SEMICONDUCTOR INTEGRATED CIRCUITS

A resistorless CMOS current reference with temperature compensation

Yan Wei, Tian Xin, Li Wenhong and Liu Ran

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Abstract: A resistorless CMOS current reference is presented. Temperature compensation is achieved by subtracting two sub-currents with different positive temperature coefficients. The circuit has been implemented with a Chartered 0.35 μm CMOS process. The output current is 1.5 μA, and the circuit works properly with a supply voltage down to 2 V. Measurement results show that the temperature coefficient is 98 ppm/℃, and the line regulation is 0.45%/V. The occupied chip area is 0.065 mm2.

Key words: current reference

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    Received: 18 August 2015 Revised: 23 October 2010 Online: Published: 01 March 2011

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      Yan Wei, Tian Xin, Li Wenhong, Liu Ran. A resistorless CMOS current reference with temperature compensation[J]. Journal of Semiconductors, 2011, 32(3): 035006. doi: 10.1088/1674-4926/32/3/035006 Yan W, Tian X, Li W H, Liu R. A resistorless CMOS current reference with temperature compensation[J]. J. Semicond., 2011, 32(3): 035006. doi: 10.1088/1674-4926/32/3/035006.Export: BibTex EndNote
      Citation:
      Yan Wei, Tian Xin, Li Wenhong, Liu Ran. A resistorless CMOS current reference with temperature compensation[J]. Journal of Semiconductors, 2011, 32(3): 035006. doi: 10.1088/1674-4926/32/3/035006

      Yan W, Tian X, Li W H, Liu R. A resistorless CMOS current reference with temperature compensation[J]. J. Semicond., 2011, 32(3): 035006. doi: 10.1088/1674-4926/32/3/035006.
      Export: BibTex EndNote

      A resistorless CMOS current reference with temperature compensation

      doi: 10.1088/1674-4926/32/3/035006
      • Received Date: 2015-08-18
      • Accepted Date: 2010-09-01
      • Revised Date: 2010-10-23
      • Published Date: 2011-02-23

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