-
公开(公告)号：EP3214765A1
公开(公告)日：2017-09-06
申请号：EP17158074.9
申请日：2017-02-27
申请人： Analog Devices, Inc.
发明人： MANGANARO, Gabriele , ENGEL, Gil
CPC分类号： H03M1/0863 , H03M1/0673 , H03M1/0678 , H03M1/742
摘要： Reducing distortions in a digital-to-analog converter is a challenge for circuit designers. For current steering digital-to-analog converters (DACs), a quad switching scheme has been used to remove code-dependent glitching which is otherwise present in dual switching schemes. However, due to various impairments in the circuit, e.g., mismatches in the transistors, some code-dependent distortions remain even when a quad switching scheme is implemented. To address this issue, the quad switching scheme can be randomized to improve dynamic linearity while relaxing driving circuitry design and power constraints. Advantageously, randomization reduces the code dependency of the distortions and makes the distortions appear more noise-like at the output of the DAC.
摘要翻译： 减少数模转换器的失真对电路设计人员来说是一个挑战。 对于电流控制数字模拟转换器（DAC），四开关方案已被用于消除在双开关方案中存在的与代码相关的毛刺。 然而，由于电路中的各种损伤（例如，晶体管中的不匹配），即使实施四交换方案时仍存在一些依赖于代码的失真。 为了解决这个问题，四开关方案可以随机化，以改善动态线性度，同时放宽驱动电路设计和功率限制。 有利的是，随机化降低了失真的代码依赖性并且使失真在DAC的输出处看起来更像噪声。
-
公开(公告)号：EP2809007B1
公开(公告)日：2017-03-22
申请号：EP14168345.8
申请日：2014-05-14
-
3.发明授权METHOD TO REDUCE ERROR IN TIME INTERLEAVED ANALOG-TO-DIGITAL CONVERTERS ARISING DUE TO APERTURE DELAY MISMATCH 有权一种用于减少在交错的模拟 - 数字转换误差基于不一致APERTURVERZÖGERUNG
公开(公告)号：EP2401815B1
公开(公告)日：2014-03-26
申请号：EP10746631.0
申请日：2010-02-11
申请人： Analog Devices, Inc.
发明人： CARREAU, Gary
CPC分类号： H03M1/0673 , H03M1/1215
-
4.发明授权System and method for simplifying analog processing in a transmitter incorporating a randomization circuit 有权系统和方法，用于在发射机中具有屏蔽电路的模拟处理的简化
公开(公告)号：EP1612951B1
公开(公告)日：2012-07-04
申请号：EP05009391.3
申请日：2005-04-28
申请人： Broadcom Corporation
发明人： Pan, Meng-An
CPC分类号： H04B1/0475 , H03M1/0673 , H03M3/502 , H04B1/30 , H04L27/20
-
5.发明授权APPARATUS AND METHOD FOR DYNAMIC CIRCUIT ELEMENT SELECTION IN A DIGITAL-TO-ANALOG CONVERTER 有权装置和方法的动态电路元件选择用在数字模拟转换器
公开(公告)号：EP2269311B1
公开(公告)日：2012-06-20
申请号：EP09762966.1
申请日：2009-03-08
CPC分类号： H03M1/004 , H03M1/066 , H03M1/0665 , H03M1/0673 , H03M1/74 , H03M3/502
摘要： According to at least one embodiment of the invention, an apparatus may include first, second and third circuits. The first circuit receives input data and provides a plurality of first signals asserted based on the input data. The second circuit receives the plurality of first signals and provides a plurality of second signals used to select a plurality of circuit elements. The third circuit generates a control for the second circuit using a fractional data weight of the input data, the second circuit mapping the plurality of first signals to the plurality of second signals based on the control from the third circuit.
-
公开(公告)号：EP1622272B1
公开(公告)日：2008-10-08
申请号：EP05023070.5
申请日：2001-09-11
申请人： FUJITSU LIMITED
IPC分类号： H03M1/06
CPC分类号： H03M1/0673 , H03M1/747 , H03M3/502
-
公开(公告)号：EP1492238B1
公开(公告)日：2006-05-24
申请号：EP04020211.1
申请日：2000-10-26
申请人： FUJITSU LIMITED
IPC分类号： H03M1/06
CPC分类号： H03M1/0673 , H03M1/747 , H03M3/502
-
8.发明公开System and method for simplifying analog processing in a transmitter incorporating a randomization circuit 有权系统和方法，用于在发射机中具有屏蔽电路的模拟处理的简化
公开(公告)号：EP1612951A2
公开(公告)日：2006-01-04
申请号：EP05009391.3
申请日：2005-04-28
申请人： Broadcom Corporation
CPC分类号： H04B1/0475 , H03M1/0673 , H03M3/502 , H04B1/30 , H04L27/20
摘要： The system and method enable simpler analog processing in a transmitter by reducing the number of bits in a digital signal through delta sigma modulation. Selection of current sources in a digital to analog converter of the transmitter is done using a randomization circuit.
摘要翻译： 该系统和方法通过减少通过ΔΣ调制的数字信号的比特数使在发射机中简单的模拟处理。 在数字到发射机的模拟转换器的电流源的选择是使用随机化电路来完成。
-
9.发明公开CORRELATION-BASED BACKGROUND CALIBRATION FOR REDUCING INTER-STAGE GAIN ERROR AND NON-LINEARITY IN PIPELINED ANALOG-TO-DIGITAL CONVERTERS 审中-公开基于相关性的背景校准用于减少中间级的增益误差和非线性度IN TRANSFERRED模数转换器
公开(公告)号：EP2781028A4
公开(公告)日：2016-04-20
申请号：EP12850414
申请日：2012-09-12
申请人： ANALOG DEVICES INC
CPC分类号： H03M1/1057 , H03M1/0673 , H03M1/167
-
10.发明公开CORRELATION-BASED BACKGROUND CALIBRATION FOR REDUCING INTER-STAGE GAIN ERROR AND NON-LINEARITY IN PIPELINED ANALOG-TO-DIGITAL CONVERTERS 审中-公开基于相关性的背景校准用于减少中间级的增益误差和非线性度IN TRANSFERRED模数转换器
公开(公告)号：EP2781028A1
公开(公告)日：2014-09-24
申请号：EP12850414.9
申请日：2012-09-12
申请人： Analog Devices, Inc.
IPC分类号： H03M1/20
CPC分类号： H03M1/1057 , H03M1/0673 , H03M1/167
摘要： A method and a corresponding device for calibrating a pipelined analog-to-digital converter (ADC) involve injecting a randomly determined amount of dither into one of a flash component and a multiplying digital-to-analog converter (MDAC) in at least one stage in the ADC. For each stage of the at least one stage a correlation procedure is performed to estimate, based on an output of the ADC, an amount of gain experienced by the injected dither after propagating through the stage. The stage is then calibrated based on its respective gain estimate.
-
-
-
-
-
-
-
-
-
搜索结果
60 条记录 (耗时 0.019 秒)
