Abstract
One presents a new variant of temperature relay scheme for CMOS chips, based on a simple structure of voltage source with two cross-connected current mirrors (of modified-Widlar type and simple one). In this scheme the positive feedback is exploited which is designed so that, for a particular temperature the circuit toggles. In this moment his output voltage achieves a level jump, great enough to drive an interface circuit with the relay-signalisation processing part. The relay toggle condition is deduced, which clears up the relay function. The releasing temperature may be programmed in a large range through one or two resistors. The simulation results are presented for the relay conceived in 0.35μm CMOS process. The releasing-temperature process variation is reduced, by a special design procedure, to a maximum value of ±5.5oC.
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© 2013 Springer-Verlag Berlin Heidelberg
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Ciugudean, M.A., Bălaş, M.M. (2013). CMOS-Integrated Temperature Relay Based on Widlar Mirror. In: Balas, V., Fodor, J., Várkonyi-Kóczy, A., Dombi, J., Jain, L. (eds) Soft Computing Applications. Advances in Intelligent Systems and Computing, vol 195. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33941-7_29
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DOI: https://doi.org/10.1007/978-3-642-33941-7_29
Publisher Name: Springer, Berlin, Heidelberg
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