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Class 327/103 - Converting input voltage to output current or vice versa


Subclass of Class 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
Definition: Subject matter wherein electrical potential is changed to
No. of patents: 405
Last issue date: 05/08/2012


1                      
NumberTitleIssue Date
8174292Current sensing circuit for PWM applications with pulse width modulation and corresponding current process
A current sensing circuit for a pulse width modulation (PWM) application may include first and second input terminals to be coupled to ends of a sensing resistance, an output terminal, and first and second internal circuit nodes. The current sensing circuit further ...
05/08/2012
8149021Current detection circuit and voltage converter using the current detection circuit
A first auxiliary switch circuit is connected to one terminal and a first terminal of a main switch circuit and generates a first auxiliary detection current. A second auxiliary switch circuit is connected to the other terminal and a second terminal of the main swit...
04/03/2012
8143923Circuit and method for determining a current
A power supply circuit having a converter circuit and method for determining a current flowing into the converter circuit. A converter circuit includes an amplifier and a current-to-current converter module. The amplifier has a current sensing element coupled betwee...
03/27/2012
8072245dB-linear voltage-to-current converter
A dB-linear voltage-to-current (V/I) converter that is amenable to implementation in CMOS technology. In a representative embodiment, the dB-linear V/I converter has a voltage scaler, a current multiplier, and an exponential current converter serially connected to o...
12/06/2011
8058909Transconductance amplifier
The present invention is intended to achieve a transconductance amplifier and a voltage/current converting method which can provide a sufficient amplitude and a high degree of design freedom. The method comprises the steps of converting a first voltage signal to a f...
11/15/2011
8035422Transconductance amplifier with a filter for rejecting noise outside the useful band
The invention relates to a transconductance amplifier, providing current variations di=k·dv when it receives voltage variations dv. The amplifier comprises a first MOS transistor (MN4) whose drain provides differential currents (I−di, I+di). It comp...
10/11/2011
8013639MOS integrated circuit and electronic equipment including the same
A MOS integrated circuit includes: a voltage-to-current conversion circuit configured to convert first and second voltages to a first current having a current value corresponding to the first voltage and a second current having a current value corresponding to the s...
09/06/2011
7982506Voltage-current converter and filter circuit using same
The voltage-current converter of the present invention includes a converter input terminal, a converter output terminal, a voltage-current conversion unit for converting voltage that is applied as input to the converter input terminal to current, and a current extra...
07/19/2011
7944249Photoreceiving circuit
A buffer circuit includes a first transistor (T1) having a base connected to a first power supply, the emitter (E1) and collector (C1) connected as input and output nodes, a second transistor (T2) having a base connected to the first powe...
05/17/2011
7915928High linearity voltage to current conversion
A system and method for performing voltage to current conversion, the system comprising of a first set of devices that senses the input voltage signal through its input terminal and replicates said input voltage across a second set of devices which then converts sai...
03/29/2011
7906993High linearity voltage-current converter able to compensate for mobility degradation
A high linearity voltage-current converter able to compensate for mobility degradation comprises a first constant current source circuit, a first current mirror unit, a second constant current source circuit, a second current mirror unit, a seventh MOS transistor an...
03/15/2011
7893728Voltage-current converter and voltage controlled oscillator
An exemplary aspect of an embodiment of the present invention is a voltage-current converter converting an input voltage input to an input terminal to a current to output the current, the voltage-current converter including a first current generating circuit includi...
02/22/2011
7893729Voltage/current conversion circuit
Provided is voltage/current conversion circuit including: first and second capacitors; first and second resistors each connected to input terminal; first and second current sources; third and fourth resistors connected to current sources; differential amplifier for ...
02/22/2011
7880511MOS integrated circuit and electronic equipment including the same
A MOS integrated circuit includes: a voltage-to-current conversion circuit configured to convert first and second voltages to a first current having a current value corresponding to the first voltage and a second current having a current value corresponding to the s...
02/01/2011
7863945Current converting method, transconductance amplifier and filter circuit using the same
The present invention is intended to achieve a transconductance amplifier and a voltage/current converting method which can provide a sufficient amplitude and a high degree of design freedom. The method comprises the steps of converting a first voltage signal to a f...
01/04/2011
7746120Voltage to current converter
A signal receiving device includes: a first conversion unit comprising a first input terminal to which a signal including a voltage signal and a reference voltage is inputted, and a first output terminal which output a first current signal voltage-current converted ...
06/29/2010
7737733Current-voltage conversion circuit
A current-voltage conversion circuit which converts a current to be detected into a voltage, includes a detection resistor, amplifier circuit having a first operational amplifier, and an offset adjusting current source having a third resistor and a fourth resistor w...
06/15/2010
7710165Voltage-to-current converter
A Voltage-to-Current converter includes a current mirror having first and second poles, a first transistor coupled between the first pole of the current mirror and a low voltage through a first resistor, a second transistor coupled between the second pole of the cur...
05/04/2010
7663410Current-mode differential transmitter and receiver
A current-mode differential transmitter, receiving a single-end input voltage signal and accordingly generating a differential output current signal, is provided. The transmitter includes a first switch, a second switch and a current mirror. The first switch is coup...
02/16/2010
7663409Voltage/current converter circuit and method for providing a ramp current
A voltage/current converter circuit includes a bridge configuration having a first current path with a first resistor, a first transistor, and an input node to receive a ramp voltage to be converted, and a second current path with a second resistor and a second tran...
