An RC Oscillator With Comparator Offset Cancellation

被引：91

作者：

Paidimarri, Arun ^{[1
]}

Griffith, Danielle ^{[2
]}

Wang, Alice ^{[3
]}

Burra, Gangadhar ^{[4
]}

Chandrakasan, Anantha P. ^{[1
]}

机构：

[1] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[2] Texas Instruments Inc, Dallas, TX 75243 USA

[3] Mediatek, Hsinchu 300, Taiwan

[4] Qualcomm, San Jose, CA 95110 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2016年 / 51卷 / 08期

关键词：

Allan deviation; Allan variance; crystal replacement; guard time; offset cancellation; RC oscillator; Schmitt trigger; startup time; temperature stability; timing accuracy; ACHIEVABLE PHASE NOISE; CMOS;

D O I：

10.1109/JSSC.2016.2559508

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A fully-integrated 18.5 kHz RC time-constant-based oscillator is designed in 65 nm CMOS for sleep-mode timers in wireless sensors. A comparator offset cancellation scheme achieves 4x to 25x temperature stability improvement, leading to an accuracy of +/- 0.18% to +/- 0.55% over -40 to 90 degrees C. Subthreshold operation and low-swing oscillations result in ultra-low power consumption of 130 nW. The architecture also provides timing noise suppression, leading to 10x reduction in long-term Allan deviation. It is measured to have a stability of 20 ppm or better for measurement intervals over 0.5 s. The oscillator also has a fast startup-time, with the period settling in 4 cycles.

引用

页码：1866 / 1877

页数：12

共 50 条

[1] A 12.4-kHz On-chip RC Oscillator with Comparator Offset Cancellation for PVT Variation Tolerance
Wang, Jiacheng
Goh, Wang Ling
2016 INTERNATIONAL SYMPOSIUM ON INTEGRATED CIRCUITS (ISIC), 2016,
[2] A 120nW 18.5kHz RC Oscillator with Comparator Offset Cancellation for ±0.25% Temperature Stability
Paidimarri, Arun
Griffith, Danielle
Wang, Alice
Chandrakasan, Anantha P.
Burra, Gangadhar
2013 IEEE INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE DIGEST OF TECHNICAL PAPERS (ISSCC), 2013, 56 : 184 - +
[3] On-chip dual-phase charge-transfer relaxation oscillator with comparator offset cancellation
Ma, Yanzhao
Cui, Kai
Fang, Song
Fan, Xiaoya
ELECTRONICS LETTERS, 2018, 54 (01) : 23 - 24
[4] A Low-Offset Dynamic Comparator with Input Offset-Cancellation
Pei, Ruihan
Liu, Jia
Tang, Xian
Li, Fule
Wang, Zhihua
2017 IEEE 12TH INTERNATIONAL CONFERENCE ON ASIC (ASICON), 2017, : 132 - 135
[5] A Novel Offset Cancellation Technique for Dynamic Comparator Latch
Choi, Ricky Yiu-kee
Tsui, Chi-ying
2012 IEEE 55TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS), 2012, : 614 - 617
[6] Low Power Comparator with Offset Cancellation Technique for Flash ADC
Nasrollahpour, M.
Sreekumar, R.
Hamedi-Hagh, S.
2017 14TH INTERNATIONAL CONFERENCE ON SYNTHESIS, MODELING, ANALYSIS AND SIMULATION METHODS AND APPLICATIONS TO CIRCUIT DESIGN (SMACD), 2017,
[7] A 40 nW 32.7 kHz CMOS Relaxation Oscillator with Comparator Offset Cancellation for Ultra-Low Power applications
Medeiros, William Teles
Klimach, Hamilton
Bampi, Sergio
2020 IEEE 11TH LATIN AMERICAN SYMPOSIUM ON CIRCUITS & SYSTEMS (LASCAS), 2020,
[8] An offset cancellation technique in a switched-capacitor comparator for SAR ADCs
佟星元
朱樟明
杨银堂
半导体学报, 2012, 33 (01) : 144 - 148
[9] An offset cancellation technique in a switched-capacitor comparator for SAR ADCs
Tong Xingyuan
Zhu Zhangming
Yang Yintang
JOURNAL OF SEMICONDUCTORS, 2012, 33 (01)
[10] A Low-Offset Dynamic Comparator with Area-Efficient and Low-Power Offset Cancellation
Zhong, Xiaopeng
Bermak, Amine
Tsui, Chi-Ying
2017 IFIP/IEEE INTERNATIONAL CONFERENCE ON VERY LARGE SCALE INTEGRATION (VLSI-SOC), 2017, : 148 - 153

← 1 2 3 4 5 →