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6657462 |
Conditional clock buffer circuit
A conditional clock buffer circuit is disclosed. In one embodiment, a conditional clock buffer circuit includes a precharge circuit, a first transistor and a second transistor coupled to the...
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6653873 |
Large loading driver circuit with high speed and low crowbar current
A driver circuit drives heavily loaded signals at high speeds with a reduced crowbar current. One-shots are used to drive the output pullup and pulldown, thereby minimizing the period when both...
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6653878 |
Low-power output controlled circuit
An output buffer, a slew-rate control circuit, a break-before-make circuit, and a current limited input amplifier are connected as a digital output driver. This provides a simple apparatus and...
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6650574 |
Semiconductor device preventing signal delay among wirings
A plurality of wirings are arranged approximately in parallel. A first amplifier is arranged in one wiring of the two adjacent wirings which are included in the plurality of wirings. The first...
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6650151 |
Process insensitive electronic driver circuitry for integrated RF switching diodes
An electronic driver circuitry for an RF switch diode used in Acoustic Ink Jet Printing (AIP) systems is disclosed The electronic driver circuitry consists of a PMOS transistor and a poly resistor...
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6646470 |
High speed output buffers using voltage followers
An output buffer is provided in the form of a voltage follower having a positive input that receives a reference voltage, a negative input and an output coupled together, and a control input that...
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6642578 |
Linearity radio frequency switch with low control voltage
A field effect transistor used in radio frequency switching applications and having a linear performance characteristic is disclosed. The transistor comprises a plurality of gate lines, a source...
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6642755 |
Bus driver having noise removing circuit formed by pull-up resistor
In a bus driver for driving a bus having first and second power supply terminals, an input terminal for receiving an input signal and an output terminal connected to the bus, a switching element is...
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6639425 |
Process and temperature compensation circuit for integrated RF switching
An electronic driver circuitry for an RF switch diode D 1 used in Acoustic Ink Jet Printing (AIP) systems that compensates and cancels out undesired variations and non-idealities is disclosed. The...
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6639434 |
Low voltage differential signaling systems and methods
A low voltage differential signaling driver is disclosed that is capable of supporting many different LVDS standards or signal level requirements. The low voltage differential signaling driver has...
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6639433 |
Self-configuring output circuit and method
A configurable analog output circuit comprises a current output circuit, a voltage output circuit, and a switch circuit. The current output circuit is capable of producing a current output signal...
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6636087 |
Spike current reducing circuit
Charge accumulated at an output node of an output transistor is discharged to the ground through the output transistor as a spike current. To reduce noise of the spike current, a control signal is...
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6630845 |
Semiconductor integrated circuit and communication device for logic input-state control during and following power-up
The present invention provides a semiconductor integrated circuit device and a communication device incorporating same. Two MOS (strong and weak) devices are connected to each control input of a...
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6628150 |
System and method to speed-up operation of a driver
Transitions (e.g. high to low and/or low to high) associated with operation of the driver are employed to implement control, which can be applied as a pulse in response to an occurrence of the...
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6624669 |
Drive circuit and drive circuit system for capacitive load
A drive circuit includes a first field effect transistor having a source connected to an input terminal and a drain and a gate connected in common, a second field effect transistor having a drain...
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6625516 |
Electric load driving device and method of using the same
In an electric load driving device, in the case of a high-side output mode, an output FET is supplied, when connected with a higher-potential side than a load, at its gate with a boosted voltage...
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6624670 |
High speed voltage mode differential digital output driver with edge-emphasis and pre-equalization
A differential driver includes two feedback loops 20 and 22, and two inverter pairs 24 and 26. The two feedback loops 20 and 22 regulate the source voltages for the two inverter pairs ...
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6621308 |
Supply voltage compensation circuit for high speed LVDS predrive
A circuit that provides a stable predrive to a BiCMOS LVDS output which compensates for supply voltage variations while maintaining a suitably fast signal path. The supply voltage compensation...
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6621360 |
Extended frequency range voltage-controlled oscillator
VCO frequency is continuously variable through a wide frequency range in proportion to a first control voltage VC produced by a PLL containing the VCO. A second control voltage NVC is produced as a...
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6621309 |
Drive circuit
To improve a control circuit for at least one inductive load, comprising a first load branch, which lies between a first voltage terminal and a second voltage terminal and comprises an electronic...
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6614273 |
Ultra-fast voltage drive
An ultra-fast drive circuit ( 40 ) providing a rail-to-rail drive voltage at an output node (N 1 ). A pair of bipolar output transistors (Q 3 , Q 4 ) are selectively driven via a FET drive circuit...
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6611157 |
Differential signal output circuit
A differential signal output circuit is equipped with a first output stage including serially connected transistors QP 1 and QN 1, a second output stage including serially connected transistors...
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6611155 |
Internally and externally biased dual mode 1394 compliant driver
A dual mode output driver circuit within the architecture of a IEEE 1394-1995 IEEE 1394b compliant physical layer (PHY) circuit address the deficiencies of driver incompatibility between the first...
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6608505 |
Ouput buffer circuit
An output buffer circuit is provided, which is capable of obtaining a large drive power when the level of an input signal changes, while allowing a through current to flow in suppressed amounts. A...
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6608506 |
Dynamic termination logic driver with improved impedance control
A driver capable of launching signals into a transmission line and of terminating signals at a receiver end of the transmission line includes within the driver a circuit for controlling the output...
