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公开(公告)号：US09658637B2
公开(公告)日：2017-05-23
申请号：US14182877
申请日：2014-02-18
Applicant: Analog Devices Global
Inventor： Stefan Marinca
Abstract: A proportional to absolute temperature (PTAT) circuit is provided. By judiciously combining circuit elements into two or more cell it is possible to effectively dump bias current into impedance resistive element of a first cell from other cells of the circuit. As a result the circuit as a whole can operate with smaller resistive elements and therefore occupy less area when implemented in silicon. It is also possible to reduce the supply current that is required for providing specific output currents or voltages.
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公开(公告)号：US09600014B2
公开(公告)日：2017-03-21
申请号：US14272061
申请日：2014-05-07
Applicant: ANALOG DEVICES GLOBAL
Inventor： Stefan Marinca , Gabriel Banarie
Abstract: The present disclosure relates to a method and apparatus for generating a voltage reference. More particularly the present disclosure relates to a methodology and circuitry configured to provide an output signal that combines a proportional to absolute temperature component with a complimentary to absolute temperature component to generate a stable output which is not temperature dependent.
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3.发明申请公开(公告)号：US20180059707A1
公开(公告)日：2018-03-01
申请号：US15248694
申请日：2016-08-26
Applicant: Analog Devices Global
Inventor： Stefan Marinca
IPC: G05F3/26
CPC classification number: G05F3/267
Abstract: The present disclosure relates to a PTAT voltage reference circuit and a temperature independent voltage reference circuit in which the effect of transistor base currents on the circuit output is compensated for. This is achieved by a pair of compensation resistors. The base current from one of the pair of transistors is used to increase the voltage drop across one of the compensation resistors. The base current from the other of the pair of transistors is used to decrease the voltage drop across another of the compensation resistors, by an equal amount. The compensation resistors are connected in series with the resistor which reflects the difference in base-emitter voltage (ΔVBE). The circuit output is measured across the series connected resistors. As such, the base currents are compensated for at the output.
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Patent Agency Ranking
公开(公告)号：US09811107B2
公开(公告)日：2017-11-07
申请号：US14789477
申请日：2015-07-01
Applicant: Analog Devices Global
Inventor： Stefan Marinca
CPC classification number: G05F3/267
Abstract: A bias current generators that may be implemented in low power environments is described. The current generator can be implemented without using resistors and may be used to generate reference currents and voltages. It may also be used to generate voltage references where the output of the circuit is to at least a first order temperature independent.
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公开(公告)号：US10310539B2
公开(公告)日：2019-06-04
申请号：US15248694
申请日：2016-08-26
Applicant: Analog Devices Global
Inventor： Stefan Marinca
Abstract: The present disclosure relates to a PTAT voltage reference circuit and a temperature independent voltage reference circuit in which the effect of transistor base currents on the circuit output is compensated for. This is achieved by a pair of compensation resistors. The base current from one of the pair of transistors is used to increase the voltage drop across one of the compensation resistors. The base current from the other of the pair of transistors is used to decrease the voltage drop across another of the compensation resistors, by an equal amount. The compensation resistors are connected in series with the resistor which reflects the difference in base-emitter voltage (ΔVBE). The circuit output is measured across the series connected resistors. As such, the base currents are compensated for at the output.
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公开(公告)号：US20170255221A1
公开(公告)日：2017-09-07
申请号：US15464056
申请日：2017-03-20
Applicant: Analog Devices Global
Inventor： Stefan Marinca , Gabriel Banarie
Abstract: The present disclosure relates to a method and apparatus for generating a voltage reference. More particularly the present disclosure relates to a methodology and circuitry configured to provide an output signal that combines a proportional to absolute temperature component with a complimentary to absolute temperature component to generate a stable output which is not temperature dependent.
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公开(公告)号：US09600015B2
公开(公告)日：2017-03-21
申请号：US14531541
申请日：2014-11-03
Applicant: Analog Devices Global
Inventor： Stefan Marinca
IPC: G05F3/30
CPC classification number: G05F3/30
Abstract: Early effects are intrinsically present in bipolar junction transistors (BJTs). Described are examples of complimentary to absolute temperature (CTAT) and proportional to absolute temperature (PTAT) cells that reduce errors associated with the Early effects that would otherwise be present.
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公开(公告)号：US09448579B2
公开(公告)日：2016-09-20
申请号：US14136774
申请日：2013-12-20
Applicant: Analog Devices Global
Inventor： Stefan Marinca
IPC: G05F3/18
CPC classification number: G05F3/185
Abstract: 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.
Abstract translation: 提供用于提供包括随时间的低漂移和较低工作电压的电压参考电路的电路和方法。 通常，期望参考电路随时间提供精确和精确的参考。 所描述的电压参考电路可以提供良好的长期稳定性，在比以前的设计更低的电压下操作，一致的输出电压由于过程变化和不匹配而降低的可变性，参考电压中的低噪声以及其它优点。
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