An extreme low power voltage reference generator operating with a supply voltage ranging from 0.9 to 4 V has been implemented in AMS 0.35-mu m CMOS process. The maximum supply current measured at the maximum supply voltage and at 80 degrees C is 70 nA. A temperature coefficient of 10 ppm/degrees C is achieved as the combined effect of 1) a perfect suppression of the temperature dependence of mobility; 2) the compensation of the channel length modulation effect on the temperature coefficient; and 3) the absence of the body effect. The power supply rejection ratio without any filtering capacitor at 100 Hz arid 10 MHz is lower than -53 and -42 dB, respectively. The occupied chip area is 0.045 mm(2).
Autori interni: | ||
Autori: | G. DE VITA; IANNACCONE G | |
Titolo: | A Sub-1-V, 10 ppm/ oC, Nanopower Voltage Reference Generator | |
Anno del prodotto: | 2007 | |
Digital Object Identifier (DOI): | 10.1109/JSSC.2007.899077 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |