Abstract
A process and temperature compensation technique, namely, composite resistor, is adopted for the current controlled oscillators (CCOs). The core is a ring oscillator (RO) and oscillates at 1 MHz at room temperature (25°C) with 50% duty cycle. The temperature compensation is achieved between-20°C and 100°C, and after trimming, the inaccuracies of the output frequencies, 1 MHz, and 0.5 MHz, are below ±1% (3σ) in the same temperature range. As a result, 2 outputs are temperature compensated. The oscillator core consumes 750 nA, the biasing circuit consumes 360 nA, and the complete system consumes 1.256 μA, corresponding to 2 μW at 1.6 V battery voltage. The design, occupying 130 μm × 285 μm die area, is realized in a 0.18 μm Mixed-Signal RF Salicide (1P6M, 1.8V/3.3V) CMOS process.
Original language | English |
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Title of host publication | 2019 IEEE 10th Latin American Symposium on Circuits and Systems, LASCAS 2019 - Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 29-32 |
Number of pages | 4 |
ISBN (Electronic) | 9781728104522 |
DOIs | |
Publication status | Published - 14 Mar 2019 |
Event | 10th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2019 - Armenia, Colombia Duration: 24 Feb 2019 → 27 Feb 2019 |
Publication series
Name | 2019 IEEE 10th Latin American Symposium on Circuits and Systems, LASCAS 2019 - Proceedings |
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Conference
Conference | 10th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2019 |
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Country/Territory | Colombia |
City | Armenia |
Period | 24/02/19 → 27/02/19 |
Bibliographical note
Publisher Copyright:© 2019 IEEE.
Keywords
- Composite resistor
- current controlled oscillator
- dynamic element matching (DEM)
- low voltage current biasing
- ring oscillator
- room temperature trim