Matches 101 - 150 out of 381 < 1 2 3 4 5 6 7 8 >
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7215180 Constant voltage circuit  
A constant voltage circuit is disclosed that includes an output control transistor and an overcurrent protection circuit. The overcurrent protection circuit includes a proportional current...
7215184 Reference-voltage generating circuit  
A disclosed reference-voltage generating circuit includes a supply voltage adjusting circuit for adjusting an external supply voltage Vcc and outputting predetermined constant voltages VA and VB; a...
7211993 Low offset bandgap voltage reference  
The invention provides a bandgap voltage reference circuit that is adapted to provide a ΔV be of sufficiently large value that no amplification is required, and therefore any offset contribution...
7199646 High PSRR, high accuracy, low power supply bandgap circuit  
A bandgap circuit comprising a current generation circuit and a current replication circuit is provided herein. The output current of the current generation circuit is generated as a weighted sum...
7199628 Power supply apparatus for delay locked loop and method thereof  
A DLL voltage supply device for use in a semiconductor memory device includes: a bandgap voltage generating means for generating a bandgap voltage by using an external power supply voltage; a...
7193454 Method and a circuit for producing a PTAT voltage, and a method and a circuit for producing a bandgap voltage reference  
A bandgap voltage reference circuit ( 1 ) produces a bandgap voltage reference (V ref ) on an output terminal ( 3 ) relative to a common ground voltage terminal ( 4 ). The circuit ( 1 ) develops a...
7193403 Current driver  
A current driver that can control variation in the consumed current in conjunction with variation in the setting value of the driving current. The mirror current of transistors Q 2 - 0 to Q 2 - 7 ...
7190212 Power-up and BGREF circuitry  
Circuitry including a BGREF (bandgap voltage reference) comparator including a plurality of MOS transistors that compare a resistor divided supply voltage to a function of at least two process...
7177610 Calibrated low-noise current and voltage references and associated methods  
A low-noise current reference circuitry includes a voltage source, a current source, and a controller. The voltage source generates a reference voltage. The current source provides a low-noise...
7176750 Method and apparatus for fast power-on of the band-gap reference  
A fast power-on band-gap reference circuit includes a buffer, a first band-gap logic, and a second high drive band-gap logic. During power-on of the band-gap reference circuit, both the first...
7173481 CMOS reference voltage circuit  
A CMOS reference voltage circuit, preferably formed on a semiconductor integrated circuit, and outputting a reference voltage having a temperature-independent characteristic, comprises first and...
7170336 Low voltage bandgap reference (BGR) circuit  
A low voltage bandgap reference circuit based on a current summation technique where reference voltages with positive and negative temperature coefficients are generated by a first circuit. These...
7164308 Temperature compensated bandgap voltage reference  
A bandgap voltage reference circuit comprising a first circuit providing a first voltage representative of to V be of a first bipolar transistor, a second circuit providing a second voltage ΔV be...
7164309 Voltage multiplier circuit including a control circuit providing dynamic output voltage control  
A voltage multiplier circuit includes a control circuit and a first voltage multiplier stage. The control circuit receives a power supply voltage and a reference voltage and provides a first output...
7148672 Low-voltage bandgap reference circuit with startup control  
A bandgap reference circuit (BGRC) that is suitable for low-supply voltage applications outputs an adjustable reference voltage. In an operational mode, main currents flow through diodes and are...
7145318 Negative voltage regulator  
A first voltage divider includes a first resistor having a first resistance coupled to a positive voltage reference in series with a second resistor having a second resistance and coupled to...
7142044 Voltage regulator  
The present invention provides a voltage regulator capable of causing a large output current to flow during a heavy load operation, and of making a leakage current from output transistors small...
7138854 Integrated circuit delivering logic levels at a voltage independent from the mains voltage, with no attached regulator for the power section, and corresponding communication module  
The invention concerns an integrated circuit comprising means of delivering, on at least one output, a predetermined output voltage representative of a logic level, means of distributing a mains...
7135913 Reference voltage generating circuit for integrated circuit  
A reference voltage generating circuit has a power supply voltage node to which a driving power supply voltage is intermittently applied. The circuit includes; a first current mirror section...
7132821 Reference current generation system  
Systems are provided for generating and distributing a plurality of reference currents on an integrated circuit. More particularly, an integrated circuit is provided which includes a reference...
7129774 Method and apparatus for generating a reference signal  
A method and apparatus for generating a reference signal involves (i) generating a CTAT voltage and a PTAT voltage, (ii) generating a first digital signal and a second digital signal having an...
7118273 System for on-chip temperature measurement in integrated circuits  
A thermal sensor providing simultaneous measurement of two diodes. A first diode and a second diode are coupled to a first current source and a second current source, respectively. The ratio of the...
7119527 Voltage reference circuit using PTAT voltage  
A voltage reference generator is disclosed that includes a current generator for generating a current that is proportional to absolute temperature (PTAT), the current generator having an internal...
7119398 Power-up and power-down circuit for system-on-a-chip integrated circuit  
A power-up and power-down circuit for an integrated circuit includes a voltage regulator set for a first voltage. A first I/O pad is coupled internally to an input to the voltage regulator and to...
7119528 Low voltage bandgap reference with power supply rejection  
A bandgap reference generation circuit utilizes two feedback loops to maintain the voltage at across the current sources to be essentially the same, such that the reference voltage remains constant...
