专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09356562B2 Family of slew-enhanced operational transconductance amplifiers 有权
标题翻译：一系列转换增强型运算跨导放大器
公开(公告)号：US09356562B2
公开(公告)日：2016-05-31
申请号：US14168647
申请日：2014-01-30
申请人： Apple Inc.
发明人： A Motamed
IPC分类号： H03F3/45 , H03F1/22
CPC分类号： H03F1/223 , H03F3/45188 , H03F3/45192 , H03F2200/234 , H03F2200/411 , H03F2203/45002 , H03F2203/45024 , H03F2203/45248 , H03F2203/45536 , H03F2203/45544 , H03F2203/45618 , H03F2203/45674 , H03F2203/45676 , H03F2203/45702
摘要： Operational transconductance amplifiers (OTAs) with enhanced slew rate are disclosed. An OTA can have a main amplifier and pre-amplifier gain stage to increase the effective transconductance and bandwidth of the OTA. The pre-amplifier and main amplifier can be coupled to enhance slew current without adding additional bias current to the main amplifier input stages. Pre-amplifier bias current can be recycled and redirected to the load. OTAs with enhanced slew rate can be particularly useful in applications requiring high-frequency switching of voltage levels to drive high capacitance lines. For example, an integrated touch sensor panel and display can be operated by alternatively applying a first voltage level to an electrode in a display mode and a second voltage level during a touch sensing mode using OTA sense or charge amplifiers with enhanced slew rate. Enhanced slew rate can increase the time available to demodulate a touch signal for improved system performance.
摘要翻译：公开了具有增强的转换速率的运算跨导放大器（OTA）。 OTA可以具有主放大器和前置放大器增益级，以增加OTA的有效跨导和带宽。前置放大器和主放大器可以耦合以增强转换电流，而不会向主放大器输入级增加额外的偏置电流。前置放大器偏置电流可以回收并重定向到负载。具有增强的转换速率的OTAs可以在需要高频切换电压电平以驱动高电容线的应用中特别有用。例如，可以通过在使用具有增强的转换速率的OTA感测或电荷放大器的触摸感测模式期间以显示模式和第二电压电平交替施加第一电压电平来操作集成的触摸传感器面板和显示器。增强的转换速率可以增加解调触摸信号的时间，以提高系统性能。

2. 发明授权

US09647639B1 Baseband filters and interfaces between a digital-to-analog converter and a baseband filter 有权
公开(公告)号：US09647639B1
公开(公告)日：2017-05-09
申请号：US14941419
申请日：2015-11-13
申请人： QUALCOMM Incorporated
发明人： Ibrahim Chamas
IPC分类号： H03K5/00 , H03F3/45 , H03H11/12 , H03M1/66 , H03F3/21 , H03F3/19
CPC分类号： H03H11/1213 , H03F1/08 , H03F1/3205 , H03F1/3241 , H03F1/342 , H03F3/19 , H03F3/195 , H03F3/211 , H03F3/45076 , H03F3/45659 , H03F2200/144 , H03F2200/171 , H03F2200/237 , H03F2200/24 , H03F2200/294 , H03F2200/451 , H03F2200/72 , H03F2200/75 , H03F2200/91 , H03F2203/21106 , H03F2203/21115 , H03F2203/21157 , H03F2203/45002 , H03F2203/45004 , H03F2203/45126 , H03F2203/45154 , H03H11/126 , H03M1/66
摘要： Exemplary embodiments of the present disclosure are related to baseband filters. A device may include a digital-to-analog converter (DAC) configured to output a DC current. The device may also include an operational amplifier coupled to an output of the DAC and configured to bias an input stage of the operational amplifier with the DC current.

