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US20140368180 REFERENCE VOLTAGE GENERATOR AND VOLTAGE GENERATING SYSTEM HAVING THE SAME  
A reference voltage generator includes a constant voltage generator suitable for using a high voltage as a first power supply voltage and for generating a constant voltage, and a first reference...
US20120161745 POWER SUPPLY DETECTION CIRCUIT  
Power supply detection circuit. The power supply detection circuit includes an input circuit responsive to a core power supply voltage to generate a first output voltage at a first node. The power...
US20150001938 REGULATOR FOR INTEGRATED CIRCUIT  
An electronic circuit includes a functional circuit in series with at least one first current source between two terminals of application of a power supply voltage. The first current source is...
US20130187629 Dynamic Biasing of an Amplifier Using Capacitive Driving of Internal Bias Voltages  
A system and a method are disclosed for using driving capacitors to dynamically bias an amplifier in a stage of a pipeline analog-to-digital converter (ADC). The drain of the amplifier is...
US20140253088 FIXED VOLTAGE GENERATING CIRCUIT  
A fixed voltage generating circuit includes a current mirror, a differential pair, and a resistor coupled to the current mirror. A node of the resistor is coupled to a voltage source. The...
US20130099771 LOW VOLTAGE DETECTION CIRCUIT  
Disclosed is a low voltage detection circuit. The low voltage detection circuit includes, a voltage comparison circuit, an output stage, an electric current circuit, and a judgment circuit. When...
US20150177772 ELECTRONIC CIRCUIT WITH SELF-CALIBRATED PTAT CURRENT REFERENCE AND METHOD FOR ACTUATING THE SAME  
The electronic circuit with a self-calibrated PTAT current reference includes a PTAT current generator dependent on at least one integrated resistor for supplying a PTAT output current. It further...
US20110127989 CONSTANT CURRENT CIRCUIT  
Provided is a constant current circuit capable of low current consumption operation, which is prevented from repeating a start-up state and a zero steady state and entering an oscillating state...
US20130002361 VCO INSENSITIVE TO POWER SUPPLY RIPPLE  
A ring oscillator that is more insensitive to power supply ripple utilizes an amplifier circuit having a first input coupled to a reference voltage. A current is generated that represents a...
US20130106394 CONSTANT CURRENT CIRCUIT AND VOLTAGE REFERENCE CIRCUIT  
Provided is a constant current circuit in which an enhancement N-channel transistor can operate in a weak-inversion state even at high temperatures. A constant current circuit includes a current...
US20140225531 AVERAGE CURRENT CONTROL FOR A SWITCHED POWER CONVERTER  
A circuit for controlling a switch in a power converter in which peak current is regulated to achieve a specified average current through a load. The circuit can include a first input to receive a...
US20130321068 CIRCUIT FOR GENERATION OF AN ELECTRIC CURRENT WITH A CONFIGURABLE VALUE  
A current-generator circuit is for generation of an output current of a value that is configurable as a function of a configuration signal. The circuit may have a first reference resistor element...
US20090039862 Voltage transformation circuit  
A voltage transformation circuit comprising a first input, a second input, a first output, first and second impedances and a current mirror having master and slave terminals, wherein the first...
US20120139524 CONSTANT CURRENT CIRCUIT  
According to one embodiment, a constant current circuit, including A constant current circuit, a current mirror circuit generating an output current, an external terminal to which an external...
US20110050198 LOW-POWER VOLTAGE REGULATOR  
A technique for reducing power dissipation and circuit area for a high voltage application includes creating a low-voltage, local power supply for use with local circuitry. In at least one...
US20100253315 POWER LEVEL INDICATOR  
An electronic device is provided that is adapted to generate a supply voltage at an input node from a radio frequency (RF) signal. The electronic device includes a limiter coupled to the input...
US20140340069 CURRENT GENERATOR CIRCUIT AND METHODS FOR PROVIDING AN OUTPUT CURRENT  
Current circuits, circuits configured to provide a bias voltage, and methods for providing a bias voltage are described, including a current circuit configured to receive a reference current and...