7116158 Bandgap reference circuit for ultra-low current applications  
A bandgap reference circuit as may be used in ultra-low current applications is provided. An exemplary bandgap circuit can be configured to generate a positive temperature coefficient without the...
7112947 Bandgap reference current source  
Bandgap reference current source for generating a reference current (I REF ) having: at least two bipolar transistors (T 1 , T 2 ), the base terminals (B 1 , B 2 ) of which are interconnected and...
7113025 Low-voltage bandgap voltage reference circuit  
A bandgap reference voltage generating circuit includes a proportional to absolute temperature (PTAT) voltage generating means generating a PTAT voltage. A complementary to absolute temperature...
7108420 System for on-chip temperature measurement in integrated circuits  
A thermal sensor providing simultaneous measurement of two diodes. A first diode and a second diode are coupled to a first current source and a second current source, respectively. The ratio of the...
7109697 Temperature-independent amplifier offset trim circuit  
An operational amplifier having temperature-compensated offset correction. The amplifier includes an operational amplifier circuit, that has a first input field effect transistor (FET) having a...
7098729 Band gap circuit  
A band gap circuit, including a differential amplifier. In response to fluctuation of the voltage on the band gap circuit output terminal VOUT, a potential difference occurs at an inverting input...
7092674 Multi-mode band-gap current reference  
A multi-mode band-gap current reference includes a band-gap current mode module and an adjustable current source module. The band-gap current module provides a band-gap reference current and a...
7084698 Band-gap reference circuit  
A band-gap reference circuit for generation of voltages and currents independent of process, voltage, and temperature includes three inversely proportional to absolute temperature (IPTAT) current...
7078958 CMOS bandgap reference with low voltage operation  
A bandgap reference voltage generator includes, in part, a first closed-loop circuit having a first operational amplifier and adapted to generate a first current with a positive temperature...
7071766 Constant voltage generating circuit  
A constant voltage generating circuit which uses a band gap reference circuit to produce a constant voltage and which is effective at reducing driving voltage and noise. The voltage generating...
7071767 Precise voltage/current reference circuit using current-mode technique in CMOS technology  
A voltage/current reference circuit includes a first bipolar transistor and a second bipolar transistor that exhibit a first voltage drop V BE1 and a second voltage drop V BE2 , respectively. A...
7053596 Constant voltage generating circuit and reference voltage generating circuit  
In a constant voltage generating circuit and a reference voltage generating circuit, a band-gap circuit operates by using, not a power source voltage, but a constant voltage generated in a constant...
7053694 Band-gap circuit with high power supply rejection ratio  
A band-gap circuit is constituted by comprising a feedback control amplifier 31 and MOS transistors 32 and 35 , having two transistors 33 and 34 of which emitter area is different,...
7042279 Reference voltage generating circuit  
A reference voltage generating circuit is provided that includes: a differential amplifier amplifying an input signal and generate a reference voltage; an output amplifier amplifying the reference...
7039384 Low power band-gap current reference  
A low power supply band-gap current reference includes a 1 st P-N junction device, a 2 nd and P-N junction device, a 1 st current source, a 2 nd current source, a 1 st resistor, a 2 nd ...
7034514 Semiconductor integrated circuit using band-gap reference circuit  
A semiconductor device is disclosed including a current generator circuit that generates a first current substantially proportional to an absolute temperature, the first current being determined by...
7023181 Constant voltage generator and electronic equipment using the same  
A constant voltage generator is comprised of a band gap reference circuit, a current supply circuit, a starting circuit and a voltage-current conversion circuit, and the starting circuit is further...
7019584 Output stages for high current low noise bandgap reference circuit implementations  
A bandgap reference circuit can use various output stages to implement a controlled feedback method of sensing and supplying the needed load current through a sensing network. A small amount of...
6998830 Band-gap reference  
A reference circuit includes a band-gap core, two current sources, and an amplifier circuit that are arranged in cooperation. The band-gap core circuit is biased by current that is supplied from a...
6998902 Bandgap reference voltage circuit  
A bandgap reference voltage circuit includes a constant-current circuit, a reference voltage output circuit generating a reference voltage according to the constant current, a power supply voltage...
6995587 Low voltage low power bandgap circuit  
Disclosed are methods and circuits for providing a bandgap reference in an electronic circuit having a supply voltage and ground. The methods include steps for generating a bandgap reference...
6987416 Low-voltage curvature-compensated bandgap reference  
A subtractor is connected between a p-channel bandgap reference unit and an n-channel bandgap reference unit. The subtractor includes two NPN transistors connected to the p-channel bandgap...
6982590 Bias current generating circuit, laser diode driving circuit, and optical communication transmitter  
A bias current generating circuit including a bandgap reference circuit which outputs a first voltage which is constant, and a second voltage which changes in accordance with a temperature. The...
6956304 Integrated circuit and method for controlling a power supply thereof  
Integrated circuit, which is supplied externally by a supply voltage, having at least one useful circuit and a power supply for the at least one useful circuit which comprises a plurality of power...
6957278 Reference -switch hysteresis for comparator applications  
The present invention concerns an apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate a reference output voltage in response to a plurality of...
Matches 101 - 150 out of 381 < 1 2 3 4 5 6 7 8 >