Azcona Murillo, Cristina, Calvo Lopez, Belén, Pueyo, Santiago Celma
2013, XVIII, 139 p. 95 illus., 42 illus. in color.
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Covers complete design flow of the main blocks used in voltage-to-frequency converter circuits (voltage-to-current converters, bidirectional current integrators, control circuits and bias circuits)
Describes implementation of all circuits in CMOS technology, considering low-voltage low-power restrictions
Includes novel blocks and techniques to achieve a rail-to-rail operation in the voltage-to-current converters, and therefore in the VFC
This book develops voltage-to-frequency converter (VFC) solutions integrated in standard CMOS technology to be used as a part of a microcontroller-based, multisensor interface in the environment of portable applications, particularly within a WSN node. Coverage includes the total design flow of monolithic VFCs, according to the target application, as well as the analysis, design and implementation of the main VFC blocks, revealing the main challenges and solutions encountered during the design of such high performance cells. Four complete VFCs, each temperature compensated, are fully designed and evaluated: a programmable VFC that includes an offset frequency and a sleep/mode enable terminal; a low power rail-to-rail VFC; and two rail-to-rail differential VFCs.
Content Level »Research
Keywords »Analog Circuits and Signal Processing - Bidirectional Current Integrators - CMOS Rail-to-Rail VFC - CMOS VFC - Differential VFCs - VFCs - Voltage Frequency Converters - Voltage-to-Current Converters