Matches 51 - 100 out of 381 < 1 2 3 4 5 6 7 8 >
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7471152 Automatic gain control and tuned low noise amplifier for process-independent gain systems  
A tuned low-noise amplifier is disclosed. A device in accordance with the present invention comprises a first current source, a second current source, a comparator, coupled to the first current...
7463012 Bandgap reference circuits with isolated trim elements  
A bandgap reference circuit utilizes differential transistors to generate a temperature-independent bandgap voltage. In place of conventional trim elements that are connected in parallel to and...
7459961 Voltage supply insensitive bias circuits  
A voltage-insensitive circuit includes a second circuit, and a biasing means for providing a constant bias current to the second circuit, the bias current being insensitive to power fluctuations of...
7456679 Reference circuit and method for generating a reference signal from a reference circuit  
A reference circuit includes: (a) a first reference circuit having a reference signal and a ΔV BE loop; and (b) a modification circuit using a first voltage to change a first current in the ΔV...
7446598 Bias circuits  
A bias circuit for use in bandgap voltage reference circuits and temperature sensors comprises a pair of transistors (Q, Q2), the first of which (Q1) is arranged to be biased at an emitter current ...
7446599 Reference voltage generator  
A reference voltage generator is provided. The reference voltage generator includes a bandgap reference circuit, a level shifter and a voltage divider. The bandgap reference circuit includes a...
7443227 Adjusting circuit  
A programmable detection adjuster is disclosed. The programmable detection adjuster comprises a bandgap and an adjusting circuit. The bandgap comprises a power input terminal, a voltage output...
7443231 Low power reference voltage circuit  
A circuit for providing a reference voltage includes a bandgap reference circuit, the bandgap reference circuit providing a first reference voltage and a data storage. The data storage stores a...
7436244 Circuit for reference current and voltage generation  
A circuit for reference current and voltage generation is provided. The circuit comprises a current bias circuit and a voltage reference circuit. Wherein, the current bias circuit receives an...
7436243 Integrated circuits with on-chip AC noise suppression  
On-chip AC noise suppression is provided for a target circuit within an integrated circuit chip. A power supply line filter is provided in the power supply line that feeds the target circuit. The...
7436245 Variable sub-bandgap reference voltage generator  
A sub-bandgap reference voltage generator, generates a pair of variable voltages one having a positive temperature coefficient and one having a negative voltage coefficient. The pair of voltages...
7414458 Power gating circuit of a signal processing system  
A power gating circuit of a signal processing system includes a low dropout linear regulator, a control circuit, and an output circuit. The low dropout linear regulator includes a first transistor,...
7411443 Precision reversed bandgap voltage reference circuits and method  
A circuit producing a reversed bandgap reference voltage circuit V RBG includes first and second resistors coupled as a voltage divider between ground and a first conductor, a base of a first...
7408400 System and method for providing a low voltage bandgap reference circuit  
A system and method are disclosed for providing a low voltage bandgap reference circuit that provides a substantially constant output voltage over a range of values of temperature. For example, the...
7400187 Low voltage, low Z, band-gap reference  
The present invention relates to a low impedance band-gap voltage reference circuit which comprises a band-gap reference circuit, a buffer circuit to reduce the impedance and related noise...
7400123 Voltage regulator with variable drive strength for improved phase margin in integrated circuits  
A voltage supply circuit having variable drive strength can optionally be used to provide improved phase margin in an integrated circuit. A bandgap circuit drives an operational amplifier, with the...
7385437 Digitally tunable high-current current reference with high PSRR  
A digitally tunable low voltage CMOS current reference is disclosed. A tunable current reference circuit is provided that includes a current source circuit that is coupled to a power supply...
7382305 Reference generators for enhanced signal converter accuracy  
Reference generator embodiments are provided with low output impedances to enhance reference stability in the presence of varying loads. The generators are structured to provide these impedances in...
7372321 Robust start-up circuit and method for on-chip self-biased voltage and/or current reference  
A reference circuit can include a reference section that provides a reference value for other circuits of an integrated circuit and can be enabled and disabled in response to an enable signal. The...
7372244 Temperature reference circuit  
The invention provides a temperature reference circuit that is adapted to provide a ΔV be of sufficiently large value that no amplification is required, and therefore any offset contribution is...
7365589 Bandgap reference circuit  
A bandgap reference circuit, taking two or more power supplies as the input power supply for outputting a reference voltage, includes a first reference circuit, a second reference circuit, a power...
7348834 Selecting a reference voltage suitable to load functionality  
An integrated circuit capable of detecting or generating a reference voltage suitable to a functionality of an electronic device is disclosed. The integrated circuit includes a plurality of...
7321256 Highly reliable and zero static current start-up circuits  
A bandgap reference voltage circuit includes a bandgap circuit, a start-up circuit, and a recovery circuit. Upon device power-on, the start-up circuit provides a start-up current to initialize the...
7315194 Booster circuit  
A booster circuit includes a first booster unit having a first output terminal from which a boosted voltage is output. The first output terminal is connected to an external output terminal. A...
7307468 Bandgap system with tunable temperature coefficient of the output voltage  
A voltage supply circuit for generating a composite bandgap reference voltage includes a single bandgap reference voltage circuit and a select circuit. The bandgap reference circuit has a first...
7301389 Curvature-corrected band-gap voltage reference circuit  
This band-gap circuit overcomes the deficiencies of conventional band-gap circuits by compensating for higher order temperature effects, thereby increasing accuracy. A first resistor network...
