Abstract
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/°C in either direction, while the voltage can be trimmed between 580-800mV.
| Original language | American English |
|---|---|
| Article number | 9888150 |
| Pages (from-to) | 192-198 |
| Number of pages | 7 |
| Journal | IEEE Open Journal of Circuits and Systems |
| Volume | 3 |
| DOIs | |
| State | Published - 1 Jan 2022 |
Keywords
- Bandgap reference
- Capacitors
- Frequency measurement
- Impedance
- Photonic band gap
- Resistors
- Switches
- Temperature measurement
- low power analog
- switched capacitor circuits
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Signal Processing
- Electronic, Optical and Magnetic Materials
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