A programmable voltage reference optimized for power management applications

A 3-bits programmable, low drift, high PSRR and high precision voltage reference, optimized for Power Management (PM) applications, is presented. The topology is based on a high-performance bandgap voltage reference that presents a PSRR of up to 80 dB, which is required in PM applications, because t...

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Bibliographic Details
Published in:Analog integrated circuits and signal processing 2008-11, Vol.57 (1-2), p.3-9
Main Authors: Ramos, Filipe Guimarães Russo, Ferreira, Luís Henrique Carvalho, Pimenta, Tales Cleber
Format: Article
Language:English
Subjects:
Circuits
Circuits and Systems
CMOS
Electric potential
Electrical Engineering
Engineering
High frequencies
Management
Noise levels
Power management
Signal,Image and Speech Processing
Voltage
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Summary:A 3-bits programmable, low drift, high PSRR and high precision voltage reference, optimized for Power Management (PM) applications, is presented. The topology is based on a high-performance bandgap voltage reference that presents a PSRR of up to 80 dB, which is required in PM applications, because they employ mixed-signal circuits, where high frequency switching noise is present. The proposed approach was successfully verified in a standard 0.35 μm CMOS process. The experimental results confirmed that, for power supply between 3.0 and 3.3 V, and temperatures in −20°C to 80°C range, the programmable output voltage V REF exhibits a worst case precision of ±3%.
ISSN:0925-1030
1573-1979
DOI:10.1007/s10470-008-9208-3