A Low-Power CMOS Bandgap Voltage Reference for Supply Voltages Down to 0.5 V
Abstract
:1. Introduction
2. LV Bandgap Voltage Reference
2.1. MOSFET-Based Voltage Reference
2.2. Proposed BG Core
2.3. Offset and Noise Contribution of the Amplifier
3. Prototype Design
3.1. Start-Up Circuit
3.2. Device Sizing
4. Results
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Device | Type | W (m) | L (m) | m |
---|---|---|---|---|
LVT | 3 | 3 | 1 | |
LVT | 3 | 3 | 5 | |
ZVT | 3.5 | 0.35 | 4 | |
RVT | 1.8 | 0.18 | 2 | |
ZVT | 0.5 | 0.5 | 1 | |
RVT | 3 | 3 | 10 | |
RVT | 2 | 2 | 1 | |
RVT | 2 | 2 | 4 | |
RVT | 2 | 2 | 1 | |
RVT | 2 | 2 | 4 | |
RVT | 2 | 2 | 1 | |
RVT | 2 | 2 | 4 | |
RVT | 0.28 | 0.18 | 1 | |
RVT | 0.28 | 0.18 | 4 | |
RVT | 0.28 | 0.18 | 1 | |
RVT | 0.28 | 0.18 | 4 |
Device | Value | Device | Value |
---|---|---|---|
616 k | 1 pF | ||
616 k | 1 pF | ||
154 k | 1 pF | ||
1 pF | 200 fF |
This Work | [22] | [40] | [23] | [41] | [29] | [33] | [27] | |
---|---|---|---|---|---|---|---|---|
Technology (nm) | 180 | 130 | 180 | 65 | 180 | 110 | 180 | 180 |
Power (nW) | 315 | 170 | 2.6 | 38 | 14 | 5.35 | 5.4 | 19 |
(V) | 0.5 | 0.75 | 0.45 | 0.5 | 0.45 | 0.242 | 0.25 | 0.7 |
(V) | 0.233 | 0.256 | 263.5 | 0.495 | 0.118 | 0.195 | 0.091 | 0.438 |
PSRR (dB) | −44@100 Hz | N.A | −40@30 Hz | −50@DC | −40@100 Hz | N.A. | −70@100 Hz | N.A. |
Temperature range (°C) | 10–50 | −20–85 | 0–125 | −40–120 | −40–125 | N.A. | 0–120 | −25–85 |
TC (ppm/°C) | 45 | 40 | 165 | 42 | 63.6 | 134 | 265 | 22.1 |
Trimmed | NO | YES | NO | YES | YES | YES | NO | YES |
LR (mV/V) | 1.44 | 0.013 | 1.16 | 3.2 | 1.2 | 8 | 0.145 | 0.571 |
Area (mm2) | 0.015 | 0.055 | 0.043 | 0.0522 | 0.012 | 0.013 | 0.0022 | 0.041 |
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Ria, A.; Catania, A.; Bruschi, P.; Piotto, M. A Low-Power CMOS Bandgap Voltage Reference for Supply Voltages Down to 0.5 V. Electronics 2021, 10, 1901. https://doi.org/10.3390/electronics10161901
Ria A, Catania A, Bruschi P, Piotto M. A Low-Power CMOS Bandgap Voltage Reference for Supply Voltages Down to 0.5 V. Electronics. 2021; 10(16):1901. https://doi.org/10.3390/electronics10161901
Chicago/Turabian StyleRia, Andrea, Alessandro Catania, Paolo Bruschi, and Massimo Piotto. 2021. "A Low-Power CMOS Bandgap Voltage Reference for Supply Voltages Down to 0.5 V" Electronics 10, no. 16: 1901. https://doi.org/10.3390/electronics10161901