-
公开(公告)号：US08311243B2
公开(公告)日：2012-11-13
申请号：US11610496
申请日：2006-12-13
IPC分类号： H03F99/00
CPC分类号： H03G3/004 , H02M3/07 , H03F1/0227 , H03F1/025 , H03F3/183 , H03F2200/03 , H03F2200/211 , H03F2200/507 , H03G3/20 , H03G3/3031
摘要： An energy-efficient consumer device audio power output stage provides improved battery life and reduced power dissipation. A power supply having a selectable operating mode supplies the power supply rails to the power amplified output stage. The operating mode is controlled in conformity with the audio signal level, which may be determined from a volume control setting of the device and/or from a signal level detector that determines the amplitude of the signal being amplified. The power supply may be a charge pump in which the operating mode uses a capacitive divider to provide for selection of a power supply output voltage that is a rational fraction of the power supply output voltage in a full-voltage operating mode.
摘要翻译： 节能消费者设备音频功率输出级提供更好的电池寿命和更低的功耗。 具有可选操作模式的电源将电源轨提供给功率放大输出级。 操作模式根据音频信号电平进行控制，音频信号电平可以根据设备的音量控制设置和/或从确定被放大的信号的幅度的信号电平检测器确定。 电源可以是电荷泵，其中操作模式使用电容分压器来提供在全电压工作模式下选择作为电源输出电压的有效部分的电源输出电压。
-
公开(公告)号：US20080044041A1
公开(公告)日：2008-02-21
申请号：US11610496
申请日：2006-12-13
IPC分类号： H03F21/00
CPC分类号： H03G3/004 , H02M3/07 , H03F1/0227 , H03F1/025 , H03F3/183 , H03F2200/03 , H03F2200/211 , H03F2200/507 , H03G3/20 , H03G3/3031
摘要： An energy-efficient consumer device audio power output stage provides improved battery life and reduced power dissipation. A power supply having a selectable operating mode supplies the power supply rails to the power amplified output stage. The operating mode is controlled in conformity with the audio signal level, which may be determined from a volume control setting of the device and/or from a signal level detector that determines the amplitude of the signal being amplified. The power supply may be a charge pump in which the operating mode uses a capacitive divider to provide for selection of a power supply output voltage that is a rational fraction of the power supply output voltage in a full-voltage operating mode.
摘要翻译： 节能消费者设备音频功率输出级提供更好的电池寿命和更低的功耗。 具有可选操作模式的电源将电源轨提供给功率放大输出级。 操作模式根据音频信号电平进行控制，音频信号电平可以根据设备的音量控制设置和/或从确定被放大的信号的幅度的信号电平检测器确定。 电源可以是电荷泵，其中操作模式使用电容分压器来提供在全电压工作模式下选择作为电源输出电压的有效部分的电源输出电压。
-
公开(公告)号：US20090085657A1
公开(公告)日：2009-04-02
申请号：US11864480
申请日：2007-09-28
申请人： HUA YANG , Ammisetti Prasad , John L. Melanson
发明人： HUA YANG , Ammisetti Prasad , John L. Melanson
CPC分类号： H03F3/45475 , H03F1/3211 , H03F2203/45136 , H03F2203/45528
摘要： A resistive circuit includes a first terminal and a second terminal and polycrystalline first and second resistive segments coupled between the first and second terminals. A third terminal A is coupled to the first resistive segment, and a third terminal B is coupled to the second resistive segment. The third terminal A has a first voltage with respect to the first terminal, and the third terminal B has a second voltage with respect to the second terminal. With this arrangement, the non-linearity of resistance of the first resistive segment at least partially compensates for non-linearity of resistance of the second resistive segment.
摘要翻译： 电阻电路包括耦合在第一和第二端子之间的第一端子和第二端子以及多晶的第一和第二电阻段。 第三端子A耦合到第一电阻段，并且第三端子B耦合到第二电阻段。 第三端子A相对于第一端子具有第一电压，并且第三端子B相对于第二端子具有第二电压。 利用这种布置，第一电阻段的电阻的非线性至少部分地补偿第二电阻段的电阻的非线性。
-
公开(公告)号：US07616089B2
公开(公告)日：2009-11-10
申请号：US11864480
申请日：2007-09-28
申请人： Hua Yang , Ammisetti Prasad , John L. Melanson
发明人： Hua Yang , Ammisetti Prasad , John L. Melanson
CPC分类号： H03F3/45475 , H03F1/3211 , H03F2203/45136 , H03F2203/45528
摘要： A resistive circuit includes a first terminal and a second terminal and polycrystalline first and second resistive segments coupled between the first and second terminals. A third terminal A is coupled to the first resistive segment, and a third terminal B is coupled to the second resistive segment. The third terminal A has a first voltage with respect to the first terminal, and the third terminal B has a second voltage with respect to the second terminal. With this arrangement, the non-linearity of resistance of the first resistive segment at least partially compensates for non-linearity of resistance of the second resistive segment.
