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A 14-µW 249-ppmC Current Reference With Process-Insensitive Temperature Compensa
一种无需微调的低压低功耗CMOS电流基准,实现高温度稳定性
0.18µm CMOS, 1V, 14µW, 249ppm/°C
电流基准温度补偿低功耗CMOS工艺不敏感
▸采用电阻与补偿电压的温度系数比值实现工艺不敏感的温度补偿
▸在0.18µm CMOS工艺下实现249ppm/°C的温度系数
▸1-V电源下仅消耗1.4µW功耗
Abstract
This paper presents a trim-free low-voltage and
low-power CMOS current reference which achieves high current
stability to temperature variation . In order to achieve process-in-
sensitive temperature compensati on, the proposed circuit employs
ratio between the process-independent temperature coef ficients of
resistor and compensation volt age. The proposed current refer-
ence is implemented in 0.18-µm CMOS technology and consumes
1.4 µW from a 1-V supply. It achieves temperature coef ficient of
2