<正>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 Chartered0.35μm CMOS process.The output current is 1.5μA,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 mm~2.
【英文摘要】
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 Chartered0.35μm CMOS process.The output current is 1.5μA,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 mm~2.
【基金】
Project supported by the National High Technology Research and Development Program of China(No.2009AA011607)
【更新日期】
2011-04-01
【分类号】
TN432
【正文快照】
1 .IntroduCtion A eurrent referenee 15 an esseniial building bloek in al-most all analog andm议ed一signal systems as a bias for vari-ous eireuits，sueh as amPlifiers，oseillators，filters，and 50 on.It 15 therefore deslrable to generate a Preeise referenc
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