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6998898 |
Programmable front end for a receiving channel
The present invention discloses a circuit used to couple an input signal to an amplifier circuit. The circuit may contain a diode bridge coupled to an adjustable bias circuit. The current through...
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6995598 |
Level shifter circuit including a set/reset circuit
The present invention discloses a level shifter circuit ( 20 ) comprising a serially coupled first device (M 3 ) and second device (M 5 ), a serially coupled third device (M 4 ) and fourth device...
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6987412 |
Sense amplifying latch with low swing feedback
A system is presented for latching and amplifying a capacitively coupled inter-chip communication signal that operates by receiving an input signal on a capacitive receiver pad and feeding the...
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6985021 |
Circuits and techniques for conditioning differential signals
Circuitry is provided that conditions a differential input signal such that when the signal is received by a multi-standard differential input buffer, the buffer is able to process the conditioned...
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6980194 |
Amplitude conversion circuit for converting signal amplitude
A level shifter includes first and second P-type TFTs for latching a level of first and second output nodes, first and second N-type TFTs for setting the level of the first and second output nodes,...
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6980035 |
Auto-detect level shifter for multiple output voltage standards
A technique and circuit implementation are described for automatically detecting a change in a power supply voltage and selectively reconfiguring a circuit for optimized performance at the changed...
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6977540 |
High-speed isolated port
A port isolator apparatus includes an optical isolator circuit that electrically isolates an input circuit from a high-speed output circuit. The input circuit uses a transistor to control the...
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6977523 |
Voltage level shifting circuit
The voltage level shifting circuit includes a complimentary signal input circuit having a pair of MOSs of a first withstand voltage and a load circuit having a pair of MOSs of a second withstand...
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6975155 |
Level shifting circuit and method
Described is a level shifting device for high-frequency operation. The level shifting device includes first through fifth transistors. The first transistor has its gate connected to an input...
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6967518 |
High voltage level shifting IC with under-ground voltage swing withstanding capability
A level shifting circuit provides a reference bias voltage to permit signal transfer between two circuits with different common voltage reference levels. The bias voltage is less than a common...
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6963231 |
Insulating device for a system on chip (SOC)
An insulating device for system on chip (SOC). The SOC has a first circuit region powered by a main power source and a second circuit region powered by a real-time power source. In the insulating...
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6963238 |
Level shift circuit
A high-precision and high-performance level shift circuit, which is not adversely influenced by an offset error owned by an operational amplifier. Two sets of resistors ( 4 o ) and ( 4 p ) having...
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6960946 |
Low power, up full swing voltage CMOS bus receiver
A CMOS bus receiver for converting a reduced voltage swing input signal at an input node to a higher voltage swing output signal at an output node. The receiver includes a first and a second MOS...
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6960953 |
Semiconductor circuit device
A semiconductor circuit device, in which an output device is driven by inputting a direct current voltage source having a predetermined potential difference on the high potential side relative to a...
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6956401 |
Differential input buffers with elevated power supplies
Input buffer circuitry for handling high-speed differential input signals on an integrated circuit is provided. The input buffer circuitry may use two parallel differential input buffers with...
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6954099 |
Level shifter without dutycycle distortion
The invention involves a voltage converter device ( 101 a , 101 b ) for converting a signal (in) at an initial voltage level (vint) into a signal (DatoV) at a second voltage level (vint) differing...
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6946892 |
Level transforming circuit
A level trasnforming circuit includes a first CMOS circuit, a first intermediate circuit, a second intermediate circuit, a second CMOS circuit, a seventh p-channel type MOS transistor, and an...
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6946876 |
Semiconductor integrated circuit device and electronic system
Noise of a low frequency band, generated inside a logic circuit, is remarkably reduced. A semiconductor integrated circuit device is provided with: a high voltage supply circuit generating, from a...
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6946893 |
Level shift circuit and semiconductor integrated circuit
A level conversion circuit is composed of a level shift circuit for supplying a level-converted signal in the same phase as the input signal and a signal in the reverse phase thereto and a...
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6946890 |
Low noise level shifting circuits and methods and systems using the same
A driver circuit includes an operational amplifier having an input and an output coupled by a feedback element. A voltage level shifter generates a voltage drop from the operational amplifier...
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6940333 |
High-to-low level shifter
A high-to-low level shifter, coupled to a first external signal, for transforming the first external signal into an internal signal, wherein the first external signal substantially switches between...
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6940332 |
Level shift circuit having control circuits for high speed, area saving and power saving
A level shift circuit realizes a high-speed and power-saved operation particularly when the input voltage is at a low level. The level shift circuit includes a first gate voltage control circuit...
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6933755 |
Output driving circuit for maintaining I/O signal duty ratios
Output driving circuit including at least one or more than one level shifter for receiving an input signal to be provided to an outside of an integrated circuit and shifting a voltage level of the...
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6930518 |
Level shifter having low peak current
A level shifter changes an input signal whose level changes between a first voltage level and a ground voltage level into an output signal whose level changes between a second voltage level and the...
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6930530 |
High-speed receiver for high I/O voltage and low core voltage
A receiver circuit. A reference voltage circuit is supplied with a first power supply voltage for outputting a reference voltage that is a mid-point voltage between the first power supply voltage...