3. 发明申请

US20160191006A1 RECONFIGURABLE AMPLIFIER 有权
标题翻译：可重放放大器
公开(公告)号：US20160191006A1
公开(公告)日：2016-06-30
申请号：US14587863
申请日：2014-12-31
申请人： Texas Instruments Incorporated
发明人： Dina Reda El-Damak , Rajarshi Mukhopadhyay , Jeffrey Anthony Morroni
IPC分类号： H03F3/45
CPC分类号： H03F3/45645 , H03F3/3028 , H03F3/45206 , H03F3/45233 , H03F3/45273 , H03F3/45771 , H03F2203/45002 , H03F2203/45048 , H03F2203/45078 , H03F2203/45116
摘要： An amplifier receives a differential signal and, in response, generates a first negative input current and a first positive input current. In a first operating mode, the amplifier receives a second differential signal, and, in response, generates a second negative input current and a second positive input current. In a second operating mode, the amplifier receives the second differential signal, and, in response, generates a third negative input current and a third positive input current. When the device is operating in the first operating mode, the first negative input current is summed with the second negative input current and the first positive input current is summed with the second positive input current. When the device is operating in the second operating mode, the first negative input current is summed with the third negative input current and the first positive input current is summed with the third positive input current.
摘要翻译：放大器接收差分信号，作为响应，产生第一负输入电流和第一正输入电流。在第一操作模式中，放大器接收第二差分信号，并且作为响应，产生第二负输入电流和第二正输入电流。在第二操作模式中，放大器接收第二差分信号，并且作为响应，产生第三负输入电流和第三正输入电流。当器件在第一工作模式下工作时，第一个负输入电流与第二个负输入电流相加，第一个正输入电流与第二个正输入电流相加。当器件在第二工作模式下工作时，第一个负输入电流与第三个负输入电流相加，第一个正输入电流与第三个正输入电流相加。

4. 发明授权

US5280199A Differential input circuit and operational amplifier with wide common mode input voltage range 失效
标题翻译：差分输入电路和运算放大器具有宽共模输入电压范围
公开(公告)号：US5280199A
公开(公告)日：1994-01-18
申请号：US882535
申请日：1992-05-13
申请人： Tetsuro Itakura
发明人： Tetsuro Itakura
IPC分类号： H03F3/45 , H03K5/22
CPC分类号： H03F3/45183 , H03F3/45654 , H03F3/45708 , H03F3/45713 , H03F2200/18 , H03F2203/45002 , H03F2203/45018 , H03F2203/45031 , H03F2203/45074 , H03F2203/45212 , H03F2203/45318
摘要： A differential input circuit capable of realizing a wide common mode input range, without using a current summing circuit, in which the total output current is independent of the common mode input voltage level. The circuit includes: a first differential pair formed by two transistors connected to a current source; a second differential pair connected to the current source in parallel to the first differential pair, including two transistor combinations, each of which is formed by two transistors of mutually complementary conductivity/polarity types having source/emitter electrodes connected to each other; in which bias voltages are applied to gate/base electrodes of one of transistors of each transistor combination in the second differential pair which has an identical conductivity/polarity type as the transistors of the first differential pair. The outputs are connected with the first and second differential pairs such that the first and second differential pairs have the same output current direction. Differential and operational amplifier configurations using this differential input circuit are also disclosed.
摘要翻译：一种差分输入电路，其能够实现宽共模输入范围，而不使用电流求和电路，其中总输出电流独立于共模输入电压电平。该电路包括：由连接到电流源的两个晶体管形成的第一差分对; 包括两个晶体管组合的第二差分对，其与电流源并联连接到第一差分对，每个晶体管组合由具有彼此连接的源/发射极的相互互补的导电/极性类型的两个晶体管形成; 其中偏置电压施加到具有与第一差分对的晶体管相同的导电/极性类型的第二差分对中的每个晶体管组合的晶体管之一的栅/基极。输出与第一和第二差分对连接，使得第一和第二差分对具有相同的输出电流方向。还公开了使用该差分输入电路的差分和运算放大器配置。

