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| Number | Title | Issue Date |
| 7719340 | Internal voltage trimming circuit for use in a semiconductor memory device and method thereof An internal power voltage trimming circuit and its method individually or simultaneously perform level trimming for a plurality of power voltages in a semiconductor memory device. The internal power voltage trimming circuit includes a trimming control signal generat... | 05/18/2010 |
| 7358793 | Semiconductor integrated circuit apparatus Providing semiconductor integrated circuit apparatus capable of controlling the substrate voltage of a MOSFET so that the drain current for an arbitrary gate voltage value in a subthreshold region or a saturated region will be free from temperature dependence and pr... | 04/15/2008 |
| 7352230 | Internal voltage trimming circuit for use in semiconductor memory device and method thereof An internal power voltage trimming circuit and its method individually or simultaneously perform level trimming for a plurality of power voltages in a semiconductor memory device. The internal power voltage trimming circuit includes a trimming control signal generat... | 04/01/2008 |
| 7265640 | Circuit approach for common mode control in high-frequency clocks An example embodiment is directed to shifting the common mode voltage of an analog oscillation stage toward a center line between the upper and lower power-supply rails of a first digital circuit. The first digital circuit has a digital input port adapted to respond... | 09/04/2007 |
| 7205832 | Temperature compensated, high efficiency, controlled input impedance diode detector A diode detector comprising a detector network adapted to detect and multiply the detected voltage coupled to a divider network that comprise diodes in equal number to the number of diodes in the detector network, provides a passive detector applicable to any applic... | 04/17/2007 |
| 7138851 | Semiconductor integrated circuit apparatus Providing semiconductor integrated circuit apparatus capable of controlling the substrate voltage of a MOSFET so that the drain current for an arbitrary gate voltage value in a subthreshold region or a saturated region will be free from temperature dependence and pr... | 11/21/2006 |
| 7132873 | Method and apparatus for avoiding gated diode breakdown in transistor circuits An N-channel transistor protection circuit and method are disclosed that prevent gated diode breakdown in N-channel transistors that have a high voltage on their drain. The disclosed N-channel protection circuit may be switched in a high voltage mode between a high ... | 11/07/2006 |
| 7116160 | Booster A booster includes a boosting circuit and a feedback control circuit. The boosting circuit is used to boost an input voltage into a predetermined output voltage; the feedback control circuit detects the output voltage of the boosting circuit and stops boosting the v... | 10/03/2006 |
| 7102338 | Multi-sense voltage regulator A voltage regulator has an output path to couple to a load. A first sense point at a first sense location on the output path is to sense a first feedback signal for the voltage regulator. And, a second sense point at a second sense location on the output path is to ... | 09/05/2006 |
| 7064593 | Bus-hold circuit A bus hold circuit that satisfies both the over-voltage tolerance and maximum leakage current ‘Ioff’ specification without incorporating a diode in pull-up path of a bus-hold circuit is disclosed herein. Specifically, the bus-hold circuit includes a f... | 06/20/2006 |
| 7062662 | I/O resonance cancellation circuit based on charge-pumped capacitors An apparatus for canceling an effect of power supply resonance is provided. The effect of power supply resonance is a variation in power supply voltage potential. This variation may substantially affect an output buffer by causing the output buffer's output to sag b... | 06/13/2006 |
| 7038431 | Zero tracking for low drop output regulators A low drop output regulator may be used for power management. The low drop out regulator may include an amplifier network having a transfer function may be used to provide a substantially constant voltage and variable current to a load. A zero compensation network m... | 05/02/2006 |
| 7027307 | Clock routing in multiple channel modules and bus systems An apparatus is provided, which includes a memory interface circuit, a clock signal generating circuit, and a plurality of memory circuits. The memory circuits are operatively coupled and arranged in an order on a plurality of memory modules, such that the memory mo... | 04/11/2006 |