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6927606 |
Low voltage differential to single-ended converter
Method and circuitry for converting a differential logic signal to a single-ended logic signal eliminate slower PMOS transistors and speed up the conversion process. In specific embodiments...
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6927617 |
Integrated circuit
In a level shift circuit for converting a level signal of several volts into a signal of a high level and transmitting the high-level signal, as a voltage reduction unit for reducing an overvoltage...
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6927616 |
Integrated circuit and method for interfacing two voltage domains using a transformer
An integrated circuit designed to reduce on-chip noise coupling. In one embodiment, circuit ( 60 ) includes the following: a circuit transformer ( 62 ) capable of converting a noise sensitive input...
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6924689 |
Level shifter reference generator
A core voltage to input output voltage level shifter of the type that uses a reference voltage source to generate a reference voltage to limit a drain voltage on at least one voltage sensitive node...
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6922095 |
Voltage level shifter implemented by essentially PMOS transistors
A voltage level shifter includes a front stage circuit periodically generating a first control signal and a second control signal in response to a first input clock signal and a second input clock...
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6919752 |
Level shifter and latch with the same built in
A level shifter includes a controller for selectively using a first power supply or a second power supply in accordance with an input voltage to apply a voltage to a first node, wherein, the level...
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6919743 |
Drive circuit with low current consumption
A drive circuit includes a first level shift circuit outputting a potential higher than an input potential by a prescribed voltage; a pull-up circuit outputting to an output node a potential lower...
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6917235 |
Low voltage circuit for interfacing with high voltage analog signals
An integrated circuit (IC) uses a current source coupled to means for current-to-voltage conversion to reject the unwanted high voltage signal and detects the wanted small voltage signal. In...
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6917236 |
Method and apparatus for level shifting
A level-shifter architecture with high-voltage driving capability and extremely low power consumption, exploiting dynamic control of the charge on the gate electrodes of the high-voltage output...
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6914470 |
Level shifting circuit
The present invention provides a circuit to shift the level of an arbitrary input signal level higher than the power supply voltage to a reference logic level controlled by the power supply voltage...
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6911860 |
On/off reference voltage switch for multiple I/O standards
A switch circuit selectively provides a reference voltage, needed in some I/O standards, to a logic device. The circuit receives a dedicated power supply that is different from the device's I/O...
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6909417 |
Shift register and image display apparatus using the same
A level shifter 13 is provided for each of SR flip flops F 1 constituting a shift register 11. The level shifter 13 increases a voltage of a clock signal CK. This arrangement reduces a...
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6903581 |
Output buffer for high and low voltage bus
Briefly, in accordance with one embodiment of the invention, an integrated circuit includes: an output buffer. The output buffer includes semiconductor devices coupled to provide circuit...
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6903576 |
Voltage level translator for translating low to high voltage levels in digital integrated circuits
An improved low voltage to high voltage translator for digital electronic circuits providing reduced rise times, fall times and transition times that remain independent of operating conditions....
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6900662 |
Level translator circuit for power supply disablement
A level translator circuit for use between a transmitting voltage potential circuit and a receiving voltage potential circuit is disclosed. The translator circuit includes a first transistor...
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6897705 |
Semiconductor device using current mirror circuit
The semiconductor device includes a first current mirror circuit combining analog power sources and digital power sources to receive small amplitude signals and constant-voltage input signals, a...
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6897492 |
Power device with bi-directional level shift circuit
A gate driver includes a control signal generator having a first input and configured to output a gate control signal to a power semiconductor switch. The gate control signal generator is provided...
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6882179 |
Differential CMOS logic with dynamic bias
A CMOS circuit arrangement. In this arrangement, relatively thick oxide devices are fabricated along with relatively thin oxide devices on the same chip. High speed logic circuits are fabricated...
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6882209 |
Method and apparatus for interfacing mixed voltage signals
A buffer circuit is used to convert signals of a first preselected voltage level to a second preselected voltage level. A pass gate transistor has a gate, source, and drain and is adapted to...
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6879191 |
Voltage mismatch tolerant input/output buffer
Embodiments of the invention include a data buffer for connecting a core of a data circuit to a data pad. External devices may couple to the data pad even if they have a different power supply...
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6873189 |
I/O buffer circuit
In an I/O buffer circuit for solving problems occurred due to I/O voltage level difference, the I/O buffer circuit includes a logical controller for generating an enable signal and data according...
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6870407 |
Thin gate oxide output drive
An output driver circuit including first and second cascoded scaled P-channel devices coupled to first and second cascoded scaled N-channel devices. The P-channel devices are coupled together at a...
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6870402 |
Transition-aware signaling
An improved receiver circuit for use on an integrated chip is disclosed. The receiver circuit is interposed in an interconnect line between electrical components in an integrated circuit. The...
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6864736 |
High-voltage inverter amplifier device
An intermediate stage of a high-voltage inverting amplifier includes a drive transistor (MB 5 ) of the thin-gate-oxide high-voltage MOS type connected between a supply terminal and the gate of an...
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6864718 |
Charge pump level converter (CPLC) for dual voltage system in very low power application
Recent efforts are underway to develop LSI circuits that operate at power supply voltages of 1-V or lower. It is a desire that this low core voltage circuits interface to 3.3-V I/O supply. A charge...
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