5. 发明申请

US20170141760A1 BASEBAND FILTERS AND INTERFACES BETWEEN A DIGITAL-TO-ANALOG CONVERTER AND A BASEBAND FILTER 有权
公开(公告)号：US20170141760A1
公开(公告)日：2017-05-18
申请号：US14941419
申请日：2015-11-13
申请人： QUALCOMM Incorporated
发明人： Ibrahim Chamas
IPC分类号： H03H11/12 , H03F3/19 , H03F3/21 , H03M1/66 , H03F3/45
CPC分类号： H03H11/1213 , H03F1/08 , H03F1/3205 , H03F1/3241 , H03F1/342 , H03F3/19 , H03F3/195 , H03F3/211 , H03F3/45076 , H03F3/45659 , H03F2200/144 , H03F2200/171 , H03F2200/237 , H03F2200/24 , H03F2200/294 , H03F2200/451 , H03F2200/72 , H03F2200/75 , H03F2200/91 , H03F2203/21106 , H03F2203/21115 , H03F2203/21157 , H03F2203/45002 , H03F2203/45004 , H03F2203/45126 , H03F2203/45154 , H03H11/126 , H03M1/66
摘要： Exemplary embodiments of the present disclosure are related to baseband filters. A device may include a digital-to-analog converter (DAC) configured to output a DC current. The device may also include an operational amplifier coupled to an output of the DAC and configured to bias an input stage of the operational amplifier with the DC current.

6. 发明授权

US09473092B2 Reconfigurable amplifier 有权
标题翻译：可重构放大器
公开(公告)号：US09473092B2
公开(公告)日：2016-10-18
申请号：US14587863
申请日：2014-12-31
申请人： Texas Instruments Incorporated
发明人： Dina Reda El-Damak , Rajarshi Mukhopadhyay , Jeffrey Anthony Morroni
IPC分类号： H03F3/45
CPC分类号： H03F3/45645 , H03F3/3028 , H03F3/45206 , H03F3/45233 , H03F3/45273 , H03F3/45771 , H03F2203/45002 , H03F2203/45048 , H03F2203/45078 , H03F2203/45116
摘要： An amplifier receives a differential signal and, in response, generates a first negative input current and a first positive input current. In a first operating mode, the amplifier receives a second differential signal, and, in response, generates a second negative input current and a second positive input current. In a second operating mode, the amplifier receives the second differential signal, and, in response, generates a third negative input current and a third positive input current. When the device is operating in the first operating mode, the first negative input current is summed with the second negative input current and the first positive input current is summed with the second positive input current. When the device is operating in the second operating mode, the first negative input current is summed with the third negative input current and the first positive input current is summed with the third positive input current.
摘要翻译：放大器接收差分信号，作为响应，产生第一负输入电流和第一正输入电流。在第一操作模式中，放大器接收第二差分信号，并且作为响应，产生第二负输入电流和第二正输入电流。在第二操作模式中，放大器接收第二差分信号，并且作为响应，产生第三负输入电流和第三正输入电流。当器件在第一工作模式下工作时，第一个负输入电流与第二个负输入电流相加，第一个正输入电流与第二个正输入电流相加。当器件在第二工作模式下工作时，第一个负输入电流与第三个负输入电流相加，第一个正输入电流与第三个正输入电流相加。

