The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Franco Maloberti - One of the best experts on this subject based on the ideXlab platform.
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ISCAS - An 11 Bit Sub-Ranging SAR ADC with Input Signal Range of Twice Supply Voltage
2007 IEEE International Symposium on Circuits and Systems, 2007Co-Authors: Devrim Yilmaz Aksin, Mohammad Al-shyoukh, Franco MalobertiAbstract:Analog-to-digital converters are one of the essential components in modern highly integrated power management ICs (PMICs). Although, the conversion time and resolution requirements are relatively easy to achieve, the requirements such as extended input Signal Range exceeding the system supply level, low power consumption for higher system efficiency, and resilience to heavy substrate and supply noise complicate the design of the ADC. In this paper, an 11 bit sub-ranging SAR analog to digital converter designed for power management systems is presented. The supply voltage and the reference voltage of the converter are both equal to 2.75 V while any of its 8 input channels can vary between 0-5.5 V Range (or twice the reference voltage). The integral and differential nonlinearities of the converter are 0.38 and 0.45 LSB respectively. The ADC draws only 140 muA of quiescent current and has a conversion time of 10 mus.
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a bootstrapped switch for precise sampling of inputs with Signal Range beyond supply voltage
Custom Integrated Circuits Conference, 2005Co-Authors: Devrim Yilmaz Aksin, Mohammad Alshyoukh, Franco MalobertiAbstract:Bootstrapped switches are used in a variety of applications including DC-DC converters, pipelined analog-to-digital converters and high voltage switches and drivers. Current work on highly integrated power management applications often requires the ability to measure voltage quantities that exceed the supply voltage in magnitude. This is primarily due to a basic need to maximize efficiency by running the power management IC on as low supply voltage as possible, while still maintaining the ability to sample and measure quantities from the surroundings that could well exceed the battery voltage. In this paper a new bootstrapped switch is presented. The switch enables the precise sampling of input Signals well greater than the chip supply voltage with no static power consumption, and without activating on-chip parasitic body diodes. The bootstrapped switch, presented here, is designed to sample an input Signal with a 0-5.5 V Range at a supply voltage of 2.75 V. Measurement data shows functionality for a 0-6 V input Signal Range with a supply voltage as low as 1.2 V
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CICC - A bootstrapped switch for precise sampling of inputs with Signal Range beyond supply voltage
Proceedings of the IEEE 2005 Custom Integrated Circuits Conference 2005., 1Co-Authors: Devrim Yilmaz Aksin, Mohammad Al-shyoukh, Franco MalobertiAbstract:Bootstrapped switches are used in a variety of applications including DC-DC converters, pipelined analog-to-digital converters and high voltage switches and drivers. Current work on highly integrated power management applications often requires the ability to measure voltage quantities that exceed the supply voltage in magnitude. This is primarily due to a basic need to maximize efficiency by running the power management IC on as low supply voltage as possible, while still maintaining the ability to sample and measure quantities from the surroundings that could well exceed the battery voltage. In this paper a new bootstrapped switch is presented. The switch enables the precise sampling of input Signals well greater than the chip supply voltage with no static power consumption, and without activating on-chip parasitic body diodes. The bootstrapped switch, presented here, is designed to sample an input Signal with a 0-5.5 V Range at a supply voltage of 2.75 V. Measurement data shows functionality for a 0-6 V input Signal Range with a supply voltage as low as 1.2 V
M. Al-gahtani - One of the best experts on this subject based on the ideXlab platform.
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ISCAS (1) - Improved logarithmic converter based on a transconductance feedback amplifier
ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196), 1Co-Authors: Brett Wilson, M. Al-gahtaniAbstract:The traditional logarithmic amplifier configuration based on a voltage operational amplifier with a diode-connected transistor in its feedback loop displays a significantly reduced bandwidth at lower Signal levels. Replacing the operational amplifier by a transconductance feedback amplifier overcomes this problem completely and offers constant-bandwidth operation throughout the full Signal Range.
