Abstract
In microprocessors and DRAMs, on-chip temperature sensors are essential
components, ensuring reliability by monitoring thermal gradients and hot
spots. Such sensors must be as small as possible, since multiple
sensors are required for dense thermal monitoring. However, conventional
BJT-based temperature sensors are not compatible with the sub-1V supply
of advanced processes. Subthreshold MOSFETs can operate from lower
supplies, but at high temperatures their performance is limited by
leakage [1,2]. Thermal diffusivity (TD) sensors achieve sub-1V operation
and small area with moderate accuracy, but require milliwatts of power
[3]. Recently, resistor-based sensors based on RC WienBridge (WB)
filters have realized high resolution and energy efficiency [4,5].
Fundamentally, they are robust to process and supply-voltage scaling.
However, their readout circuitry has been based on continuous-time (CT)
ΔΣ ADCs or frequency-locked loops (FLLs), which require precision analog
circuits and occupy considerable area (>0.7mm
2
).
Original language | English |
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Title of host publication | 2018 IEEE International Solid-State Circuits Conference, ISSCC 2018 |
Subtitle of host publication | Digest of Technical Papers |
Editors | L.C. Fujino |
Place of Publication | Piscataway, NJ |
Publisher | IEEE |
Pages | 322-324 |
Number of pages | 3 |
Volume | 61 |
ISBN (Electronic) | 978-1-5090-4940-0 |
ISBN (Print) | 978-1-5386-2227-8 |
DOIs | |
Publication status | Published - 2018 |
Event | 65th IEEE International Solid-State Circuits Conference, ISSCC 2018 - San Francisco, United States Duration: 11 Feb 2018 → 15 Feb 2018 |
Conference
Conference | 65th IEEE International Solid-State Circuits Conference, ISSCC 2018 |
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Country/Territory | United States |
City | San Francisco |
Period | 11/02/18 → 15/02/18 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- Temperature sensors
- Frequency locked loops
- Temperature measurement
- Jitter
- Phase frequency detector