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An approach for designing analog current-mode circuits with very-low supply voltage requirements is described and applied to the implementation of basic complementary metal-oxide-semiconductor (CMOS) building blocks. The method is based on a biasing circuit exploiting poly resistors and auxiliary differential amplifiers which restricts supply requirements to one threshold voltage plus three saturation voltages. As design examples, a complementary current mirror, a current operational amplifier, and a transconductor are implemented adopting the proposed technique. SPICE simulations using a 0.5-μm process are provided which closely confirm the expected overall good performance of these circuits especially in terms of low-voltage capability and speed
Published in:
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
(Volume:49
,
Issue:
4
)
Date of Publication: Apr 2002
- Page(s):
- 273 - 279
- ISSN :
- 1057-7130
- INSPEC Accession Number:
- 7340863
- Digital Object Identifier :
- 10.1109/TCSII.2002.801463
- Date of Current Version :
- 07 August 2002
- Issue Date :
- Apr 2002
- Sponsored by :
- IEEE Circuits and Systems Society
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