Patent application number | Description | Published |
20100127763 | SECOND ORDER CORRECTION CIRCUIT AND METHOD FOR BANDGAP VOLTAGE REFERENCE - A system and method are provided for a more accurate bandgap voltage reference wherein the first and second order errors are corrected simultaneously. By using the components included in the correction of the first order error, the second order errors are corrected, advantageously providing less process variability. | 05-27-2010 |
20100244808 | METHOD AND CIRCUIT FOR LOW POWER VOLTAGE REFERENCE AND BIAS CURRENT GENERATOR - A system and method are provided for a PTAT cell with no resistors which can operate at low power, has less sensitivity to process variation, occupies less silicon area, and has low noise. Further, a system and method are provided to scale up the reference voltage and current through a cascade of unit cells. Still further, a system and method are provided for PTAT component to be fine-tuned, advantageously providing less process variability and less temperature sensitivity. | 09-30-2010 |
20120274306 | METHOD AND CIRCUIT FOR LOW POWER VOLTAGE REFERENCE AND BIAS CURRENT GENERATOR - A system and method are provided for a PTAT cell with no resistors which can operate at low power, has less sensitivity to process variation, occupies less silicon area, and has low noise. Further, a system and method are provided to scale up the reference voltage and current through a cascade of unit cells. Still further, a system and method are provided for PTAT component to be fine-tuned, advantageously providing less process variability and less temperature sensitivity. | 11-01-2012 |
20140028376 | PRECISION CMOS VOLTAGE REFERENCE - A system provides for a voltage reference having a small temperature coefficient spread. The voltage reference includes a PTAT voltage trimming circuit that accurately trims the CTAT voltage component of the bandgap type voltage reference. The voltage trimming circuit includes two bipolar transistors that are biased by biasing currents to create a specific base-emitter voltage difference at an output. The bias currents can be digitally trimmed by a current digital-to-analog (“DAC”) converter. This may result in the ability to trim the voltage reference at a single temperature, without the need to trim at two or more temperatures. | 01-30-2014 |
20150160680 | PROPORTIONAL TO ABSOLUTE TEMPERATURE CIRCUIT - A proportional to absolute temperature, PTAT, circuit is provided. By judiciously combining circuit elements it is possible to generate a voltage at an output node of the circuit that is temperature dependent. Such a PTAT circuit can be used as a temperature sensor or can be combined with other temperature dependent circuits to provide a voltage reference. | 06-11-2015 |
20150177771 | LOW DRIFT VOLTAGE REFERENCE - Circuits and method for providing voltage reference circuits that include low drift over time and lower operating voltages are provided. Generally, it is desirable that a reference circuit provide an accurate and precise reference over time. The voltage reference circuits described can provide for good long term stability, operation at lower voltages than prior designs, consistent output voltage with reduced variability due to process changes and mismatches, low noise in the reference voltage, and other advantages. | 06-25-2015 |