7302598 Apparatus to reduce the internal frequency of an integrated circuit by detecting a drop in the voltage and frequency  
A semiconductor integrated circuit is disclosed that operates in synch with a clock signal supplied from an external source, and by a voltage supplied by a power supply. The circuit includes a...
RE39918 Direct current sum bandgap voltage comparator  
A direct current sum bandgap voltage comparator for detecting voltage changes in a power supply. The direct current sum bandgap voltage comparator includes a summing node, current sources connected...
7288926 Internal power voltage generator for reducing current consumption  
An internal voltage generator and method are provided, the internal voltage generator including a first reference voltage generator for receiving an external voltage and providing a first reference...
7288983 Method and circuit for providing a temperature dependent current source  
A programmable temperature compensation circuit having a bandgap circuit for generating a first temperature-independent voltage reference signal, V REF and a second temperature-dependent voltage...
7286002 Circuit and method for startup of a band-gap reference circuit  
A circuit and method for starting up a band-gap reference circuit. In one example, a startup circuit compares a Vbg voltage output of a band-gap reference circuit to a voltage (such as Vbe) across...
7276890 Precision bandgap circuit using high temperature coefficient diffusion resistor in a CMOS process  
Disclosed are bandgap circuits that use a resistive divider circuit to modulate the gate voltage of a reference source transistor. The reference voltage transistor is modulated at the base by a...
7274250 Low-voltage, buffered bandgap reference with selectable output voltage  
A temperature-independent voltage reference containing two independent bias circuits powered by the reference voltage, each bias circuit containing components with an exponential dependence of...
7259614 Voltage sensing circuit  
An auto voltage sense circuit uses voltage controlled current sources to generate a desired reference voltage level that closely tracks the variations and changes of a first voltage level and a...
7253598 Bandgap reference designs with stacked diodes, integrated current source and integrated sub-bandgap reference  
The performance of a bandgap reference circuit is improved by increasing the ΔVBE, and thereby correspondingly decreasing the input sensitivity of the error amplifier in the control loop. The...
7248099 Circuit for generating reference current  
Disclosed herein is a circuit for generating reference current. The circuit for generating reference current comprises a current providing unit for generate a PTAT current, mirroring the PTAT...
7248098 Curvature corrected bandgap circuit  
An apparatus and method provide for curvature corrected temperature variations in a band-gap reference circuit. The apparatus includes a band-gap cell, an IPTAT circuit, a resistor, and a feedback...
7242261 Voltage control for clock generating circuit  
An apparatus is provided that includes a clock distribution network, a plurality of distributed oscillators provided about the clock distribution network so as to provide clock signals on the clock...
7242240 Low noise bandgap circuit  
The bandgap circuit comprising a plurality of cells that are sequentially connected to provide summation of ΔV BE of each cell, with low noise. Each cell is formed of a plurality of NPN bipolar...
7236048 Self-regulating process-error trimmable PTAT current source  
A current source for generating a PTAT current using two bipolar transistors with an 1:A emitter area ratio implements a split resistor architecture to cancel mismatch errors in the current mirror...
7236047 Band gap circuit  
A band gap circuit includes a voltage generating circuit, and a first and a second switched capacitor circuits (SCC). Operational amplifier in the first and the second SCC are connected though a...
7236004 Low voltage differential signaling with output differential voltage to output offset voltage tracking  
Apparatus and method for providing reference voltages for differential signaling with tracking of output differential voltage relative to output offset voltage are described. A swing reference...
7233196 Bandgap reference voltage generator  
An electrical circuit is disclosed that is capable of improving the power supply rejection ratio of a standard bandgap reference while maintaining the temperature coefficient of the standard...
7230473 Precise and process-invariant bandgap reference circuit and method  
A voltage generation circuit generates a reference voltage using a bandgap reference. A countering circuit is included to adaptively counter for any deviations caused in a bandgap reference voltage...
7227401 Resistorless bias current generation circuit  
A bias current generating circuit generates a reliable and consistent bias current, irrespective of variation in applied power, process and temperature. In one embodiment, the bias current...
7224209 Speed-up circuit for initiation of proportional to absolute temperature biasing circuits  
A PTAT biasing circuit for use in a bandgap referenced voltage source includes a startup sub-circuit. Prior to activation of a power up indication signal, the speedup circuit forces the PTAT...
7224210 Voltage reference generator circuit subtracting CTAT current from PTAT current  
A voltage reference generator generates a stable reference voltage that is less than the bandgap voltage of silicon for power supply voltages less than 2V, yet provides sufficient voltage headroom...
7218166 Current stabilization circuit, current stabilization method, and solid-state imaging apparatus  
A circuit for stabilizing an electric current includes a constant voltage supplying circuit configured to supply a constant voltage, and a current generating circuit coupled to the constant voltage...
7218167 Electric reference voltage generating device of improved accuracy and corresponding electronic integrated circuit  
The present invention relates to a device for generation of a reference electrical voltage. The device includes a first current generator outputting a current proportional to temperature. The first...
7215183 Reference voltage generator circuit  
A reference voltage generator circuit includes: a band gap circuit that outputs a predetermined voltage to an output terminal; a plurality of current mirror circuits, a gate electrode of at least...
Matches 51 - 100 out of 381 < 1 2 3 4 5 6 7 8 >