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6064250 |
Various embodiments for a low power adaptive charge pump circuit
A low voltage current source generates low voltage signals for powering a variable frequency oscillator. The low voltage signals are at a slightly higher voltage until a negative substrate bias is...
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6064557 |
Semiconductor device structured to be less susceptible to power supply noise
A semiconductor device comprises an MOS transistor, as a capacitive element, formed at the surface of a semiconductor substrate. A first power supply interconnection, above the substrate, applies a...
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6064274 |
RCB cancellation in high-side low power supply current sources
A current source circuit for providing a stable current into a filter element of a phase-lock-loop circuit of a clock generator. The current source circuit comprises a first resistor coupled to a...
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6061192 |
Method and circuit for providing feedback in a pre-amplifier for a multi-head disk drive
A system for providing feedback to a selected read head in a multi-head disk drive includes first and second feedback circuits is disclosed. A first feedback circuit 200 provides for correction of...
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6057727 |
Accurate constant current generator
The present invention relates to a constant current generator including a reference voltage source providing a constant voltage with respect to a first ground; an operational amplifier receiving...
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6046624 |
Internal power supply generating circuit for a semiconductor memory device
An internal power supply generating circuit for a semiconductor memory device reduces fluctuations in the external power supply by reducing the rate at which a drive transistor is turned on and...
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6043687 |
Integrated circuit precision resistor ratio matching
A precision analog circuit ensures precision matching between two or more resistive elements. In order that the two or more resistive elements are truly matched, a first electrical value, such as V...
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6043703 |
Low power active input circuit
An active input circuit module includes a plurality of active input circuits disposed on a circuit board each circuit having an input and a return. Each active input circuit further has a constant...
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6040737 |
Output buffer circuit and method that compensate for operating conditions and manufacturing processes
The present invention provides improved output buffers for use on IC Chips. These output buffers incorporate a compensation circuit for compensating the performance characteristics of transistors...
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6041089 |
Bit phase synchronizing method and bit phase synchronizing circuit
(1) A bit phase adjusting circuit receives input data Din and passes it to a first group of delay gates which are connected in series to generate a set of data available for selection, the set...
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6031414 |
Constant current circuit with small output current fluctuation
A constant current circuit whose output current is less dependent on a current gain of a transistor or an Early voltage thereof is provided. The constant current circuit includes a differential...
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6031413 |
Semiconductor integrated circuit using direct coupled FET logic configuration for low power consumption
A semiconductor integrated circuit is constructed with multiple stages of circuit blocks connected in vertical series between a first power supply line and a second power supply line. At least one...
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6028640 |
Current source and threshold voltage generation method and apparatus for HHK video circuit
A current source and threshold voltage generation circuit generates a current, through a ratio of devices, and a corresponding threshold voltage signal, to be utilized by a timing circuit for...
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6025748 |
Precharge device for semiconductor integrated circuit device
The present invention provides a semiconductor integrated circuit device in which its internal node can be precharged at a high speed while suppressing current dissipation as in a conventional...
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6023190 |
High voltage generation circuit which generates high voltage by digitally adjusting current amount flowing through capacitor
A high voltage generation circuit includes an inductor, a PN diode, a capacitor and a transistor. A high voltage sampling/division circuit, a control register, a voltage comparator, a counter, a...
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6023189 |
CMOS circuit for providing a bandcap reference voltage
A low voltage submicron CMOS circuit (10) for providing an output bandgap voltage (V BG ) that is substantially independent of temperature and power supply variations has been provided. The CMOS...
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6023185 |
Temperature compensated current reference
A circuit for providing a temperature-compensated reference current, the circuit comprising a current mirror and a V BE multiplier circuit. The current mirror includes a reference transistor with...
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6020780 |
Substrate potential control circuit capable of making a substrate potential change in response to a power-supply voltage
In a substrate potential control circuit, first and second substrate potential detection circuits have different intersected characteristics of Vcc versus V SUB detection level and produce, in...
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6014053 |
Amplifier MOS biasing circuit for a avoiding latch-up
An amplified MOS biasing apparatus and method for avoiding latch-up within an integrated circuit. An amplifier receives a plurality of voltages and multiplies the voltages by a gain so as to...
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6011413 |
Structure of current measuring circuit
A current-measuring circuit is provided which is designed to measure the current flowing through an electric load and a switching transistor. The current-measuring circuit includes a...
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6011427 |
High efficiency base current helper
High efficiency base current helper to improve the accuracy of current mirrors particularly useful for current mirror utilizing relatively low beta bipolar junction transistors. The high efficiency...
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6008632 |
Constant-current power supply circuit and digital/analog converter using the same
A constant-current power supply circuit includes a bias circuit (20); first and second transistors (11 and 12); an output terminal (OUT); a bias voltage defining circuit (30 & 40); and a...
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6008677 |
Voltage recovery circuit and method therefor
A method an apparatus for performing a reset operation in an integrated circuit where a memory programming voltage is recovered allowing use of the memory during reset. The voltage recovery unit...
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6005435 |
High-voltage generating circuit
A high-voltage generating circuit includes a high-voltage production circuit, a high-voltage detecting circuit, and a control circuit. The high-voltage detecting circuit has a high-voltage circuit...
