Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
547956 | Microelectronics Journal | 2008 | 7 Pages |
Abstract
This paper describes a CMOS voltage reference that makes use of weak inversion CMOS transistors and linear resistors, without the need for bipolar transistors. Its operation is analogous to the bandgap reference voltage, but the reference voltage is based on the threshold voltage of an nMOS transistor. The circuit implemented using 0.35 μm n-well CMOS TSMC process generates a reference of 741 mV under just 390 nW for a power supply of only 950 mV. The circuit presented a variation of 39 ppm/°C (after individual resistor trimming) for the −20 to +80 °C temperature range, and produced a line regulation of 25 mV/V for a power supply of up to 3 V.
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Physical Sciences and Engineering
Computer Science
Hardware and Architecture
Authors
Luis H.C. Ferreira, Tales C. Pimenta, Robson L. Moreno,