8.4 A 2.5ps 0.8-to-3.2GHz bang-bang phase- and frequency-detector-based all-digital PLL with noise self-adjustment
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Future digital signal processing (DSP) systems must provide robustness on algorithm and application level to the presence of reliability issues that come along with corresponding implementations in modern semiconductor process technologies. In this paper, ...
In ultra-low-power (ULP) applications, the supply voltage is generally reduced well below threshold voltage of MOS devices in order to limit dissipation and to control the device leakage current due to the subthreshold channel residual current. However, re ...
Institute of Electrical and Electronics Engineers2011
This article discusses system-level techniques to optimize the power-performance trade-off in subthreshold circuits and presents a uniform platform for implementing ultra-low power power-scalable analog and digital integrated circuits. The proposed techniq ...
In this paper, a 4.6 GHz frequency synthesizer integrated circuit for Cesium-based miniature atomic clocks is presented. Based on a fractional-N phase-locked loop (PLL) with sigma-delta modulator, the chip features a frequency resolution below 10E-3 Hz at ...
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011
This paper discusses techniques, limitations and possible future developments of circuits based on transistors operated in the weak inversion (w.i.) mode, also called subthreshold mode. In analog circuits, w.i. is reached at very low current, but it is als ...
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009
With the continuous shrinking of devices dimensions in microelectronic circuits, it is becoming extremely desirable to integrate analog circuitry together with complex digital logic blocks. The noise generated by the digital parts in a mixed-signal integra ...
A VCO topology with a high gm at RF and low gm at low frequencies (LF) is presented. A high gm(RF) improves start-up conditions, and a low gm(LF) enables a significant improvement of the phase noise and the power supply rejection. The VCO with a modified p ...
We present a fully integrated detector suitable for active tracking of interventional devices in MR-guided interventions. The single-chip microsystem consists of a detection coil, a tuning capacitor, an intermediate frequency downconversion receiver, and a ...
A novel charge pulse detection circuit is presented, consisting of a continuous reset resistor in series with the charge pulse generator, followed by a simple amplifier and pulse shaping circuit. Realization with a 0.18 μm CMOS process (UMC) will result in ...
A novel frequency synthesizer with a strong emphasis on low-power consumption (2mW) was developed for this thesis. A BAW-resonator was used for the design of the high-frequency oscillator. The BAW's high Q-Factor ensured a minimal power consumption, while ...
