Analysis and Design of Analog Integrated Circuits
Analysis and Design of Analog Integrated Circuits
A reconfigurable voltage reference without resistors
KES'10 Proceedings of the 14th international conference on Knowledge-based and intelligent information and engineering systems: Part IV
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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 驴20°C to 80°C range, the programmable output voltage V REF exhibits a worst case precision of 卤3%.