A 25MHz all-CMOS reference clock generator for XO-replacement in serial wire interfaces

—A 25MHz all-CMOS clock generator is demonstrated where measured performance makes it suitable for direct replacement of the reference crystal oscillator (XO) for serial wire interfaces. Fabricated in a 0.25μm 1P5M logic CMOS process, and with no external components, the developed clock generator dissipates 59.4mW while exhibiting ±152ppm frequency error over process, ±10% variation in the power supply voltage and from –5–75ºC. Nominal period jitter and power-on start-up latency are 3.93psrms and 268μs respectively.

• Type: Conference
• Year: 2008
• Where: ISCAS
• Authors: Michael S. McCorquodale, Scott M. Pernia, Sundus Kubba, Gordy A. Carichner, Justin D. O'Day, Eric D. Marsman, Jon Kuhn, Richard B. Brown
• Keywords: All-CMOS Clock Generator, Clock Generator, Developed Clock Generator, Hardware, ISCAS 2008