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6144248 Reference voltage generating circuit having a temperature characteristic correction circuit providing low temperature sensitivity to a reference voltage  
A reference voltage generating circuit generates a reference voltage having a flat temperature characteristic over a practical temperature range. In a reference voltage transistor pair, a depletion...
6144219 System and method for isolation of varying-power backed memory controller inputs  
An isolation mechanism serves to isolate digital signal processor outputs from a dynamic random access memory controller upon the occurrence of a low power condition. The isolation prevents...
6144218 High speed analog compensated input buffer  
An analog process/voltage/temperature (PVT) compensated buffer includes a differential amplifier providing a first output signal indicative of a difference between an input signal and a reference...
6140864 Circuit for controlling leakage current in large scale integrated circuits  
In an LSI circuit, respective voltages on power-source lines connected to the respective sources of transistors which are turned OFF in a circuit block in the standby state are controlled by a...
6124754 Temperature compensated current and voltage reference circuit  
A reference circuit includes a first resistive element and a current source. The first resistive element is adapted to produce an output voltage based on a first current and a resistance of the...
6121823 Electrical circuit for sensors requiring a variety of bias voltages  
An electrical circuit provides a variety of stable and reliable bias voltages to accommodate the bias requirements of various sensor types. The electrical circuit comprises a programmable analog...
6114912 Integrated amplifier having a voltage-controlled current source  
The voltage-controlled current source receives a control voltage from an operational amplifier which itself receives a reference voltage at one input from a bias circuit. The voltage-controlled...
6111454 Power supply circuit  
A semiconductor device comprises a voltage-driven switching element having a cathode and an anode, in which a voltage is to be applied between the cathode and anode, a power-supply circuit...
6111456 Semiconductor circuit  
A semiconductor circuit comprises an I-type of NMOS transistors N15 and N16 connected between a power supply voltage VDD and a ground electrode. The gate electrode of the NMOS transistor N15 is set...
6100749 Current source circuit  
A current source circuit includes a series-circuit connected between a power source node and ground and comprising a reference current source circuit, a first transistor Q1 of an NPN type having...
6094095 Efficient pump for generating voltages above and/or below operating voltages  
A method and apparatus comprising a first circuit configured to generate a first output in response to a first input, a second circuit configured to present a second output in response to a second...
6087891 Integrated power supply voltage generators having reduced susceptibility to parasitic latch-up during set-up mode operation  
Integrated power supply voltage generators include a boosted voltage generator which generates a boosted voltage signal (Vpp) at a first level on a boosted voltage signal line during a set-up time...
6087881 Integrated circuit dual level shift predrive circuit  
A dual stage voltage level predrive circuit for an integrated circuit chip including two level shifter stages in series. The voltage level shifting circuit uses single dielectric layer devices and...
6081459 Cell plate voltage generator of a semiconductor memory device  
A cell plate voltage generator of a semiconductor memory device for selectively providing a cell plate potential having various voltages to thereby substantially reduce the time required for a...
6078210 Internal voltage generating circuit  
The present invention relates to an internal voltage generating circuit. The internal voltage generating circuit comprises a reference voltage generating circuit for generating a reference voltage,...
6067269 Semiconductor memory device capable of operating at a low power supply voltage  
A semiconductor memory device is provided which uses an externally applied power supply voltage as its operating voltage. The device comprises plural memory cells each arranged in intersections of...
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...
6040734 Supply voltages switch circuit  
A circuit for switching between supply voltages and in particular for non-volatile flash memory devices and of the type comprising a first and a second circuit branch each incorporating a pair of...
6034562 Mixed signal processing system and method for powering same  
A mixed signal processing system (22) includes digital (28) and analog (29) systems and is powered by a variable external voltage, such as a battery voltage. A voltage regulator (41) regulates the...
6031778 Semiconductor integrated circuit  
A semiconductor integrated circuit capable of eliminating a problem of a conventional semiconductor integrated circuit in that although a power saving mode can be applied normally to a combination...
