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| Number | Title | Issue Date |
| 7352215 | High speed latch comparators In a latch circuit having a bistable pair of cross connected transistors of a first polarity and a third transistor of a second polarity, a current signal greater than a bias current is received at a latch circuit port, amplified with the third transistor, and appli... | 04/01/2008 |
| 7295046 | Power down detection circuit A power down reset circuit for asserting a signal when a first VDD voltage falls below a voltage threshold. The circuit has at least one diode coupled to the first VDD voltage. The at least one diode is configured to produce a second voltage. A... | 11/13/2007 |
| 7295057 | Methods and apparatus for characterizing electronic fuses used to personalize an integrated circuit An integrated circuit device having at least one fuse capable of being blown in order to provide measurements of fuse current-voltage characteristics is provided. The integrated circuit device also provides at least one pulse generation circuit associated with the f... | 11/13/2007 |
| 7236016 | Low voltage comparator An integrated circuit comparator comprises a differential amplifier, a source follower circuit coupled to a gate terminal of a first transistor in the differential amplifier, and an output circuit. One or more source follower circuits may be utilized in connection w... | 06/26/2007 |
| 7233197 | Methods and systems for reducing leakage current in semiconductor circuits Leakage currents across circuit components such as transistors are avoided by placing circuits into a low-leakage standby mode. The circuits are configured such that voltage differentials across leakage-prone circuit components are avoided when in standby mode. Vari... | 06/19/2007 |
| 7183623 | Trimmed integrated circuits with fuse circuits A wafer containing integrated circuits having fuses which are selectively blown to trim circuit perimeters. The fuses are located adjacent scribe lanes, and fuse pads are located in the scribe lanes. The integrated circuits are trimmed by selectively energizing the ... | 02/27/2007 |
| 7106129 | Semiconductor device less susceptible to variation in threshold voltage A threshold compensating circuit generates a bias potential VBIAS, that is, a threshold voltage of a MOS transistor offset by a given value. A gate-source voltage having compensation for variation in threshold voltage is thus applied to a transistor. By using a diff... | 09/12/2006 |
| 7053681 | Comparator and method for amplifying an input signal The invention is aimed at providing a novel semi-conductor component, as well as a novel process for reading test data. There is a process for reading test data is made available, including reading test data generated during a semi-conductor component test procedure... | 05/30/2006 |
| 7049859 | Variable threshold comparator interface circuit A signal processing circuit includes a comparator having a fixed and a variable reference input for detection of a positive quasi-sinusoidal waveform pulse. A signal detection circuit includes a low pass input filter, a voltage input clamp, a variable detection thre... | 05/23/2006 |
| 7049876 | Level shift circuits and related methods A level shifting circuit functions by taking an input signal, producing a complement of the input signal, applying the input signal and its complement to comparable voltage divider pairs to set up a differential input signal that is applied to a comparator that prod... | 05/23/2006 |
| 6992489 | Multiple voltage level detection circuit A circuit configurable for indicating a voltage level of an input signal applied to the circuit includes at least one transistor having a first terminal connected to a first voltage supply, a second terminal configured for receiving the input signal, and a third ter... | 01/31/2006 |
| 6911858 | Comparator with offset canceling function and D/A conversion apparatus with offset canceling function A comparator with an offset canceling function and a D/A conversion apparatus capable of canceling an input/output offset with high accuracy using this comparator. To eliminate unbalance between right and left currents of the differential circuit making up the compa... | 06/28/2005 |
| 6861878 | Chopper comparator A chopper comparator has inverters in input and output stages including NMOS transistors to control connection and disconnection of an inverter circuit of each inverter. During a non-operation period of the chopper comparator, parts of the inverters are disconnected... | 03/01/2005 |
| 6828829 | Semiconductor device having input buffers to which internally-generated reference voltages are applied A semiconductor device is constructed by at least one reference voltage generating circuit for generating a reference voltage, a plurality of input voltage pads for receiving input voltages, a control signal pad for receiving a control signal, and a plurality of inp... | 12/07/2004 |
| 6777985 | Input/output buffer having reduced skew and methods of operation A buffer has an amplifier that receives an external signal, a reference voltage, and outputs an amplified signal. The amplified signal is responsive to the difference between the external signal and the reference voltage. An inverter receives the amplified signal an... | 08/17/2004 |
| 6737893 | Semiconductor integrated circuit with input/output interface adapted for small-amplitude operation A semiconductor integrated circuit includes a switch unit for controlling the supply of a power source voltage to a signal amplification circuit for receiving an input signal, and a control unit for selectively turning ON and OFF the switch unit in accordance with t... | 05/18/2004 |
| 6448823 | Tunable circuit for detection of negative voltages The present invention provides a tunable circuit for quickly optimizing an electrical field generated by the F-N tunneling operation. To optimize this electrical field, the charging of the positive charge pump is begun after the charging of the negative c... | 09/10/2002 |
| 6424188 | Signal transmission device In a conventional signal transmission device that transmits signals fed thereto to another device through a transformer, when the direction of the current flowing through the primary coil of the transformer is switched by switching devices connected in se... | 07/23/2002 |
| 6414539 | AC timings at the input buffer of source synchronous and common clock designs by making the supply for differential amplifier track the reference voltage A differential amplifier power supply is derived from the same source that generates the reference voltage for the differential amplifiers. This will ensure the direction of voltage level shifts of these two voltages to be in tandem. That is, these two vo... | 07/02/2002 |