摘要翻译： 电阻电路包括耦合在第一和第二端子之间的第一端子和第二端子以及多晶的第一和第二电阻段。 第三端子A耦合到第一电阻段，并且第三端子B耦合到第二电阻段。 第三端子A相对于第一端子具有第一电压，并且第三端子B相对于第二端子具有第二电压。 利用这种布置，第一电阻段的电阻的非线性至少部分地补偿第二电阻段的电阻的非线性。
-
公开(公告)号：US20100013050A1
公开(公告)日：2010-01-21
申请号：US12568947
申请日：2009-09-29
申请人： Hua Yang , Ammisetti Prasad , John L. Melanson
发明人： Hua Yang , Ammisetti Prasad , John L. Melanson
IPC分类号： H01L29/86
CPC分类号： H03F3/45475 , H03F1/3211 , H03F2203/45136 , H03F2203/45528
摘要： A resistive circuit includes a first terminal and a second terminal and polycrystalline first and second resistive segments coupled between the first and second terminals. A third terminal A is coupled to the first resistive segment, and a third terminal B is coupled to the second resistive segment. The third terminal A has a first voltage with respect to the first terminal, and the third terminal B has a second voltage with respect to the second terminal. With this arrangement, the non-linearity of resistance of the first resistive segment at least partially compensates for non-linearity of resistance of the second resistive segment.
摘要翻译： 电阻电路包括耦合在第一和第二端子之间的第一端子和第二端子以及多晶的第一和第二电阻段。 第三端子A耦合到第一电阻段，并且第三端子B耦合到第二电阻段。 第三端子A相对于第一端子具有第一电压，并且第三端子B相对于第二端子具有第二电压。 利用这种布置，第一电阻段的电阻的非线性至少部分地补偿第二电阻段的电阻的非线性。
-
公开(公告)号：US07915995B2
公开(公告)日：2011-03-29
申请号：US12568947
申请日：2009-09-29
申请人： Hua Yang , Ammisetti Prasad , John L. Melanson
发明人： Hua Yang , Ammisetti Prasad , John L. Melanson
CPC分类号： H03F3/45475 , H03F1/3211 , H03F2203/45136 , H03F2203/45528
摘要： A resistive circuit includes a first terminal and a second terminal and polycrystalline first and second resistive segments coupled between the first and second terminals. A third terminal A is coupled to the first resistive segment, and a third terminal B is coupled to the second resistive segment. The third terminal A has a first voltage with respect to the first terminal, and the third terminal B has a second voltage with respect to the second terminal. With this arrangement, the non-linearity of resistance of the first resistive segment at least partially compensates for non-linearity of resistance of the second resistive segment.
摘要翻译： 电阻电路包括耦合在第一和第二端子之间的第一端子和第二端子以及多晶的第一和第二电阻段。 第三端子A耦合到第一电阻段，并且第三端子B耦合到第二电阻段。 第三端子A相对于第一端子具有第一电压，并且第三端子B相对于第二端子具有第二电压。 利用这种布置，第一电阻段的电阻的非线性至少部分地补偿第二电阻段的电阻的非线性。
-
公开(公告)号：US07106132B1
公开(公告)日：2006-09-12
申请号：US10974339
申请日：2004-10-27
申请人： Muari Kewariwal , Ammisetti Prasad
发明人： Muari Kewariwal , Ammisetti Prasad
IPC分类号： H03F3/68
CPC分类号： H03F3/45188 , H03F1/3223 , H03F3/45192 , H03F2203/45264 , H03F2203/45508
摘要： A feed-forward operational amplifier including a dedicated summer circuit for summing a signal generated by a first amplifier stage of a feed-forward amplifier and a signal received from an external source to generate a sum signal and a second amplifier stage coupled to the summer circuit and receiving the sum signal. The second amplifier stage realizes a pole-zero doublet to decrease a unity gain frequency of the feed-forward operational amplifier.
摘要翻译： 一种前馈运算放大器，包括用于对由前馈放大器的第一放大级产生的信号和从外部源接收的信号进行求和的专用加法电路，以产生和信号，以及耦合到加法电路的第二放大级 并接收和信号。 第二放大器级实现极点零点以减小前馈运算放大器的单位增益频率。
-
公开(公告)号：US20060232331A1
公开(公告)日：2006-10-19
申请号：US11455592
申请日：2006-06-19
申请人： Karl Thompson , John Melanson , Chung-Kai Chow , Ammisetti Prasad
发明人： Karl Thompson , John Melanson , Chung-Kai Chow , Ammisetti Prasad
IPC分类号： H03F1/02
摘要： A chopping amplifier and method for chopping an input signal are disclosed. The chopping amplifier and method utilize at least two chopping amplifier stages. A chopping operation of an input signal is segmented across two or more chopping amplifier stages, and the two or more chopping amplifier stages are responsive to a master controller. Chop clock signals of the chopping amplifier stages are staggered so that they have non-overlapping periods and at least one of the chopping amplifier stages is not operating in an open loop at any given time. The non-overlapping periods are periodic so that a master chop clock of the master controller can be operated at a lower chop clock frequency. For every doubling of N number of chopping amplifier stages, magnitudes of chopping artifacts and aliased components are each respectively reduced by 3 dB.
-
公开(公告)号：US06885211B1
公开(公告)日：2005-04-26
申请号：US10117374
申请日：2002-04-05
CPC分类号： G01R31/2837
摘要： A method of testing an integrated circuit includes setting a guardbanded limit for a parameter associated with an embedded node, a deviation from the guardbanded limit under a set of test conditions correlated with a failure of the integrated circuit across a range of operating conditions. A test is performed under the test conditions to detect deviations of the parameter from the guardbanded limit to detect failures of the integrated circuit over the range of operating conditions.
摘要翻译： 一种测试集成电路的方法包括设置与嵌入式节点相关联的参数的保护限值，与在整个操作条件范围内的集成电路的故障相关的一组测试条件下的保护带限制的偏差。 在测试条件下进行测试，以检测参数与防护带限制的偏差，以检测集成电路在工作条件范围内的故障。
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.023 秒)