Devrim Yilmaz Aksin - One of the best experts on this subject based on the ideXlab platform.
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25v sampling switch for power management data converters in 0 35µm cmos with dnmos
European Solid-State Circuits Conference, 2009Co-Authors: Devrim Yilmaz Aksin, Ilter OzkayaAbstract:A new high-voltage bootstrapped sampling switch with input Signal Range exceeding 11 times its supply voltage is presented. Proposed switch occupies a silicon area of 250µm by 160µm in 0.35µm twin-well CMOS process with drain extended NMOS (DNMOS) capability. The switch safe input Signal Range is restricted only by the DNMOS drain terminal breakdown voltage, i.e. 50V . Implemented switch can reliably track and hold 20V PP Signal on 15V DC at 1MS/s with 2.2V supply without forward biasing any parasitic diode. A designed switched capacitor attenuator utilizing proposed high voltage switch can process 20V PP differential input reliably.
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ESSCIRC - 25V sampling switch for power management data converters in 0.35µm CMOS with DNMOS
2009 Proceedings of ESSCIRC, 2009Co-Authors: Devrim Yilmaz Aksin, Ilter OzkayaAbstract:A new high-voltage bootstrapped sampling switch with input Signal Range exceeding 11 times its supply voltage is presented. Proposed switch occupies a silicon area of 250µm by 160µm in 0.35µm twin-well CMOS process with drain extended NMOS (DNMOS) capability. The switch safe input Signal Range is restricted only by the DNMOS drain terminal breakdown voltage, i.e. 50V . Implemented switch can reliably track and hold 20V PP Signal on 15V DC at 1MS/s with 2.2V supply without forward biasing any parasitic diode. A designed switched capacitor attenuator utilizing proposed high voltage switch can process 20V PP differential input reliably.
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ISCAS - An 11 Bit Sub-Ranging SAR ADC with Input Signal Range of Twice Supply Voltage
2007 IEEE International Symposium on Circuits and Systems, 2007Co-Authors: Devrim Yilmaz Aksin, Mohammad Al-shyoukh, Franco MalobertiAbstract:Analog-to-digital converters are one of the essential components in modern highly integrated power management ICs (PMICs). Although, the conversion time and resolution requirements are relatively easy to achieve, the requirements such as extended input Signal Range exceeding the system supply level, low power consumption for higher system efficiency, and resilience to heavy substrate and supply noise complicate the design of the ADC. In this paper, an 11 bit sub-ranging SAR analog to digital converter designed for power management systems is presented. The supply voltage and the reference voltage of the converter are both equal to 2.75 V while any of its 8 input channels can vary between 0-5.5 V Range (or twice the reference voltage). The integral and differential nonlinearities of the converter are 0.38 and 0.45 LSB respectively. The ADC draws only 140 muA of quiescent current and has a conversion time of 10 mus.
