A low power temperature sensor based on a voltage to time converter cell
Author | Mohamad, Saqib |
Author | Fang Tang |
Author | Bermak, Amine |
Author | Amira, Abbes |
Author | Benammar, Mohieddine |
Available date | 2023-04-05T08:36:43Z |
Publication Date | 2013 |
Publication Name | 2013 25th International Conference on Microelectronics, ICM 2013 |
Resource | Scopus |
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. |
Language | en |
Publisher | IEEE |
Subject | Current sources Input voltages Temperature compensated Temperature independents Temperature range Time to digital converters Two-point calibration Voltage-to-time converter Microelectronics Temperature sensors |
Type | Conference |
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Electrical Engineering [2685 items ]