02/16/2010
7652509Differential input and output transconductance circuit
The present invention relates to a transconductance circuit intended to convert a differential input voltage, supplied as two signals to two inputs, IN+ and IN− respectively, into a differential output current. According to the invention, each of the two signals o...
01/26/2010
7642816Transconductor
A transconductor to convert an input voltage to an output current, includes: a primary transconductance stage to provide the output current from the input voltage and a driving current; an adaptive transconductance stage coupled in series with the primary transcondu...
01/05/2010
7602220Resistor-input transconductor including common-mode compensation
A resistor-input transconductor includes a circuit configured to generate a common-mode compensation current. The common-mode compensation current is used to compensate for the common-mode voltage of the inputs. A current output of the resistor-input transconductor ...
10/13/2009
7548096Current to voltage converter and current to voltage conversion method
A current to voltage converter that includes a first voltage generator to generate a first voltage according to an input current. a reference voltage generator to output a first reference voltage which is higher than the first voltage, a second voltage generator to ...
06/16/2009
7538585Transconductor
Disclosed is a transconductor including: first and second transistors each having first and second gates, the first and second gates being independently controlled, differential voltage input being supplied between the one first gate and the other first gate, the on...
05/26/2009
7532045Low-complexity active transconductance circuit
An active transconductance is provided by converting an input voltage into a current, and providing the current to a node which is maintained at a generally fixed voltage. Current is mirrored from the fixed voltage node to an output node. Such an active transconduct...
05/12/2009
7508241Data transfer method, data transfer circuit, output circuit, input circuit, semiconductor device, and electronic apparatus
A data transfer circuit comprises a voltage/current converter circuit for converting a first binary voltage data of n bits (n is an integer equal to or larger than two) to multi-value current data of 2n values which is output to a single data transfer lin...
03/24/2009
7474130Compensation of voltage-to-current converter
A voltage-to-current converter providing an output current with compensation for process-voltage-temperature (PVT) variations of a component in the voltage-to-current converter. The voltage-to-current converter includes a first voltage-to-current converter branch, a...
01/06/2009
7436222Circuit and method for trimming integrated circuits
A programmable after-package, on-chip reference voltage trim circuit for an integrated circuit having a plurality of programmable trim cells generating a programmed sequence. A converter is provided to convert the bit sequence into a trim current. The trim current i...
10/14/2008
7436165Device for measuring very short current pulses
An apparatus adapted to measure of current pulses that are very brief (a few nanoseconds) and of very low amplitude (a few microamps), such as those that can emanate from a photodetector used for the optical transmission of data at very high speed, or from a photode...
10/14/2008
7430235Apparatus for providing a multi-mode interface between a baseband receiver and radio frequency circuitry
An apparatus for providing a multi-mode interface between a baseband receiver and radio frequency (RF) circuitry. According to a preferred embodiment of the invention, the apparatus includes a first differential-to-single-ended converter, a second differential-to-si...
09/30/2008
7418250Quadrature mixer circuits and mobile terminal using the same
Because there are different voltages at two current output terminals of a current divider, the voltages at the current input terminals of two current switch circuits are not affected mutually even with a large amplitude of local signals. Accordingly, the performance...
08/26/2008
7417439Impedance conversion circuit and integrated circuit including thereof
An impedance conversion circuit including: a first voltage-to-current converter and a second voltage-to-current converter supplied with differential input signal voltages; an inverting amplifier; and a third voltage-to-current converter for feedback; wherein a first...
08/26/2008
7417486Voltage-current conversion circuit, amplifier, mixer circuit, and mobile appliance using the circuit
A cross-coupled low-distortion voltage-current conversion circuit has transistors T1 to T6. At least one of the transistors has parallel connections of two or more transistors. By arbitrarily setting the number of parallel connections of the transistor...
08/26/2008
7414434Input circuit
An input circuit is provided that can identify three states of an external signal without complicated voltage adjustment and that can reduce the power consumption in a standby state. The input circuit includes: four resistor elements serially provided between differ...
08/19/2008
7406339On-chip detection circuit off-chip mechanical switch's open and close actions
An on-chip detection circuit automatically detects when an external switch has been activated. When the device is initialized, the detection circuit measures the operating current and coverts the information into an analog voltage. The analog voltage is then process...
07/29/2008
7403063Apparatus and method for tuning center frequency of a filter
A tuning method and a tuning apparatus for tuning a filter are disclosed. The tuning method includes: configuring the filter as a VCO; utilizing the VCO to generate an oscillation signal according to a driving signal; comparing a frequency of the oscillation signal ...
07/22/2008
7391169System and method for analog voltage processing in wide range for cold-cathode fluorescent lamp
System and method for processing analog voltage for cold-cathode fluorescent lamp. The system includes a voltage-to-current converter configured to receive an input analog voltage signal and generate a first current signal, and a current processing component configu...
06/24/2008
7388387Method and apparatus for measurement of electrical resistance
An electronic circuit and method to determine a resistance value of a resistive element. The circuit includes a current source coupled in series with the resistive element. The current source is configured to force a predetermined value of current through the resist...
06/17/2008
7368991System and method for clamping a differential amplifier
System and method for limiting an output signal of a differential amplifier. A preferred embodiment comprises a limit sense amplifier configured to detect when the output exceeds a permitted limit, a common mode bias current unit configured to increase a signal gain...
05/06/2008
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