HINOJO MONTERO , José María

El escalado de los procesos de fabricación de semiconductores, predicho por el Dr. Moore en los años sesenta, ha tenido un gran impacto en el desarrollo de la electrónica integrada actual. Por una parte, la reducción del tamaño de los transistores ha permitido incrementar la densidad de integración, dando la posibilidad a los diseñadores de...

Charge carrier transport in disordered organic semiconductors, performed in electronic devices such as optoelectronic and photovoltaic ones, is usually affected by an exponential distribution of localized states in the band-gap (traps) under space-charge limited current. In this paper, we provide a full analysis for the trap-controlled...

A new compensation method for low dropout (LDO) voltage regulators is proposed, where the series resistor of the conventional Miller compensation changes with the load current to track the variations in the first non‐dominant pole.

A new frequency compensation technique for output buffers able to manage a wide range of loads, is proposed in this paper. To improve the stability, this technique implements a variable zero nulling resistor in a classical Miller compensation. A replica circuit senses the operating region of the output stage and generates the required value of...

The current and electroluminescence transient responses of standard poly phenylene vinylene -based light-emitting devices have been investigated. The electroluminescence time response is longer milliseconds scale than the current switch-off time by more than one order of magnitude, in the case of small area devices 0.1 cm2 . For large area...

The application of the flipped voltage follower to implement two high-performance circuits is presented: (1) The first is a class AB cascode flipped voltage follower that shows an improved slew rate and an improved bandwidth by very large factors and that has a higher output range than the conventional flipped voltage follower. It has a small...

A new internally compensated low drop-out voltage regulator based on the cascoded flipped voltage follower is presented in this paper. Adaptive biasing current and fast charging/discharging paths have been added to rapidly charge and discharge the parasitic capacitance of the pass transistor gate, thus improving the transient response....

An ultra-low power Internally Compensated Low- Dropout (IC-LDO) regulator with a quiescent current consumption lower than 600 nA is proposed. It is based on the classical IC-LDO topology, which has been modified to include a class AB buffer between the output of the error amplifier and the gate of the pass transistor (MPASS). This way, a fast...

In this paper, an internally compensated low dropout (LDO) voltage regulator based on the Flipped Voltage Follower (FVF) is proposed. By means of capacitive coupling and dynamic biasing, the transient response to both load and line variations is enhanced. The proposed circuit has been designed and fabricated in a standard 0.5 mm CMOS...

Reduction of minimum supply requirements is a crucial aspect to decrease the power consumption in VLSI systems. A high-performance capacitance multiplier able to operate with supplies as low as ±0.25 V is presented. It is based on adaptively biased class-AB current mirrors which provide high current efficiency. Measurement results of a factor...

This paper presents the design of a safety system based on controlled electromagnetic field (CEMF) sensing technology to prevent accidents caused by power tools, especially related to handheld circular saws. The safety system creates an invisible protection bubble of electromagnetic field around the cutting edge. The system can provide early...

Low power and low voltage are key in modern design. The quasi-floating gate (QFG) has proven to be an adequate choice in numerous applications. However, so far, its use has not spread in high-radiation environments because of the lack of studies on the performance of this technique under radiation. This work addresses the effect of ionizing...

Depleted Monolithic Active Pixel Sensors (DMAPSs) are foreseen as an interesting choice for future high-energy physics experiments, mainly because of the reduced fabrication costs. However, they generally offer limited time resolution due to the stringent requirements of area and power consumption imposed by the targeted spatial resolution....

Perimeter detection systems detect intruders penetrating protected areas, but modern solutions require the combination of smart detectors, information networks and controlling software to reduce false alarms and extend detection range. The current solutions available to secure a perimeter (infrared and motion sensors, fiber optics, cameras,...

The front-end readout channel consists of a charge sensitive amplifier (CSA) and two different unipolar-shaping circuits to generate pulses suitable for time and energy measurement. The signal processing chain of the single channel is built of two different parallel processing paths: a fast path with a peaking time of 30 ns to obtain the time...