Analog-to-Digital Converter with energy recovery capability using adiabatic technique
- Resource Type
- Conference
- Authors
- Tang, Howard; Siek, Liter
- Source
- 2010 IEEE Asia Pacific Conference on Circuits and Systems Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on. :780-783 Dec, 2010
- Subject
- Signal Processing and Analysis
Power, Energy and Industry Applications
Robotics and Control Systems
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Switches
Discharges
CMOS integrated circuits
Power supplies
Capacitors
Switching circuits
Radiation detectors
ADC
analog-to-digital converter
adiabatic switching
charge redistribution
charge recovery
dynamic power
DAC
digital-to-analog converter
implantable medical electronics
low power
resonant power supply
successive approximation
wireless sensors
- Language
This paper presents the design methodology to recover charges in Analog-to-Digital Converter using adiabatic technique. Charge redistribution Successive Approximation Register (SAR) ADC is used as the main ADC architecture. The proposed ADC can operate in two modes - fast switching mode and adiabatic mode. In the fast switching mode, conventional DC supply is used and the ADC performs normal SAR ADC operation. In the adiabatic mode, resonant power supply is required and charges in the charge-redistribution DAC can be recovered through an adiabatic switch. The adiabatic switch is simulated using CSM 0.18µm CMOS technology. Simulation results show that the resonant power supply can recover 70% of the charges in the charge-redistribution DAC at a rate of 100kS/s with a 2V supply voltage.