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Design of a CMOS temperature sensor with current output

✍ Scribed by Arjan Kölling; Frans Bak; Piet Bergveld; Evert Seevinck

Book ID
103957249
Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
406 KB
Volume
22
Category
Article
ISSN
0924-4247

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✦ Synopsis

In this paper a CMOS temperature-to-current converter IS presented of which the output current 1s the difference between a PTC current and an NTC current The PTC current 1s denved from a PTAT cell, while the NTC current 1s denved from a threshold voltage reference source It 1s shown that this way of current subtraction dlmuushes to a certam extent the effects of the thermal dependence of the resistors used IlltTOdUCtiOll

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This work presents the design of a CMOS quadrature voltage-controlled oscillator (QVCO) constructed in a totem-pole configuration in order to reuse the bias current and lower the power consumption. A new feature of using four RC delay lines connected at the output ports of an oscillator is adopted i