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5952875 |
Circuit with hot electron protection and method
An I/O circuit whose output receives a voltage V PAD which is temporarily higher than a critical voltage V DS MAX >V DS 1 across drain and source of a conducting first N-FET (110, N1) acting...
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5949278 |
Reference current generator in CMOS technology
In this generator a first current mirror (MP1, MP2) forms two circuit branches to be connected between supply terminals (V DD , V SS ). Each of the branches includes transistors (MP1, MN1; MP2,...
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5945869 |
Voltage detector using body effect
A circuit is designed with a first reference circuit (202) for producing a first reference voltage in response to a first voltage. A second reference circuit (204) produces a second reference...
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5945874 |
Circuit configuration for smoothing a voltage
A circuit configuration for smoothing an input voltage includes two input terminals for receiving the input voltage. A negative-feedback amplifier has two inputs and an output. A capacitor is...
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5945871 |
Process for temperature stabilization
In a method of temperature stabilization of a reference voltage, in a first prespecified time interval, a current having a first constant amperage and, in a second prespecified time interval, a...
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5945819 |
Voltage regulator with fast response
The invention relates to a voltage regulator connected between first and second voltage references and having an output terminal for delivering a regulated output voltage. The voltage regulator...
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5945870 |
Voltage ramp rate control circuit
Various embodiments for controlling a ramp rate of a high voltage generator circuit such as a charge pump circuit are disclosed. In one embodiment the ramp rate of the output signal is controlled...
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5942933 |
Internal voltage generation circuit for semiconductor device
An internal voltage generation circuit for a semiconductor device includes a voltage generating unit for converting the level of an external voltage in accordance with a reference voltage applied...
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5942934 |
On-chip regulator providing good high frequency rejection and noise filtering from the supply
A power supply filter has a primary current source coupled to a node carrying a power supply signal. The second end of the primary current source is coupled to an impedance that is further coupled...
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5936446 |
PWM variable voltage load driver with peak voltage limitation
Pulse width modulation driver circuitry both limits and regulates the voltage that is applied to a load from a power source which provides a voltage that may far exceed the maximum safe load...
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5936455 |
MOS integrated circuit with low power consumption
A MOS integrated circuit comprising a middle potential node to which a middle potential is to be supplied, a first operation circuit operating between a first potential and the middle potential, a...
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5936460 |
Current source having a high power supply rejection ratio
The present invention comprises a noise insensitive current source circuit having a high power supply rejection ratio. The circuit of the present invention is for use with noise sensitive circuits....
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5933049 |
Power-supply circuit with a transformer and an on/off switch at the secondary side of the transformer
A power supply circuit, particularly a flyback converter, comprises a transformer having a secondary winding that powers a load device and/or a rechargeable battery via a rectifier diode. The...
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5933051 |
Constant-voltage generating device
A constant voltage generating device comprises a reference voltage generating circuit, a constant-current circuit unit and a current-to-voltage converting circuit unit. The reference voltage...
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5929658 |
Current-mode sense amplifier
A current-mode sense amplifier includes a current mirror circuit having an input branch controlled by a current input signal to be sensed and an output branch connected to a capacitor. The output...
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5929697 |
Current reference circuit for current-mode read-only-memory
A current reference circuit for use in a memory sense amplifier is described, which generates a mid-point current reference that is insensitive to fabrication process variations. This circuit is...
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5929664 |
Methods, circuits and devices for improving crossover performance and/or monotonicity, and applications of the same in a universal serial bus (USB) low speed output driver
A circuit comprising a first driver circuit, a second driver circuit and a delay circuit. The first driver circuit may be configured to generate a first output signal and a control signal in...
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5926061 |
Power supply noise eliminating method and semiconductor device
A power supply noise eliminating method eliminates power supply noise in a semiconductor integrated circuit having a plurality of first terminals coupled to a first power supply voltage and one or...
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5926062 |
Reference voltage generating circuit
A reference voltage generating circuit includes a constant current circuit, a current mirror circuit, and a load resistor. The constant current circuit generates a constant current proportional to...
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5926060 |
Mirror model for designing a continuous-time filter with reduced filter noise
A current mirror model is provided for designing a continuous-time filter with reduced filter noise. The current mirror model includes an input branch having a voltage V in across a series circuit...
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5923211 |
Reference voltage generation scheme for gate oxide protected circuits
A reference voltage generation circuit is provided for use in gate oxide protected circuits for generating an NMOS reference voltage and PMOS reference voltage in which the NMOS reference voltage...
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5923208 |
Low voltage temperature-to-voltage converter
A temperature-to-voltage converter includes a first circuit for developing a signal having a positive temperature coefficient and a second circuit for developing a signal having a voltage offset...
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5923210 |
High side driver circuit with diagnostic output
A high side driver circuit includes a command voltage source, a first switching transistor having a base connected to the command voltage source, an emitter connected to ground, and a collector...
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5923209 |
Two trim current source and method for a digital-to-analog converter
A trimmable current cell and method for providing an output current at a desired level which may be used to provide a particular current level for a digital-to-analog converter. The cell includes a...
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5923157 |
Semiconductor device capable of decreasing an internal voltage in period of acceleration test
In a semiconductor device comprises an internal circuit and which is supplied with an external voltage, the internal circuit is operated in an internal voltage having a high internal level and a...
