Abstract
A spread spectrum clock generator (SSCG) with a hybrid controlled oscillator (HCO) is presented. By using the proposed HCO, the modulation ratio of an SSCG can be made insensitive to process, voltage and temperature variations without a ΣΔ fractional-N phase-locked loop. The simulated modulation ratio sensitivities are as low as -1.3/100°C and 7.0/V for temperature and VDD, respectively. The SSCG IC, designed in a 0.18m 1P4M CMOS process, operates from 40 to 90MHz and consumes 5.5mA from a 1.8V supply voltage.
| Original language | English |
|---|---|
| Pages (from-to) | 1146-1147 |
| Number of pages | 2 |
| Journal | Electronics Letters |
| Volume | 45 |
| Issue number | 23 |
| DOIs | |
| State | Published - 2009 |