| 6859069 | Methods and systems for providing load-adaptive output current drive Methods and systems for sensing load conditions and for adjusting output current drive according to the sensed load conditions to maintain one or more signal characteristics within a desired range. Load conditions are sensed by monitoring one or more signal characte... | 02/22/2005 |
| 6825715 | Temperature compensated, high efficiency diode detector A diode detector comprising a detector network adapted to detect and multiply the detected voltage coupled to a divider network that comprise diodes in equal number to the number of diodes in the detector network, provides a passive detector applicable to any applic... | 11/30/2004 |
| 6791390 | Method of forming a voltage regulator semiconductor device having feedback and structure therefor In an exemplary embodiment, a system (10) is formed to include a semiconductor device (11) that is formed to function as a voltage regulator. The semiconductor device (11) is formed to have a control loop that includes an amplifier (30) a... | 09/14/2004 |
| 6717449 | Variable resistance circuit and application circuits using the variable resistance circuit A variable resistance circuit and application circuits using the same capable of offsetting the variance in the manufacture of integrated circuit and the influence of ambient temperatures, including: a control circuit having a plurality of constant-current output te... | 04/06/2004 |
| 6710632 | Drive circuit A drive circuit including circuitry that can be easily adjusted, the output drive current can be kept balanced, and high-precision drive current can be supplied to the load circuit. Clamp circuit 10 is furnished to hold the drain voltage of current output tra... | 03/23/2004 |
| 6690199 | Methods and systems for providing load-adaptive output current drive Methods and systems for sensing load conditions and for adjusting output current drive according to the sensed load conditions to maintain one or more signal characteristics within a desired range. Load conditions are sensed by monitoring one or more sign... | 02/10/2004 |
| 6614281 | Method and device for disconnecting a cascode circuit with voltage-controlled semiconductor switches A method and an apparatus for turning off a cascode circuit comprising a series circuit formed by a low-blocking-capability and high-blocking-capability semiconductor switch, are described. When a turn-off command arrives, the gate voltage of the low-bloc... | 09/02/2003 |
| 6552592 | Differential input circuit for digital signal processing system The invention relates to an evaluation device (4) connected to the output of an A/D converter (3) for comparing the direct component of a digitally converted input signal having a threshold value and at least one power source (13, 14, 17, 18) that may be ... | 04/22/2003 |
| 6496049 | Semiconductor integrated circuit having a current control function This semiconductor integrated circuit is constituted by any one of a p-channel MOS transistor and an n-channel MOS transistor, and is connected between the control terminal and the common terminal so as to produce predetermined voltage. The comparing circ... | 12/17/2002 |
| 6388497 | Circuit arrangement and method for maintaining control of a peripheral device by a controller during a controller The method and circuit arrangement and/or component prevents a change of a preset or set state of a control member and/or control unit (102) during a reset of controller or regulator (100) that controls this control member and/or control unit. The circuit... | 05/14/2002 |
| 6369644 | Filter circuit A filter circuit extracts a desired signal in the presence of interference by using a variable gain circuit whose input is the frequency converted received signal and whose output is fed through an active filter to produce the desired signal. The signal l... | 04/09/2002 |
| 6313686 | Waveform output device with EMI noise canceler mechanism When PMOS transistors are successively turned off, the resistance between a PMOS transistor and a power supply VDD is changed, and the amplitude of a waveform at the junction between the last-mentioned PMOS transistor and an NMOS transistor is controlled ... | 11/06/2001 |
| 6262630 | Rapidly-responding diode detector with temperature compensation A diode detector that is stable and linear over a wide range of variations in both temperature and power supply voltage and can be used to regulate a.c. signals produced by devices that are responsive to control signals includes a detector diode and a fir... | 07/17/2001 |
| 6184715 | Bus-hold input circuit adapted for receiving input signals with voltage levels higher than the voltage supply thereof An input circuit for an integrated circuit for interfacing an external signal line external to the integrated circuit includes first circuit means having an input that may be coupled to the signal line to provide a regenerated signal at their output, and ... | 02/06/2001 |