| 6384639 | Circuit and method for reducing static power dissipation in a semiconductor device A method for reducing static power dissipation in a semiconductor device is provided. The method is characterized in that utilizing a simple control device connecting with a MOS device, serving for a drain voltage controller, instead of the conventional v... | 05/07/2002 |
| 6281714 | Differential receiver A receiver is provided which quickly and efficiently recognizes signals by including with the receiver a resolving circuit which is coupled to a signal generation circuit which provides a differential current. The resolving circuit is coupled to a latchin... | 08/28/2001 |
| 6275075 | Current comparator The present invention provides a current comparator that reduces both input and output resistance. The current comparator positions a resistive feedback network in a first inverting amplifier of an input stage. The input stage according to the present inv... | 08/14/2001 |
| 6252436 | Method and arrangement for determining state information of power semiconductor A method and arrangement for determining state information of a high-power semi-conductor, the power semiconductor comprising a collector (C), an emitter (E) and a gate (G), and a gate driver (3) comprising an auxiliary voltage input is connected to the g... | 06/26/2001 |
| 6236243 | Negative voltage level detection circuit A level detector enables high speed operation at low voltage with eliminating dependency to fluctuation of a power source voltage and tolerance in a device, and further permits stable operation. The level detecting circuit performs predetermined level shi... | 05/22/2001 |
| 6218871 | Current-switching method and circuit for digital-to-analog converters A current-switching method and circuit is provided for use with digital-to-analog converters (DACs) to provide improved compliance and linearity in the output current characteristic. In the current-switching circuit, an additional transistor that is set t... | 04/17/2001 |
| 6201419 | Peak detection circuit A collector of a transistor Q3 to a base of which an amplifier signal Sa generated from the differential amplifier is input is connected with one end of the resistive element RC1 and one end of a resistive element RC2. Other ends of the resistive element ... | 03/13/2001 |
| 6177816 | Interface circuit and method of setting determination level therefor An interface circuit includes first and second current mirrors, first and second input circuits, and a reference setting unit. Each of the first and second current mirror circuit has a current input terminal and a current output terminal. The first input ... | 01/23/2001 |
| 6091226 | Voltage judgment circuit and battery cell pack having the same Disclosed herein is a voltage judgment circuit comprising one or more diodes inserted in the forward direction of a judgment voltage, a current extraction section for extracting a forward current of the diodes, and a comparison section for comparing an ou... | 07/18/2000 |
| 6020768 | CMOS low-voltage comparator A comparator circuit providing for improved symmetry of operation. The circuit includes two delay paths to facilitate rising and falling input transitions. Such paths are made up of an equal number and type of current mirrors. The circuit also includes an... | 02/01/2000 |
| 5838173 | Device and method for detecting a low voltage in a system In a system, a low-voltage detecting circuit includes an oscillating section for outputting a rectangular wave proportional to a supply voltage according to a control signal selected by the user and produced by a micro-controller unit, and a low-voltage d... | 11/17/1998 |
| 5801554 | Semiconductor Integrated circuit device for handling low amplitude signals A semiconductor integrated circuit device is provided having a low-amplitude input/output interface for inputting or outputting an input/output signal synchronously with a clock signal and transferring the input/output signal with an amplitude correspondi... | 09/01/1998 |
| 5760615 | Zero current enable circuit A zero current enable circuit and zero current enable method are disclosed. The integrated circuit features at least one sense circuit and a logic gate. The sensing circuit combines a broken band gap reference voltage, a voltage divider, a voltage clamp, ... | 06/02/1998 |
| 5714894 | Current comparator arrangement A current comparator arrangement has first and second inputs (100, 103), an output (105), and cross-coupled transistors (MP1, MP2) which form a latching circuit. The arrangement also includes current stores (MP3, MP4), the input currents to be compared be... | 02/03/1998 |
| 5675268 | Overcurrent detection circuit for a power MOSFET and method therefor An overcurrent detector circuit (21) for a power MOSFET (22) is described. The overcurrent detector circuit (21) generates a bias voltage corresponding to the drain to source voltage of the power MOSFET (22). The drain to source voltage correlates directl... | 10/07/1997 |
| 5666075 | Electronic circuit comprising a comparator This invention relates to the operation of common electronic comparators and particularly to an electronic circuit with a comparator for the operational test of integrated circuits (ICs). According to the invention, the electronic circuit comprises a comm... | 09/09/1997 |
| 5652540 | Current sensing circuit having at least one sense cell A power semiconductor device (4) has a main current carrying section (4a) with a number of parallel-connected active device cells (5) and a first main electrode (6) coupled to a first terminal (2), a second main electrode (7) connected to a second termina... | 07/29/1997 |
| 5313115 | Comparator A comparator comprises transistors to turn on/off an input terminal and a control circuit to enable the transistors in a high impedance input state. The high impedance input state can be detected by the above construction without additionally providing an... | 05/17/1994 |
| 5017805 | Offset cancel latching comparator A differential pair of transistors (Q2, Q3), the sources of which are connected to a current source (Q1); first and second input terminals (IN, VX) connected to the gates of the first and second transistors respectively; first and second output terminals ... | 05/21/1991 |
| 4935645 | Fusing and detection circuit A fusing and detection circuit includes a diode fusing element which is coupled to a fuse input terminal of an integrated circuit. Upon the application of the proper voltage at the fuse input terminal, the fuse element is blown, causing the diode to becom... | 06/19/1990 |
| 4902913 | Analog comparator A novel analog comparator having cascaded gain stages powered by two buses, the voltages on which are dependent on a reference input voltage. A network, responsive to the reference input voltage, sets the voltages on the buses and isolates the buses from ... | 02/20/1990 |
