Resistorless Frequency Locked On-Chip Oscillator with Proportional-to-Absolute Temperature References-Reference-Cited by-同舟云学术

Resistorless Frequency Locked On-Chip Oscillator with Proportional-to-Absolute Temperature References

Published:2019-09 Issue:10 Volume:28 Page:1950162
ISSN:0218-1266
Container-title:Journal of Circuits, Systems and Computers
language:en
Short-container-title:J CIRCUIT SYST COMP

Author:

Han Peiqing¹²,Mei Niansong¹,Zhang Zhaofeng¹

Affiliation:

1. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, P. R. China

2. University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Abstract

A 36-kHz frequency locked on-chip oscillator is proposed, the proportional-to-absolute temperature (PTAT) current and voltage generator is presented to eliminate conventional temperature-compensated resistors. The resistorless approach reduces the process variation of frequency and the chip area. The oscillator is fabricated in 0.18-[Formula: see text]m standard CMOS process with an active area of 0.072[Formula: see text]mm2. The temperature coefficient of frequency is 48[Formula: see text]ppm/∘C at best and 82.5[Formula: see text]ppm/∘C on average over [Formula: see text]–70∘C and the frequency spread is 1.43% ([Formula: see text]/[Formula: see text] without calibration. The supply voltage sensitivity is 1.8%/V in the range from 0.65[Formula: see text]V to 1[Formula: see text]V and the power consumption is 95[Formula: see text]nW under the supply voltage of 0.65[Formula: see text]V.

Publisher

World Scientific Pub Co Pte Lt

Subject

Electrical and Electronic Engineering,Hardware and Architecture,Electrical and Electronic Engineering,Hardware and Architecture

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0218126619501627

Reference8 articles.

1. A 110 nW Resistive Frequency Locked On-Chip Oscillator with 34.3 ppm/°C Temperature Stability for System-on-Chip Designs

2. A 0.7-V 0.43-pJ/cycle Wakeup Timer Based on a Bang-Bang Digital-Intensive Frequency-Locked-Loop for IoT Applications

3. Nanopower CMOS Relaxation Oscillators With Sub-100 $\hbox{ppm}/^{\circ}\hbox{C}$ Temperature Coefficient

4. A Reference-Free Capacitive-Discharging Oscillator Architecture Consuming 44.4 pW/75.6 nW at 2.8 Hz/6.4 kHz

5. A $\pm$0.5% Precision On-Chip Frequency Reference With Programmable Switch Array for Crystal-Less Applications

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