0.7 V Supply Self-Biased NanoWatt MOS-Only Threshold Voltage Monitor Oscar Mattia , H. Klimach, S. Bampi and M. Schneider 1 ISCAS2015 – 0.7 V Supply Self-Biased NanoWatt MOS-Only Threshold Voltage Monitor Electrical and Electronics Engineering Department Federal University of Santa Catarina Florianopolis, Brazil ETRO / mmWave group VUB / imec Leuven, Belgium Electrical Engineering Dep. Informatics Institute Federal University of Rio Grande do Sul Porto Alegre, Brazil
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0.7 V Supply Self-Biased NanoWatt MOS-Only Threshold Voltage Monitor Oscar Mattia, H. Klimach, S. Bampi and M. Schneider 1 ISCAS2015 – 0.7 V Supply Self-Biased.
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0.7 V Supply Self-Biased NanoWatt MOS-Only Threshold
Voltage Monitor
Oscar Mattia, H. Klimach, S. Bampi and M. Schneider
ISCAS2015 – 0.7 V Supply Self-Biased NanoWatt MOS-Only Threshold Voltage Monitor
Electrical and Electronics Engineering Department
Federal University of Santa Catarina
Florianopolis, Brazil
ETRO / mmWave group
VUB / imecLeuven, Belgium
Electrical Engineering Dep.
Informatics InstituteFederal University of Rio
Grande do SulPorto Alegre, Brazil
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On this presentation
ISCAS2015 – 0.7 V Supply Self-Biased NanoWatt MOS-Only Threshold Voltage Monitor
This work introduces a threshold voltage
monitor circuit, and a process
independent design methodology. Features:
nanoWatt power
sub-1V power supply
self-biased and MOS-only
Applications:
bias circuits
voltage references
process
monitor/comp
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Threshold Monitor Definition
“Ideally, a threshold voltage monitor is a
circuit that delivers the estimated VT0
value as a voltage directly from its
operational conditions”
without parametric setups
without curve fitting
without subsequent calculationsISCAS2015 – 0.7 V Supply Self-Biased NanoWatt MOS-Only Threshold Voltage Monitor
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Outline
1. Background – MOSFET Model
2. Circuit Description
3. Design Methodology
4. Results
5. Conclusion
ISCAS2015 – 0.7 V Supply Self-Biased NanoWatt MOS-Only Threshold Voltage Monitor
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𝟏 . 𝐼𝐷=𝐼 𝐹− 𝐼𝑅=𝑆 𝐼𝑆𝑄 (𝑖𝑓 −𝑖𝑟 )
𝟐 .𝑉 𝐺−𝑉 𝑇 0−𝑛𝑉 𝑆 (𝐷)
𝑛∅ 𝑡
=𝐹 (𝑖 𝑓 ( 𝑟 ) )
VT0 is defined by the equality between the drift and diffusion components of the drain current.