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a bootstrapped switch for precise sampling of inputs with Signal Range beyond supply voltage
Custom Integrated Circuits Conference, 2005Co-Authors: Devrim Yilmaz Aksin, Mohammad Alshyoukh, Franco MalobertiAbstract:Bootstrapped switches are used in a variety of applications including DC-DC converters, pipelined analog-to-digital converters and high voltage switches and drivers. Current work on highly integrated power management applications often requires the ability to measure voltage quantities that exceed the supply voltage in magnitude. This is primarily due to a basic need to maximize efficiency by running the power management IC on as low supply voltage as possible, while still maintaining the ability to sample and measure quantities from the surroundings that could well exceed the battery voltage. In this paper a new bootstrapped switch is presented. The switch enables the precise sampling of input Signals well greater than the chip supply voltage with no static power consumption, and without activating on-chip parasitic body diodes. The bootstrapped switch, presented here, is designed to sample an input Signal with a 0-5.5 V Range at a supply voltage of 2.75 V. Measurement data shows functionality for a 0-6 V input Signal Range with a supply voltage as low as 1.2 V
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CICC - A bootstrapped switch for precise sampling of inputs with Signal Range beyond supply voltage
Proceedings of the IEEE 2005 Custom Integrated Circuits Conference 2005., 1Co-Authors: Devrim Yilmaz Aksin, Mohammad Al-shyoukh, Franco MalobertiAbstract:Bootstrapped switches are used in a variety of applications including DC-DC converters, pipelined analog-to-digital converters and high voltage switches and drivers. Current work on highly integrated power management applications often requires the ability to measure voltage quantities that exceed the supply voltage in magnitude. This is primarily due to a basic need to maximize efficiency by running the power management IC on as low supply voltage as possible, while still maintaining the ability to sample and measure quantities from the surroundings that could well exceed the battery voltage. In this paper a new bootstrapped switch is presented. The switch enables the precise sampling of input Signals well greater than the chip supply voltage with no static power consumption, and without activating on-chip parasitic body diodes. The bootstrapped switch, presented here, is designed to sample an input Signal with a 0-5.5 V Range at a supply voltage of 2.75 V. Measurement data shows functionality for a 0-6 V input Signal Range with a supply voltage as low as 1.2 V
Brett Wilson - One of the best experts on this subject based on the ideXlab platform.
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improved logarithmic converter based on a transconductance feedback amplifier
International Symposium on Circuits and Systems, 2001Co-Authors: Brett Wilson, M AlgahtaniAbstract:The traditional logarithmic amplifier configuration based on a voltage operational amplifier with a diode-connected transistor in its feedback loop displays a significantly reduced bandwidth at lower Signal levels. Replacing the operational amplifier by a transconductance feedback amplifier overcomes this problem completely and offers constant-bandwidth operation throughout the full Signal Range.
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ISCAS (1) - Improved logarithmic converter based on a transconductance feedback amplifier
ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196), 1Co-Authors: Brett Wilson, M. Al-gahtaniAbstract:The traditional logarithmic amplifier configuration based on a voltage operational amplifier with a diode-connected transistor in its feedback loop displays a significantly reduced bandwidth at lower Signal levels. Replacing the operational amplifier by a transconductance feedback amplifier overcomes this problem completely and offers constant-bandwidth operation throughout the full Signal Range.
Brian R La Cour - One of the best experts on this subject based on the ideXlab platform.
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Range sensitive bayesian passive sonar tracking
International Conference on Information Fusion, 2010Co-Authors: Bryan A Yocom, Jason M. Aughenbaugh, Brian R La CourAbstract:Passive sonar arrays are commonly operated under a far-field assumption in which the only observable parameter regarding target location is the direction of arrival of the target's Signal. Range can be observed, but only when a target is in the near-field region of the array. In a Bayesian formulation of the problem, additional Range dependence may be added to the passive sonar likelihood function by utilizing knowledge of the source level of a target of interest. It is shown that incorporating such knowledge of source level can increase track accuracy, both in the near-field and far-field regions of the array. In addition, it is shown that source level modeling can give a field of omni-directional sensors the ability to detect and localize a target.
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FUSION - Range-sensitive Bayesian passive sonar tracking
2010 13th International Conference on Information Fusion, 2010Co-Authors: Bryan A Yocom, Jason M. Aughenbaugh, Brian R La CourAbstract:Passive sonar arrays are commonly operated under a far-field assumption in which the only observable parameter regarding target location is the direction of arrival of the target's Signal. Range can be observed, but only when a target is in the near-field region of the array. In a Bayesian formulation of the problem, additional Range dependence may be added to the passive sonar likelihood function by utilizing knowledge of the source level of a target of interest. It is shown that incorporating such knowledge of source level can increase track accuracy, both in the near-field and far-field regions of the array. In addition, it is shown that source level modeling can give a field of omni-directional sensors the ability to detect and localize a target.
