Title :
Interface electronics for a CMOS electrothermal frequency-locked-loop
Author :
Zhang, C. ; Makinwa, K.A.A.
Author_Institution :
Delft Univ. of Technol., Delft
Abstract :
A new architecture for a CMOS electrothermal frequency-locked-loop (FLL) is presented. Unlike previous work, it does not require the use of off-chip capacitors. The FLL´s output frequency is determined by the well-defined thermal diffusivity of bulk silicon. Measurements show that the spread in the FLL´s output frequency corresponds to an untrimmed inaccuracy of less than plusmn0.7degC (3sigma) over the temperature range from -40degC to 100degC.
Keywords :
CMOS integrated circuits; frequency locked loops; temperature sensors; CMOS electrothermal frequency-locked-loop; interface electronics; off-chip capacitors; temperature -40 C to 100 C; thermal diffusivity; Bipolar transistors; Capacitors; Choppers; Electrothermal effects; Frequency locked loops; Preamplifiers; Silicon; Temperature sensors; Thermal sensors; Voltage-controlled oscillators;
Conference_Titel :
Solid State Circuits Conference, 2007. ESSCIRC 2007. 33rd European
Conference_Location :
Munich
Print_ISBN :
978-1-4244-1125-2
DOI :
10.1109/ESSCIRC.2007.4430301