7. 发明申请

US20150214897A1 FAMILY OF SLEW-ENHANCED OPERATIONAL TRANSCONDUCTANCE AMPLIFIERS 有权
标题翻译： SLEW增强的运行型交叉放大器的家族
公开(公告)号：US20150214897A1
公开(公告)日：2015-07-30
申请号：US14168647
申请日：2014-01-30
申请人： Apple Inc.
发明人： A MOTAMED
IPC分类号： H03F1/02 , H03F3/45
CPC分类号： H03F1/223 , H03F3/45188 , H03F3/45192 , H03F2200/234 , H03F2200/411 , H03F2203/45002 , H03F2203/45024 , H03F2203/45248 , H03F2203/45536 , H03F2203/45544 , H03F2203/45618 , H03F2203/45674 , H03F2203/45676 , H03F2203/45702
摘要： Operational transconductance amplifiers (OTAs) with enhanced slew rate are disclosed. An OTA can have a main amplifier and pre-amplifier gain stage to increase the effective transconductance and bandwidth of the OTA. The pre-amplifier and main amplifier can be coupled to enhance slew current without adding additional bias current to the main amplifier input stages. Pre-amplifier bias current can be recycled and redirected to the load. OTAs with enhanced slew rate can be particularly useful in applications requiring high-frequency switching of voltage levels to drive high capacitance lines. For example, an integrated touch sensor panel and display can be operated by alternatively applying a first voltage level to an electrode in a display mode and a second voltage level during a touch sensing mode using OTA sense or charge amplifiers with enhanced slew rate. Enhanced slew rate can increase the time available to demodulate a touch signal for improved system performance.
摘要翻译：公开了具有增强的转换速率的运算跨导放大器（OTA）。 OTA可以具有主放大器和前置放大器增益级，以增加OTA的有效跨导和带宽。前置放大器和主放大器可以耦合以增强转换电流，而不会向主放大器输入级增加额外的偏置电流。前置放大器偏置电流可以回收并重定向到负载。具有增强的转换速率的OTAs可以在需要高频切换电压电平以驱动高电容线的应用中特别有用。例如，可以通过在使用具有增强的转换速率的OTA感测或电荷放大器的触摸感测模式期间以显示模式和第二电压电平交替施加第一电压电平来操作集成的触摸传感器面板和显示器。增强的转换速率可以增加解调触摸信号的时间，以提高系统性能。

8. 发明授权

US5287071A Amplifier with high common mode rejection 失效
标题翻译：具有高共模抑制功能的放大器
公开(公告)号：US5287071A
公开(公告)日：1994-02-15
申请号：US980570
申请日：1992-11-20
申请人： John A. Olmstead , Salomon Vulih
发明人： John A. Olmstead , Salomon Vulih
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F3/45475 , H03F3/4565 , H03F2203/45002 , H03F2203/45466 , H03F2203/45476 , H03F2203/45612 , H03F2203/45658 , H03F2203/45711
摘要： A differential amplifier embodying the invention includes a differential stage whose total output current is sensed and whose "tail" and output current is maintained relatively constant over a large common mode voltage range by means of a current feedback loop. This feature eenables the differential amplifier to accurately amplify low amplitude signals riding on a very large common mode signal. The tail current to the differential amplifier is supplied by a controllable current source. The tail current flows via two differentially connected transistors in two differential output terminals and is divided between them as a function of the voltage applied to two differential signal input terminals. The amplitude of the tail current is set by a current level setting current source connected to a summing node. An amplifier and current mirroring network is connected between the summing node and the controllable current source. A current sensing and mirroring network is connected to the two differential outputs for sensing the total current flowing and feeding back a current proportional thereto to the summing node for maintaining the tail current relatively constant over wide variations in the voltage applied to the signal input terminals.
摘要翻译：实施本发明的差分放大器包括差分级，其感测总输出电流，并且通过电流反馈回路在“大”共模电压范围内“尾”和输出电流保持相对恒定。该功能可使差分放大器精确放大乘坐非常大的共模信号的低幅度信号。差分放大器的尾电流由可控电流源提供。尾电流通过两个差分输出端子中的两个差分连接的晶体管流动，并根据施加到两个差分信号输入端子的电压进行分压。尾电流的振幅由连接到求和节点的电流电平设置电流源设置。放大器和电流镜像网络连接在求和节点和可控电流源之间。电流检测和镜像网络连接到两个差分输出，用于感测总电流流动，并将与其成比例的电流反馈到求和节点，用于在施加到信号输入端子的电压的宽变化中保持尾电流相对恒定。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式