Title :
Relaxation oscillator output voltage linearity
Author :
Danchiv, Andrei ; Simion, Alexandru ; Bodea, Mircea ; Dan, Claudius
Author_Institution :
Dept. of Electron. & Telecomm., Bucharest Politehnica Univ., Romania
Abstract :
This paper analyses the output voltage nonlinearity of current switching relaxation oscillator. An analytical model - taking into account the current sources finite output resistance - is developed, in order: (1) to get more precise design equation for transistor length; and (2) to evaluate the oscillation amplitude influence on the oscillation frequency. The results obtained for an oscillator realized using a standard 0.6 μm CMOS process were checked by SPICE simulation.
Keywords :
CMOS analogue integrated circuits; integrated circuit design; integrated circuit modelling; relaxation oscillators; 0.6 micron; current sources finite output resistance; current switching relaxation oscillator; oscillation amplitude; oscillation frequency; output voltage linearity; transistor length; Analytical models; Capacitors; Equations; Frequency; Latches; Linearity; Mirrors; Pulse width modulation; Threshold voltage; Voltage-controlled oscillators;
Conference_Titel :
Signals, Circuits and Systems, 2005. ISSCS 2005. International Symposium on
Print_ISBN :
0-7803-9029-6
DOI :
10.1109/ISSCS.2005.1511332
