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Detection of on-chip temperature gradient using a 1.5V low power CMOS temperature sensor

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4 Author(s)
Yiming Zhai ; Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD ; Prakash, S.B. ; Cohen, M.H. ; Abshire, P.A.

We present a 1.5V low power CMOS temperature sensor for detection of on-chip temperature gradients. The temperature sensor has measured accuracy of+/- 0.25degC over a temperature range from 25degC to 97degC. The power consumption of a single temperature sensor is 96nW and the layout occupies 64.8mum2 in a 0.5mum CMOS technology. A chip with spatially non-uniform heat generation devices and an array of temperature sensors was fabricated and tested. Experimental results demonstrate that the sensors successfully detect the induced temperature gradient on the chip

Published in:

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Date of Conference:

21-24 May 2006