A 1.2-MHz 5.8-mu W Temperature-Compensated Relaxation Oscillator in 130-nm CMOS

作者：Huang Kuo Ken^*; Wentzloff David D

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2014, 61(5): 334-338.

DOI：10.1109/TCSII.2014.2312634

• CMOS technology
• low-power electronics
• oscillators
• wireless sensor networks

This brief presents a low-power temperature-compensated relaxation oscillator in 130-nm CMOS for cubic millimeter wireless sensor node applications. An RC network is proposed for the oscillator, which introduces a zero in the transfer function, creating an additional degree of freedom in the step response used for frequency-temperature compensation. This approach uses conventional CMOS resistor and capacitor options and is fully integrated. The oscillator has a measured nominal frequency of 1.24 MHz with 1.0% variation from -20 degrees C to 60 degrees C. It occupies an area of 0.02 mm(2) and consumes 5.8 mu W of active power with a leakage power of 440 pW.

• 出版日期2014-5