| 6154088 | Clocking scheme and charge transfer switch for increasing the efficiency of a charge pump or other circuit An efficient charge pump circuit. Increased efficiency compared to previous pump circuits is achieved through use of a novel charge transfer switch and associated clocking scheme which reduces the supply current required to operate the charge pump. Instea... | 11/28/2000 |
| 6121826 | Comb filter and method for controlling the same A comb filter easily implementable as a monolithic LSI without using a large-capacitance capacitor is provided. A comb-like frequency characteristic is realized by two delay circuits for delaying a signal for mutually different amounts of time and an oper... | 09/19/2000 |
| 6118333 | Clock buffer circuit and clock signal buffering method which can suppress current consumption A clock buffer circuit includes an amplifier section and a control section. The amplifier section amplifies a clock signal in response to a control signal. The control section generates the control signal based on an amplitude of the clock signal.... | 09/12/2000 |
| 5926051 | Self refresh timer By setting the substrate potential of a transistor of a driver means lower than the substrate potential of a transistor of a bias means in an intermediate potential generation circuit which supplies a cell plate potential of a memory cell and a precharge ... | 07/20/1999 |
| 5898347 | Large signal attenuator An attenuator circuit having three cascaded attenuator stages which become active, one at a time, as an input signal strength increases. In the highest gain state, the three attenuator stages are active. As the input signal increases, the attenuator stage... | 04/27/1999 |
| 5825239 | Peak detector for automatic gain control The present invention includes a variable gain amplifier to output two differential signals which are level shifted and compared through two comparators to drive a charge pump which produces either a discharge current or a charge current to provide feedba... | 10/20/1998 |
| 5793241 | High speed active op-amp clamp An op amp clamp for charging or discharging a capacitor prevents the voltage on the capacitor from going beyond a reference voltage determined by a reference clamp voltage applied to an input of a differential amplifier. The second input of the differenti... | 08/11/1998 |
| 5793249 | System for providing tight program/erase speeds that are insensitive to process variations The system and method of enhancing the yield of flash memory circuit is disclosed. The method comprises performing a diagonal erase of a select group of memory cells on a wafer during sort. If the memory cells do not erase in a satisfactory manner, the co... | 08/11/1998 |
| 5767703 | Differential bus drivers This invention relates to differential bus drivers for use in, for example, communication systems. The driver achieves highly symmetrical wave forms at the output stage for both high and low side drivers. In addition, the layout of components of the high ... | 06/16/1998 |
| 5742195 | Semiconductor integrated circuit with MOS Transistors compensated of characteristic and performance deviations and deviation compensation system therein A plurality of MOS transistors connected to each other at a substrate electrode thereof to have a substrate potential are deviation-compensated by a combination of a power source having a power source potential independent from the substrate potential, a ... | 04/21/1998 |
| 5694038 | Detector of passing magnetic articles with automatic gain control A magnetic-field-to-voltage transducer includes a Hall element and a digitally gain-controlled Hall-voltage amplifier that produces an analog voltage Vsig having excursions of one polarity corresponding to the passing of magnetic articles. Vsig is applied... | 12/02/1997 |
| 5672997 | Method and apparatus for reducing the nominal operating voltage supplied to an integrated circuit Apparatus for reducing the operating voltage for an integrated circuit. The integrated circuit includes a first input conductor coupled to an operating voltage and a second input conductor coupled to system ground. A logic circuit having a positive rail a... | 09/30/1997 |
| 5600271 | Input signal interface with independently controllable pull-up and pull-down circuitry An input interface circuit for a logic device having a configuration of pull-up and pull-down devices for defining the logic level based on an undriven input signal where the pull-up and pull-down devices are independently and separately programmable to f... | 02/04/1997 |
