Methods for Designing High-Precision Relaxation Oscillator
Year: 2025
Type: article
Abstract: A novel low-power delay time cancellation (LPDTC) technique and a current ratio adjustment (CRA) method are proposed for designing high-precision relaxation oscillators. These methods effectively reduce the impacts of comparator delay time, offset voltage, and temperature-induced variations in resistors. To validate these methods, we have designed and simulated an 8 MHz open-loop relaxation oscillator using a 40 nm CMOS process. The oscillator, incorporating these advanced methods, achieves a line sensitivity of 0.38%/V and a temperature sensitivity of 43 ppm/°C over a temperature range of -40 °C to 125 °C.
Source: Micromachines
DOI: 10.3390/mi16040364
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,534
OpenAlex ID: W4408779013