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This paper describes and compares some of the most energy and area efficient self-calibration techniques reported over the past years. Additional techniques used to further improve power dissipation are briefly described as well. A robust mixed-signal self-calibration technique is proposed, in which, the multi-bit first stage in the ADC is calibrated without requiring any modifications, as long as...
SAR ADCs have been mostly used for moderate-speed, moderate-resolution applications that power consumption is one of the major concerns (e. g. RFID). Furthermore two-step ADCs are classified as high-speed, low to moderate-accuracy ADC. In this paper an ultra low power two-step-SAR ADC for RFID application is presented. Several techniques are used to further reduce the power consumption and relatively...
A 10-bit successive approximation analog-to-digital converter (ADC), with offset correction circuitry and a tunable series attenuation capacitor is presented for implantable biosensor applications. The ADC is designed in a standard 0.13 ??m CMOS process technology and can operate with supply voltages down to 0.6 V. The ADC uses MOSFETs that are designed to operate in the sub-threshold region of operation...
We describe here the design and electrical model of a resistive-capacitive voltage divider for very wide bandwidth high voltage measurements. The divider smoothly transitions from a resistive topology at low frequencies to a capacitive topology at high frequencies, giving it a very flat attenuation curve from DC to a 3dB point at 1.0 GHz. The design is novel, employing a combination of distributed...
For applications which require high peak current and fast rise time, silicon carbide (SiC) material is ideal due to its ability to tolerate high localized temperatures generated during switching. This research was performed to investigate SiC devices for pulse power applications and to analyze the failure of the devices. Seven 2 mm times 2 mm SiC gate turn-off thyristors (GTOs) manufactured by Cree...
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