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...
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...
6023157 Constant-current circuit for logic circuit in integrated semiconductor  
According to the present invention, a first voltage is generated at a drain of a first MESFET by a first stage circuit that includes a plurality of diode elements and the first MESFET with its gate...
6008688 Apparatus, and associated method, for preventing occurrence of latch-up in an electronic circuit  
A latch-up protector, and an associated method, for an electronic circuit powered by both a fixed power supply and a pumped power supply. Operation of the latch-up protector prevents the occurrence...
5990754 Phase and base potential converter and temperature-compensated crystal oscillator having the same  
A phase and base potential converter according to the invention is constructed as follows. Two MOS transistors having the same size and characteristic are connected in series between a first power...
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...
5977815 Integrated CMOS circuit  
A CMOS circuit (10), which is integrated in a semiconductor substrate, comprises a principal circuit part (12), which includes the major part of the circuit components in a well isolated from the...
5973543 Bias circuit for bipolar transistor  
A bias circuit for a bipolar transistor includes a constant voltage source connected to a base electrode of the bipolar transistor; and a resistor connected in series between the constant voltage...
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...
5966043 Power supply switching circuit  
A power supply switching circuit comprises first and second PMOSFETs connected in series between a writing high voltage and an output terminal in the named order, and third and fourth PMOSFETs...
5963083 CMOS reference voltage generator  
A CMOS voltage generator for providing a reference voltage VDD2 that will track the low level power supply voltage VDD (approximately 3.0V-3.6V) as long as the power supply is present. When VDD is...
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...
5949274 High impedance bias circuit for AC signal amplifiers  
The present invention discloses an integrated constant bias voltage generator using only active devise to simulate a high impedance node, as seen from a capacitively coupled input signal. A...
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...
5942932 Circuit and method for preventing latch-up in a CMOS semiconductor device  
A circuit and method for preventing latch-up in a CMOS semiconductor device. In an n-type substrate and p-type well region semiconductor, the method comprises the steps of pulling V sub of the...
5939933 Intentionally mismatched mirror process inverse current source  
An MOS transistor current source has a current mirror constructed of an MOS transistor pair with the transistors having intentionally mismatched W/L aspect ratios such that the intentionally...
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...
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....
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...
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...
5917358 Method and output buffer with programmable bias to accommodate multiple supply voltages  
Output buffer (100) translates input signals from one voltage range to a second voltage range. The second voltage range may be identical to the first range or may be greater. The particular range...
5912566 Switch open-close state-detecting circuit  
A switch open-close state-detecting circuit for supplying an interrupt signal to a control terminal of a controller in response to a change of state of a switch to either open or closed state by...
5912580 Voltage reference circuit  
A voltage reference circuit capable of realization of two reference voltages having different temperature coefficients is provided. This circuit includes a first bipolar transistor, a second...
5912581 Spurious-emission-reducing terminal configuration for an integrated circuit  
Spurious-emission-reducing terminal configuration for an integrated circuit, particularly a monolithic integrated circuit, operable within an unshielded board network, the integrated circuit being...
5910750 Low power consumption switching device for power source  
In order to reduce power consumption of the electronic device while it is inactive, the main switch 32 is shifted to the non-conductive state when the electronic device driven by the battery is...
5909142 Semiconductor integrated circuit device having burn-in test capability and method for using the same  
A semiconductor integrated circuit device includes a flat-range voltage supply unit which steps down an external power supply voltage and generates a resultant, flat-range voltage, and a burn-in...
5905403 Multiple output programmable reference voltage source  
A programmable voltage source produces a set of output reference voltages having levels determined by a sequence of input data values, each input data value corresponding to a separate one of the...
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...
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...
5892386 Internal power control circuit for a semiconductor device  
An internal power control circuit for a semiconductor device allows easy testing of the internal circuit blocks or memory arrays at various voltage levels. In the semiconductor device, internal...
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