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Transactions: WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS
Transactions ID Number: 27-747
Full Name: Radu Mihaescu
Position: Engineer
Age: ON
Sex: Male
Address: Gheorghe Lazar str., no. 9, 300081, Timisoara
Country: ROMANIA
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E-mail address: Radu.Mihaescu@alcatel-lucent.ro
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Title of the Paper: Second-Order Thermal-Compensated Total-Current Reference
Authors as they appear in the Paper: Radu Dan Mihaescu, Mircea A. Ciugudean
Email addresses of all the authors: radu.mihaescu@alcatel-lucent.ro,mircea.ciugudean@etc.upt.ro
Number of paper pages: 10
Abstract: This paper includes the study of a very simple reference current source, with cross-connected known current mirrors, where the thermal-compensation of the sum of branch currents (the total current) is done. This kind of approach is adequate when the reference must supply current in a charge with grounded or connected to voltage supply end. The first and second-order thermal compensation of the reference current are analyzed and the equations representing the total current compensation conditions are established. The current reference is designed in a CMOS 0.35µm process and his quality has been verified by simulation. The simulation results show the possibility of achieving good performances for a total current of 8...15µA, across a temperature range of 0 - 100oC: for only first-order thermal compensation, an average thermal drift of -200 ppm/ oC (or a maximum variation < 2%) and for second-order thermal compensation – a maximum variation < 0.45%.
Keywords: analog integrated circuits, reference-current source, thermal compensation
EXTENSION of the file: .doc
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