US20130278239 PRECHARGE CIRCUITS AND METHODS FOR DC-DC BOOST CONVERTERS  
The present invention discloses precharge circuits and methods for DC-DC boost converters. In one embodiment, a precharge method for a DC-DC boost converter having a current mirror circuit that...
US20080284405 Enhanced Cascode Performance By Reduced Impact Ionization  
The conventional cascode circuit can be improved by adding another transistor in series. The added transistor may use the body effect to reduce supply voltage variations across the cascode...
US20140117969 CONSTANT CURRENT SOURCE CIRCUIT  
A current source includes a first MOS transistor of a first channel type including a drain connected to an output terminal, and a source directly connected to a first power supply, a second MOS...
US20130320956 LEVEL SHIFTER CIRCUIT AND GATE DRIVER CIRCUIT INCLUDING THE SAME  
There are provided a level shifter circuit and a gate driver circuit including the same. The level shifter circuit includes: a plurality of switching devices connected to a predetermined DC power...
US20130009623 FOUR-QUADRANT BOOTSTRAPPED SWITCH CIRCUIT  
A bootstrapped switch circuit includes a first switch transistor to receive an input signal and a second switch transistor to provide an output signal. The sources of the switch transistors may be...
US20100066344 Soft-start circuit  
The present invention discloses a soft-start circuit having a reference signal generator, a first current generator, a second current generator, and a soft-start capacitor. The reference signal...
US20150145588 BI-DIRECTIONAL CURRENT SENSOR  
A bidirectional current sensor circuit can be configured to generate a scaled version of a load current using a first transistor from a power regulator output stage and a second transistor that...
US20140145702 CONSTANT CURRENT GENERATING CIRCUIT USING ON-CHIP CALIBRATED RESISTOR AND RELATED METHOD THEREOF  
A constant current generating circuit and constant current generating method applied to a chip are provided, where the chip includes a first current generating circuit and a second current...
US20070164722 Low power beta multiplier start-up circuit and method  
A circuit (200) can include a reference circuit (202) and a start-up circuit (204). A start-up circuit (204) can include a low threshold voltage reference current device (N3) that can pull a start...
US20090267585 CASCODE CURRENT MIRROR CIRCUIT, BANDGAP CIRCUIT, REFERENCE VOLTAGE CIRCUIT HAVING THE CASCODE CURRENT MIRROR CIRCUIT AND THE BANDGAP CIRCUIT, AND VOLTAGE STABILIZING/REGULATING CIRCUIT HAVING THE REFERENCE VOLTAGE CIRCUIT  
A cascode current mirror circuit and a bandgap circuit are provided. The circuits are used together and function as a reference voltage circuit. The reference voltage circuit outputs a reference...
US20110187344 CURRENT-MODE PROGRAMMABLE REFERENCE CIRCUITS AND METHODS THEREFOR  
A circuit includes a first current path comprising a first floating-gate transistor having a programmable threshold voltage, a second current path, and a differential amplifier. The second current...
US20080018320 Current Balance Arrangment  
A current mirror arrangement comprising two transistors (11, 12) which are of different conductivity types and are each suitable for outputting a bias current (PBIAS, NBIAS) is specified. A...
US20150253799 TEMPERATURE INSENSITIVE TRANSIENT CURRENT SOURCE  
A current source includes a first current path including a first current mirror transistor and an input current source coupled in series, a second current path including a second current minor...
US20140247035 NOISE CANCELING CURRENT MIRROR CIRCUIT FOR IMPROVED PSR  
A current mirror circuit provides a current to drive a load. A noise cancelling circuit is provided to keep the load current constant in spite of variations in the supply voltage. The noise...
US20130057351 Current-Voltage Converter Having a Current Reflector, Input Stage of an Amplifier and Corresponding Amplifier  
This current-voltage converter(22) with a current reflector, the input current including a fixed component and a variable component, includes: an input (24) for the current to be converted;an...
US20110193544 CIRCUITS AND METHODS OF PRODUCING A REFERENCE CURRENT OR VOLTAGE  
A reference circuit includes a first transistor having a first current electrode, a control electrode, and a second current electrode coupled to a power supply terminal. The reference circuit...