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6002293 |
High transconductance voltage reference cell
A high transconductance voltage reference cell produces a large change in output current for a very small change in input voltage near a settable equilibrium point, which can be made equal to two...
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6002617 |
Fast power up reference voltage circuit and method
A reference voltage circuit includes a self-decoupling boost circuit coupled between a supply voltage and an output node. The boost circuit provides a boost current to accelerate the transition of...
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5999041 |
Load actuation circuit
An output MOS transistor and a current-detecting MOS transistor are connected commonly at their drains and gates. A gate voltage is fed to the gates of these transistors via signal lines. When the...
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5998983 |
Device for generating a DC reference voltage
A device that generates a DC reference voltage approximately equal to half a DC supply voltage. It includes an input stage forming a first potentiometric divider comprising two branches having an...
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5994945 |
Circuit for compensating for variations in both temperature and supply voltage
A compensation circuit which accounts for variations in both temperature and V CC supply voltage on an integrated circuit. The compensation circuit includes four quasi-independent compensation...
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5994950 |
Regulator built-in semiconductor integrated circuit
A semiconductor integrated circuit includes an internal circuit, a first external power supply connection terminal, a regulator, an external control terminal, transistors, and a second external...
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5990729 |
Semiconductor integrated circuit having first and second voltage step down circuits
A semiconductor integrated circuit can precisely identify the level of an external input signal by stably supplying an internally stepped down voltage. It comprises a first N-channel MOS transistor...
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5990727 |
Current reference circuit having both a PTAT subcircuit and an inverse PTAT subcircuit
A current reference circuit is capable of operation at a very low supply voltage, such as 1 volt. The current reference circuit is composed of a current mirror circuit, serving as an inverse PTAT...
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5986496 |
Integrated circuit having programmable bias circuits
The present invention utilizes the integrated circuit manufacturing process to produce integrated circuits including bias circuits which implement active devices having uniform gain and gate...
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5982225 |
Hot electron compensation for improved MOS transistor reliability
A circuit actively monitors and measures the amount of MOS device degradation due to, for example, the hot electron effect, and makes compensatory adjustments to device voltage levels or clock...
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5982201 |
Low voltage current mirror and CTAT current source and method
A low voltage CTAT current source includes a bipolar transistor connected across two series-connected resistors. A voltage developed across the resistors turns on the transistor, making the current...
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5982227 |
CMOS current source circuit
An improved CMOS current source circuit capable of constantly generating a certain reference voltage irrespective of an analog supplying voltage, a substrate temperature, and a temperature...
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5977811 |
Shift level circuit for a high side driver circuit
A translator circuit for a drive circuit of a power transistor connected to an electric load. The translator circuit includes a first current generator placed between a supply voltage reference and...
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5977817 |
Current biased mode control circuit
A circuit device for selecting operating modes using a single reference pin that uses current rather than voltage in an electronic subsystem. An operating mode is selected by modulating the input...
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5973550 |
Junction field effect voltage reference
A JFET pair having unequal pinchoff voltages is operated in saturation with equal source-drain current to channel width-to-length ratios to provide a reference voltage output. Positive or negative...
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5973528 |
Control circuit and method for a temperature sensitive device
An embodiment of the present invention is a switching power supply that includes a power switching device and a control circuit to control the power switching device. Under normal operational...
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5973540 |
Ladder tracking buffer amplifier
A structure and a method are provided to receive a high-impedance reference voltage signal and generate a desired output signal that is capable of sourcing enough current to meet the demands of a...
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5973547 |
Self-biasing, offset-nulling power supply monitor circuit
An active digital voltage regulator circuit is a two terminal device that is connected in shunt to first and second power supply input lines. The active digital voltage regulator circuit stores...
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5973544 |
Intermediate potential generation circuit
An intermediate potential generating circuit mainly includes an intermediate potential generating portion and an output portion. In this event, the intermediate potential generating portion...
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5969566 |
Circuit configuration for generating a reference potential
A circuit for generating a reference potential includes a first transistor having an emitter connected to a ground potential, a base, and a collector connected to the base; a second transistor...
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5966041 |
High swing interface output stage integrated circuit for interfacing a device with a data bus
A high swing interface output stage integrated circuit for interfacing a data communications device with a data bus which may operate at voltage ranges outside the supply voltage of the interface...
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5963082 |
Circuit arrangement for producing a D.C. current
A circuit arrangement (16) for producing a D.C. current, includes a feedback loop for producing a reference current from an output terminal (27) with a negative temperature coefficient. The...
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5963081 |
Circuit arrangement having at least two signal paths
A circuit arrangement having at least two signal paths which can be alternately enabled by feeding respective controllable current sources and by logic signals selecting one of these controllable...
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5959446 |
High swing current efficient CMOS cascode current mirror
A current mirror having a high output voltage swing and which uses only one reference current source. The current source provides an output current that is substantially equal to the reference...
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5956283 |
Method of reading a flash memory cell and a read voltage generating circuit
The present invention disclosed a method of reading a flash memory cell and a read voltage generating circuit which can perform a stable read operation regardless of a power supply voltage by...
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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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