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. 发明申请

WO2016099757A1 LOW POWER OPERATIONAL TRANSCONDUCTANCE AMPLIFIER 审中-公开
标题翻译：低功率运行的交叉放大器
公开(公告)号：WO2016099757A1
公开(公告)日：2016-06-23
申请号：PCT/US2015/061163
申请日：2015-11-17
申请人： QUALCOMM INCORPORATED
发明人： KIRAN, Ganesh
IPC分类号： H03F3/45 , H03F3/195 , H03F3/24
CPC分类号： H03F1/0205 , H03F1/223 , H03F3/195 , H03F3/245 , H03F3/45179 , H03F3/45188 , H03F3/45475 , H03F2200/456 , H03F2203/45288 , H03F2203/45364 , H03F2203/45644 , H03F2203/45651 , H03H11/0427 , H03H19/004
摘要： A low power operational transconductance amplifier is disclosed. In an exemplary embodiment, an apparatus includes a transconductance stage (402) configured to convert a first input voltage signal (Vil) to first and second current signals and to convert a second input voltage signal (Vi2) to third and fourth current signals. The apparatus also includes a current amplification stage (404) configured to amplify the second current signal to generate a first amplified current signal and to amplify the fourth current signal to generate a second amplified current signal. The apparatus also includes a current summation stage (406) configured to sum together the third current signal and the first amplified current signal to generate a first output voltage signal (Vol), and to sum together the first current signal and the second amplified current signal to generate a second output voltage signal (Vo2).
摘要翻译：公开了一种低功率运算跨导放大器。在示例性实施例中，一种装置包括跨导级（402），其构造成将第一输入电压信号（Vil）转换为第一和第二电流信号，并将第二输入电压信号（Vi2）转换为第三和第四电流信号。该装置还包括电流放大级（404），其被配置为放大第二电流信号以产生第一放大电流信号并放大第四电流信号以产生第二放大电流信号。该装置还包括电流求和级（406），其被配置为将第三电流信号和第一放大电流信号相加在一起以产生第一输出电压信号（Vol），并将第一电流信号和第二放大电流信号以产生第二输出电压信号（Vo2）。

2. 发明申请

WO02013377A2 A SWITCHED-CAPACITOR, COMMON-MODE FEEDBACK CIRCUIT FOR A DIFFERENTIAL AMPLIFIER WITHOUT TAIL CURRENT 审中-公开
标题翻译：用于不具有尾流电流的差分放大器的开关电容器，通用反馈电路
公开(公告)号：WO02013377A2
公开(公告)日：2002-02-14
申请号：PCT/US2001/041576
申请日：2001-08-03
IPC分类号： H03F3/00 , H03F3/45
CPC分类号： H03F3/45645 , H03F3/005 , H03F3/45179 , H03F3/45188 , H03F3/45654 , H03F2203/45394 , H03F2203/45421 , H03F2203/45651
摘要： Provided is a switched capacitor feedback circuit including two or more input ports configured to receive a corresponding a number of input signals and at least one output port. The output port is configured to output an adjusting signal. The input signals includes a number of primary signals and two or more reference signals that are associated with a first timing phase of operation. The adjusting signal is produced based upon a comparison between the primary signals the reference signals. Also provided is a pair of active devices having gates coupled together and structured to receive the adjusting signal. The active devices are configured to provide a gain to the adjusting signal in accordance with a predetermined gain factor, and facilitate an adjustment to the number of primary signals based upon the gain during a second timing phase of operation.
摘要翻译：提供了一种开关电容器反馈电路，其包括被配置为接收对应的多个输入信号和至少一个输出端口的两个或多个输入端口。输出端口配置为输出调整信号。输入信号包括与第一定时相位相关联的多个主信号和两个或更多个参考信号。基于主信号之间的参考信号的比较产生调整信号。还提供了一对具有耦合在一起并被构造成接收调节信号的门的有源器件。有源器件被配置为根据预定的增益因子向调整信号提供增益，并且有助于在操作的第二定时阶段期间基于增益来调整主信号的数量。