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6605967 |
Low power consumption output driver circuit and supply voltage detection circuit
A semiconductor device has a transistor that controls, according to the resistance of the load externally connected to the output terminal thereof, the current fed to the base of an output-stage...
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6605958 |
Precision on-chip transmission line termination
Methods and apparatus for providing precision on-chip termination of transmission lines are provided which enable the termination of transmission lines using on-chip resistors configured into...
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6603329 |
Systems and methods for on-chip impedance termination
Techniques for on-chip impedance termination are provided that substantially reduce the number of external resistors that are need to provide impedance termination at a plurality of pairs of...
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6603348 |
Center tap level control for current mode differential driver
A feedback mechanism is provided to a current mode differential driver by connecting the center tap of a terminator of the output of the driver through feedback resistors to the gates of a positive...
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6600346 |
Low voltage differential swing (LVDS) signal driver circuit with low PVT and load sensitivity
A low voltage differential swing (LVDS) signal driver having substantially constant output differential voltage (Vod) and substantially constant output offset voltage (Vos) irrespective of...
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6597210 |
Apparatus and method for control and driving BJT used as controlled rectifier
A bipolar junction transistor (BJT) used as a controlled rectifier (CR) that is driven and controlled by an electronic circuit, such that when (in a first mode of operation) the collector-emitter...
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6597209 |
Semiconductor laser driving circuit
A resistor is connected in series with a vertical cavity surface emitting laser, and DC bias electric current is supplied thereto from a DC bias electric current supplying circuit by way of an...
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6593781 |
Power semiconductor device
A power semiconductor device includes an input signal processor circuit to which control signals are input, and power device driving circuits for individually driving power devices based on output...
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6593768 |
Dual termination serial data bus with pull-up current source
An improved USB connection is disclosed that includes a pair of host parallel resistors connected to the USB connection at the host termination and a pair of peripheral parallel resistors connected...
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6590413 |
Self-tracking integrated differential termination resistance
Method and circuitry for implementing an integrated differential termination resistance that is self-tracking. The invention employs a mechanism that automatically tracks variations on a number of...
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6590432 |
Low-voltage differential driver with opened eye pattern
A differential output buffer has a primary stage and a secondary stage that each directly drive differential outputs. Link transistors between the secondary stage and the differential outputs are...
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6590422 |
Low voltage differential signaling (LVDS) drivers and systems
LVDS drivers and analog-to-digital (ADC) systems are provided which facilitate easy alteration (e.g., replacement of a selectable resistor R sel ) of differential current levels and differential...
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6590916 |
Method for fabricating a wave division laser array multiplexer
An IC laser array package is provided wherein standard CMOS integrated circuit (IC) processes are used for fabricating the controller for the laser array and wherein p-channel MOSFET devices are...
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6586974 |
Method for reducing short circuit current during power up and power down for high voltage pad drivers with analog slew rate control
A technique for preventing high current shorts through I/O pads of an integrated circuit during power up and power down is presented. In accordance with the invention, the voltage levels of the...
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6586973 |
Output buffer circuit
An output buffer circuit is provided for maintaining the slew rate of output waveforms of the output signal within a predetermined range regardless of changes of load on the output terminal....
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6583656 |
Differential clock driver with transmission-gate feedback to reduce voltage-crossing sensitivity to input skew
A differential clock driver uses feedback to reduce timing skews between the true and complement differential outputs. Each of the differential outputs has a pull-up driver and a pull-down driver....
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6580286 |
Method and apparatus for active line termination
An improved method and apparatus for active line termination is disclosed. An active termination line driver (ATLD) includes a pair of power amplifiers configured to amplify a transmit signal, the...
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6580309 |
Supply assembly for a LED lighting module
A supply assembly for a LED lighting module, comprising a supply unit to which the LED lighting module can be connected and a burst control unit which is capable of switching the power supply unit...
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6577171 |
Methods and apparatus for preventing inadvertent activation of power devices
A high side circuit includes at least one power device having a first non-drivable terminal connected to a supply voltage, at least one load connected between a second non-drivable terminal of the...
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6577173 |
Inductive load driving circuit
The objective of the invention is to provide an inductive load driving circuit that can prevent occurrence of surge voltage. Output transistor 5 and auxiliary transistor 6 are connected in...
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6573765 |
Input-output buffer circuit and method for avoiding inadvertent conduction of a pull-up transistor
An input-output (I/O) buffer and a method of biasing an I/O buffer that avoids inadvertent conduction of a pull-up transistor included in the buffer when an input signal having a voltage greater...
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6573764 |
Method and apparatus for voltage-mode differential simultaneous bi-directional signaling
A driver/receiver circuit for use at one end of a simultaneous bi-directional differential signal line while being driven at the other end by a similar circuit. The driver/receiver circuit includes...
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6573752 |
High voltage push-pull driver on standard CMOS
A new high voltage, high side driver circuit has been achieved. The circuit comprises, first, a top PFET having gate, drain, source, and bulk. The gate is coupled to a switching signal. The source...
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6573753 |
Microcontroller input/output nodes with both programmable pull-up and pull-down resistive loads and programmable drive strength
The present invention relates to an input/output node in an electronic device which comprises an input/output pin, a plurality of programmable pull-up resistors and a plurality of programmable...
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6570931 |
Switched voltage adaptive slew rate control and spectrum shaping transmitter for high speed digital transmission
An apparatus including a switched voltage bit cell (SVBC) array to receive an input voltage signal, each bit cell of the SVBC array configured to add a voltage to the input voltage signal and a...
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