US20110095745 POWER SUPPLY CIRCUIT  
A power supply circuit includes an output driver transistor, a buffer circuit, and an error amplification circuit. The buffer circuit includes a first transistor connected to an output terminal...
US20090195236 SEMICONDUCTOR CIRCUITS CAPABLE OF MITIGATING UNWANTED EFFECTS CAUSED BY INPUT SIGNAL VARIATIONS  
Semiconductor circuit capable of mitigating unwanted effects caused by variations in a received input signal are provided, in which a main circuit receives an input signal and comprises a first...
US20100289475 LOW DROPOUT REGULATOR COMPENSATION CIRCUIT USING A LOAD CURRENT TRACKING ZERO CIRCUIT  
Disclosed is a low dropout regulator that uses a load current tracking zero circuit to stabilize a feedback loop to prevent oscillations. The load current tracking zero circuit senses the DC...
US20140009139 DIFFERENTIAL CURRENT SOURCE AND DIFFERENTIAL CURRENT MIRROR CIRCUIT  
A differential current source includes two source transistors, sources of which are respectively connected to a power source, and a mixer circuit having a first terminal, a second terminal, a...
US20080106247 Trimmed current mirror  
A circuit is used for providing an output current that is proportional to an applied input current with high accuracy. The circuit includes an input circuit, a trimmable coupling circuit and an...
US20150160679 SYSTEM AND METHOD FOR GENERATING CASCODE CURRENT SOURCE BIAS VOLTAGE  
A circuit includes: a cascode current source comprising: a current mirror transistor; and a cascode transistor; and a bias circuit coupled to the cascode current source, the bias circuit...
US20130127438 PHOTOCOUPLER OUTPUT SIGNAL RECEIVING CIRCUIT  
In aspects of the invention, a photocoupler output signal receiving circuit includes a first constant current circuit, connected between an input terminal and the high potential side of a direct...
US20090160420 DIFFERENTIAL CURRENT MIRROR CIRCUIT  
A differential current mirror circuit includes: a first branching unit that branches current through a first current input terminal to a first current path and a second current path; a second...
US20070069712 Driving circuit and electronic device using the same  
A driving circuit is disclosed that has low power consumption and supplies a current to a load. The driving circuit includes a constant current circuit section to generate and output a...
US20130106395 System and Method for Providing a Low-Power Self-Adjusting Reference Current for Floating Supply Stages  
A system and method for providing an accurate current reference using a low-power current source is disclosed. A preferred embodiment comprises a system comprises a first section and a second...
US20120044023 Apparatus and Method for a Smooth Powerup of a Reference Signal  
A circuit for providing a reference voltage can be widely used in audio applications. However, at startup an abrupt start in the reference signal can cause undesirable audible artifacts. A circuit...
US20100283448 REFERENCE CIRCUIT WITH REDUCED CURRENT STARTUP  
An apparatus is provided. The apparatus comprises a reference circuit and a startup circuit. The reference circuit is adapted to provide a startup current, while the startup circuit receives the...
US20090009152 BIAS SUPPLY, START-UP CIRCUIT, AND START-UP METHOD FOR BIAS CIRCUIT  
A bias supply, a start-up circuit, and a start-up method for a bias circuit are provided. The bias supply includes the bias circuit, a first switch, a second switch, and a charge storage unit. The...
US20070063687 Circuit and method for bias voltage generation  
A bias voltage generation circuit is provided which includes a voltage-to-current translation circuit configured to generate a first current that is positively related to a first voltage. A...
US20120313712 APPARATUS AND METHOD FOR A SMOOTH POWERUP OF A REFERENCE SIGNAL  
A circuit for providing a reference voltage can be widely used in audio applications. However, at startup an abrupt start in the reference signal can cause undesirable audible artifacts. A circuit...
US20090045794 Stabilizing methods for current source  
A stabilizing method for a current source is provided. The current source is provided a current which increases when temperature rises. An adjustment circuit provides an input current increasing...
US20090189591 Power Supply Insensitive PTAT Voltage Generator  
In temperature sensing circuitry PTAT (Proportional to Absolute Temperature) Voltage References are typically used. By adding a feedback circuit and a source follower into the classic design, the...

Matches 1 - 50 out of 134 1 2 3 >