillator; CMOS process; Passive circuits; Passive filters; Phase detection; Phase frequency detector; Phase locked loops; Ring oscillators; Temperature distribution; Temperature sensors; Voltage-controlled oscillators;
Journal_Title :
Solid-State Circuits, IEEE Journal of