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5917368 |
Voltage-to-current converter
A voltage-to-current converter for converting an input voltage signal into an output current signal, while providing a filtering function. The input voltage signal is converted to an intermediate...
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5909128 |
FETs logic circuit
A semiconductor integrated circuit having a field effect transistor formed on a compound semiconductor is disclosed, that comprises a first power supply, a second power supply for supplying a...
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5903182 |
Method and system for providing a regulated core voltage to a processor within a computer system
A method for providing a regulated core voltage to a processor within a computer system is disclosed. In accordance with a method and system of the present invention, a power supply is provided for...
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5903177 |
Compensation network for pinch off voltage sensitive circuits
A control circuit is provided that can be used to compensate for pinch off voltage sensitive circuits. The control circuit comprises a control FET (26) having a gate (27), a drain (29), and a...
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5900775 |
MOSFET with temperature protection
The MOSFET of the invention has a switching element connected between its gate and its source. The switching element causes a reduction of the gate-to-source voltage of the MOSFET. The switching...
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5900772 |
Bandgap reference circuit and method
A bandgap reference circuit (60) provides a selectable bandgap reference voltage that is substantially insensitive to temperature variations of an operating reference circuit. A final curvature...
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5900771 |
Capacitive multiplier for timing generation
A capacitive multiplier circuit for an integrated circuit includes a capacitor coupled between a first node and a second node. A current source is coupled to provide a controlling current to the...
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5898618 |
Enhanced blank check erase verify reference voltage source
A programmable logic device (PLD) performs a self-test blank check erase verify operation on memory elements of the PLD to verify that they are erased prior to programming. An enhanced reference...
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5892390 |
Internal power supply circuit with low power consumption
An internal power supply circuit includes a first output MOS transistor for transmitting a first reference voltage in a source follower mode, an internal reference voltage generating circuit for...
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5889428 |
Low loss, regulated charge pump with integrated ferroelectric capacitors
A charge pump for increasing the value of an input voltage includes a plurality of serially coupled charge pump stages, wherein each charge pump stage includes a P-channel pass transistor coupled...
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5886570 |
Inverter circuit biased to limit the maximum drive current to a following stage and method
An inverter circuit, suitably implemented in the feedback loop of a series pass regulator, limits the maximum drive current through an output drive transistor connected to control the regulator's...
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5886568 |
Open-loop MR biasing circuit with high power supply and common mode rejection
An open-loop biasing circuit for a magnetoresistive element provides high common mode and power supply rejection. Two current sources are connected together by two conduction paths. A first...
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5886565 |
Reference voltage generating circuit having an integrator
A reference voltage generating circuit is provided with a reference voltage output terminal, a voltage dividing circuit that divides a voltage supplied from a power source, and an integrating...
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5883546 |
Array device having functional circuit for a plurality of channels
There is provided an array device including functional circuits for a plurality of channels, constant current generating circuits for the plurality of channels for generating constant currents used...
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5880623 |
Power supply control techniques for FET circuits
Method and circuitry for power control in integrated circuits using field effect transistor (FET) technology are disclosed. According to the present invention, for each circuit block that is biased...
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5880624 |
Constant potential generating circuit and semiconductor device using same
When an intermediate potential is required inside a semiconductor device, the constant potential generating circuit can output a stable potential, while maintaining a high driving capability, so...
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5880625 |
Temperature insensitive constant current generator
A temperature compensatory constant current generator comprises a temperature inversely proportional constant current generator for supplying a temperature inversely proportional current, a...
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5877651 |
Semiconductor memory device that can have power consumption reduced
A semiconductor device having an internal circuit to which a high voltage, higher than the power supply voltage, is supplied for carrying out a predetermined operation, and an internal high voltage...
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5872483 |
Hyperbolic sine and cosine functional circuits, squaring circuit, and OTA consisting of two differential circuits with a dynamic bias current
In a differential circuit including first and second transistors, a constant current circuit causes a constant current to flow through the first transistor. A variable current circuit causes a...
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5869997 |
Intermediate potential generating circuit
In an intermediate potential generating circuit provided in a DRAM, a reference potential generating circuit includes two combinations of a resistor element constituted by a P channel MOS...
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5867057 |
Apparatus and method for generating bias voltages for liquid crystal display
An apparatus and method for generating bias voltages for an LCD driver. A voltage divider including serially connected resistors of a first resistance is arranged to form a DC current path having...
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5859560 |
Temperature compensated bias generator
A temperature compensated current source for driving a multi-vibrator (19) includes a voltage generator (10) that outputs a voltage that is proportional to absolute temperature (PTAT) and a...
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5859563 |
Low-noise low-impedance voltage reference
A voltage reference circuit includes: an amplifier A1 with low open loop output impedance, an output of the amplifier is coupled to a first input of the amplifier A1; and a first resistor R1...
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5856755 |
Bus termination voltage supply
A bus termination voltage supply. The invented voltage supply provides an output voltage from an input voltage using biasing and isolation circuits. A voltage isolation circuit couples an input...
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5854569 |
Current source for rapid switching and reduced oscillatory transients
A current source and a semiconductor integrated circuit device for suppressing fluctuations occured in an output current of current sources composed MOS transistors for switching. A back gate...
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