Free class‐AB flipped voltage follower using bulk‐driven technique
2015; Institution of Engineering and Technology; Volume: 51; Issue: 18 Linguagem: Inglês
10.1049/el.2015.0768
ISSN1350-911X
AutoresJesús E. Molinar-Solís, Marco A. Gurrola-Navarro, Ivan Padilla-Cantoya, Juan J. Ocampo‐Hidalgo, C. Muñiz,
Tópico(s)Advancements in Semiconductor Devices and Circuit Design
ResumoA new configuration of the flipped voltage follower (FVF) offering class-AB operation is presented. The idea uses a bulk-driven transistor instead of the constant current source of the typical FVF topology. This feature enhances the sourcing capability for class-AB operation and the symmetrical slew rate. The key element is changing the basic structure of the original FVF circuit with no additional devices. A detailed analysis of the circuit and simulations using Spice are presented. The experimental results from a manufactured circuit prototype using CMOS 0.35 μm technology demonstrate the feasibility of the proposal.
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