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A simple built-in current sensor for current monitoring in mixed-signal circuits

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2 Author(s)
Siskos, S. ; Dept. of Phys., Aristotelian Univ. of Thessaloniki, Greece ; Hatzopoulos, A.A.

Quiescent current monitoring is an interesting and efficient technique for mixed-signal testing where fault detection of analog parts requires the precise measure of the Iddq. This paper presents a very simple current sensor for on-chip current monitoring giving a precise analog output proportional to the quiescent current. Simulations show feasibility of the sensor to operate at high frequencies. This circuit may also operate at low supply voltage (±1.5 V), and due to its simplicity, the silicon area overhead is very small

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Instrumentation and Measurement, IEEE Transactions on  (Volume:46 ,  Issue: 6 )