A Resistor-Less nW-Level Bandgap Reference With Fine-Grained Voltage and Temperature Coefficient Trims

被引：2
|
作者：
Bass, Ori [1 ]
Feldman, Asaf [1 ]
Shor, Joseph [1 ]
机构：
[1] Bar Ilan Univ, Fac Engn, IL-5290002 Ramat Gan, Israel
来源：
IEEE OPEN JOURNAL OF CIRCUITS AND SYSTEMS | 2022年 / 3卷
基金：
以色列科学基金会;
关键词：
Capacitors; Switches; Resistors; Impedance; Photonic band gap; Frequency measurement; Temperature measurement; Bandgap reference; switched capacitor circuits; low power analog; 1-V;
D O I：
10.1109/OJCAS.2022.3206326
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A nW-level BJT-based bandgap reference with fine grained voltage and temperature coefficient trimming is presented. The bandgap reference utilizes switched capacitors (SC) as impedance elements instead of resistors in a current mode configuration. This configuration enabled low power (38nW) with a minimal area (0.0174 mm2). The voltage could be trimmed independently without affecting the temperature coefficient. The SC's are stacked in order to achieve accurate trimming without using unrealistically small capacitors. The temperature coefficient can be trimmed between 50-200 ppm/degrees C in either direction, while the voltage can be trimmed between 580-800mV.
引用
收藏
页码：192 / 198
页数：7
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