Fridolin Michel

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An ultra-low voltage switched-capacitor (SC) ΔΣ converter running at a record low supply voltage of only 250 mV is introduced. System level aspects are discussed and special circuit techniques described, that enable robust operation at such a low supply voltage. Using a SC biasing approach, inverter-based integrators are realized with(More)
1.1 A 160μA Biopotential Acquisition ASIC with Fully Integrated IA and Motion-Artifact Suppression .. 2 1.2 On-Chip Gain Reconfigurable 1.2V 24μW Chopping Instrumentation Amplifier with Automatic Resistor Matching in 0.13μm CMOS ...................................................................................................... 5 1.3 A Capacitively(More)
The design challenges of an ultra low voltage ΔΣ modulator are discussed, which encompasses a switched capacitor technique for efficient biasing of inverter-based integrators, an ultra low voltage comparator as well as efficient on-chip bias current generation and clock boosting for fast switching transients. All building blocks run at a(More)
One of the most continuous trends in solid-state circuits is the decrease in power supply as a direct consequence of technology scaling. The fact that V<inf>t</inf> does not scale linearly with supply voltage has encouraged several low-voltage design techniques recently [1&#x2013;6]. The received voltage level in a wireless power transfer system decays(More)
A voltage regulator is introduced that exhibits large signal (25 dBm) power supply rejection (PSR) up to 1GHz to comply with current electromagnetic compatibility (EMC) standards [1]. Negative peak cut-off using a rectifying diode is demonstrated so that line disturbances of several volts can be tolerated while still maintaining positive drop-out voltage.(More)
Motivated by low-voltage, low-power and small-size requirements of biomedical and energy scavenging circuits, this work introduces a fully integrated instrumentation amplifier (IA) running at 1.2V with a power consumption of only 24&#x03BC;W. A direct current feedback structure (DCFB) with rail-to-rail output swing is proposed along with a precision(More)
Differential input structures and their immunity to electromagnetic interference (EMI) are discussed and measured. EMI signals coupling into analog circuits can have levels of up to 40 V<inf>pp</inf> according to recent industrial EMI specifications [6]. In order to maintain circuit operation under such high disturbances several on chip modifications of(More)
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