A low power temperature sensor based on a voltage to time converter cell
Abstract
In this paper we propose a temperature sensor, based on a voltage to time converter cell (VTC). A VTC is frequently employed in time to digital converters for generating a delay that is proportional to the input voltage. The delay can then be digitized using a simple ripple counter at the output driven by a temperature independent clock. The power consumption of the proposed sensor is extremely low at 250nW, with an inaccuracy of +0.8°C to −1.5°C after two point calibration. A comparator with switchable bias currents is used to reduce the power consumption, while the temperature compensated current source is implemented using a low power current source. The sensor also exhibits high linearity over the 0 to 100 °C temperature range, while being powered by a 1.8V supply.
Collections
- Electrical Engineering [2811 items ]
Related items
Showing items related by title, author, creator and subject.
-
Tailoring the reducibility and catalytic activity of CuO nanoparticles for low temperature CO oxidation
Zedan, Abdallah F.; Mohamed, Assem T.; El-Shall, M. Samy; AlQaradawi, Siham Y.; AlJaber, Amina S. ( Royal Society of Chemistry , 2018 , Article)Copper oxide (CuO) nanoparticles have received considerable interest as active and inexpensive catalysts for various gas–solid reactions. The CuO reducibility and surface reactivity are of crucial importance for the high ... -
Global maps of soil temperature
Lembrechts, Jonas J.; van den Hoogen, Johan; Aalto, Juha; Ashcroft, Michael B.; De Frenne, Pieter; Kemppinen, Julia; Kopecký, Martin; Luoto, Miska; Maclean, Ilya M.D.; Crowther, Thomas W.; Bailey, Joseph J.; Haesen, Stef; Klinges, David H.; Niittynen, Pekka; Scheffers, Brett R.; Van Meerbeek, Koenraad; Aartsma, Peter; Abdalaze, Otar; Abedi, Mehdi; Aerts, Rien; Ahmadian, Negar; Ahrends, Antje; Alatalo, Juha M.; Alexander, Jake M.; Allonsius, Camille Nina; Altman, Jan; Ammann, Christof; Andres, Christian; Andrews, Christopher; Ardö, Jonas; Arriga, Nicola; Arzac, Alberto; Aschero, Valeria; Assis, Rafael L.; Assmann, Jakob Johann; Bader, Maaike Y.; Bahalkeh, Khadijeh; Barančok, Peter; Barrio, Isabel C.; Barros, Agustina; Barthel, Matti; Basham, Edmund W.; Bauters, Marijn; Bazzichetto, Manuele; Marchesini, Luca Belelli; Bell, Michael C.; Benavides, Juan C.; Benito Alonso, José Luis; Berauer, Bernd J.; Bjerke, Jarle W.; Björk, Robert G.; Björkman, Mats P.; Björnsdóttir, Katrin; Blonder, Benjamin; Boeckx, Pascal; Boike, Julia; Bokhorst, Stef; Brum, Bárbara N.S.; Brůna, Josef; Buchmann, Nina; Buysse, Pauline; Camargo, José Luís; Campoe, Otávio C.; Candan, Onur; Canessa, Rafaella; Cannone, Nicoletta; Carbognani, Michele; Carnicer, Jofre; Casanova-Katny, Angélica; Cesarz, Simone; Chojnicki, Bogdan; Choler, Philippe; Chown, Steven L.; Cifuentes, Edgar F.; Čiliak, Marek; Contador, Tamara; Convey, Peter; Cooper, Elisabeth J.; Cremonese, Edoardo; Curasi, Salvatore R.; Curtis, Robin; Cutini, Maurizio; Dahlberg, C. Johan; Daskalova, Gergana N.; de Pablo, Miguel Angel; Della Chiesa, Stefano; Dengler, Jürgen; Deronde, Bart; Descombes, Patrice; Di Cecco, Valter; Di Musciano, Michele; Dick, Jan; Dimarco, Romina D.; Dolezal, Jiri; Dorrepaal, Ellen; Dušek, Jiří; Eisenhauer, Nico; Eklundh, Lars; Erickson, Todd E.; Erschbamer, Brigitta... more authors ... less authors ( Wiley , 2022 , Article)Research in global change ecology relies heavily on global climatic grids derived from estimates of air temperature in open areas at around 2 m above the ground. These climatic grids do not reflect conditions below vegetation ... -
Reinforcement of polyacrylamide-co-tert-butyl acrylate base gel using nanosilica for conformance control at low and high reservoir temperatures
Shamlooh M.; Hamza A.; Hussein I.A.; Nasser M.S.; Salehi S. ( Society of Petroleum Engineers (SPE) , 2020 , Conference)Challenges of water shut-off, which is categorized under conformance control, are nowadays common in the oil and gas industry. The excessive water quantities produced from oil reservoirs can make the production process ...