3. 发明申请

WO0213376A3 METHOD AND CIRCUIT FOR A DUAL SUPPLY AMPLIFIER 审中-公开
标题翻译：双电源放大器的方法和电路
公开(公告)号：WO0213376A3
公开(公告)日：2003-03-06
申请号：PCT/US0141534
申请日：2001-08-03
申请人： BROADCOM CORP
发明人： SINGOR FRANK W , BEHZAD ARYA R
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F3/45381 , H03F3/45475 , H03F2200/516 , H03F2203/45392 , H03F2203/45651 , H03F2203/45652 , H03F2203/45682 , H03F2203/45696 , H03F2203/45702
摘要： A circuit and method for bridging an analog signal between two integrated circuits operating at different supply voltages. The circuit is a two stage fixed gain amplifier. The first stage is a transconductance amplifier and the second stage is an operational amplifier. The first stage converts an input signal from a voltage into a current. The second stage converts the current signal to an output voltage signal.
摘要翻译：一种在不同电源电压下工作的两个集成电路之间桥接模拟信号的电路和方法。该电路是两级固定增益放大器。第一级是跨导放大器，第二级是运算放大器。第一阶段将输入信号从电压转换为电流。第二级将电流信号转换为输出电压信号。

4. 发明申请

WO02071601A2 PREAMPLIFIER CIRCUIT FOR A PHOTODETECTOR 审中-公开
标题翻译：用于照相机的前置放大器电路
公开(公告)号：WO02071601A2
公开(公告)日：2002-09-12
申请号：PCT/EP0201331
申请日：2002-02-04
申请人： EM MICROELECTRONIC MARIN SA
发明人： BUESCHER KEVIN SCOTT , LAUFFENBURGER JAMES HAROLD , ARACHTINGI JOHN WILLIAM
IPC分类号： H03F3/30 , H03F3/45 , H03G1/00 , H03G
CPC分类号： H03G1/0088 , H03F3/3023 , H03F3/45183 , H03F2203/30054 , H03F2203/30151 , H03F2203/30156 , H03F2203/45651 , H03F2203/45658 , H03F2203/7236 , H03G1/0023
摘要： An amplifier circuit (20) for a photodetector includes a transconductance variable gain stage (32). The transconductance variable gain stage (32) has an input (34) capable of connecting to the photedetector and an output (40). A transconductance gain stage (44) has an input (42) connected to the output (40) of the transconductance variable gain stage (32). A feedback resistor (46) is connected between an output (48) of the transconductance gain stage (44) and the input (42) of the transconductance gain stage (44).
摘要翻译：用于光电检测器的放大器电路（20）包括跨导可变增益级（32）。跨导可变增益级（32）具有能够连接到光电检测器的输入端（34）和输出端（40）。跨导增益级（44）具有连接到跨导可变增益级（32）的输出（40）的输入（42）。反馈电阻（46）连接在跨导增益级（44）的输出（48）和跨导增益级（44）的输入端（42）之间。

5. 发明申请

WO0213377A3 A SWITCHED-CAPACITOR, COMMON-MODE FEEDBACK CIRCUIT FOR A DIFFERENTIAL AMPLIFIER WITHOUT TAIL CURRENT 审中-公开
标题翻译：用于不具有尾流电流的差分放大器的开关电容器，通用反馈电路
公开(公告)号：WO0213377A3
公开(公告)日：2003-11-06
申请号：PCT/US0141576
申请日：2001-08-03
申请人： BROADCOM CORP
发明人： KWAN TOM W , SINGOR FRANK , DUNCAN RALPH
IPC分类号： H03F3/00 , H03F3/45
CPC分类号： H03F3/45645 , H03F3/005 , H03F3/45179 , H03F3/45188 , H03F3/45654 , H03F2203/45394 , H03F2203/45421 , H03F2203/45651
摘要： Provided is a switched capacitor feedback circuit including two or more input ports configured to receive a corresponding a number of input signals and at least one output port. The output port is configured to output an adjusting signal. The input signals includes a number of primary signals and two or more reference signals that are associated with a first timing phase of operation. The adjusting signal is produced based upon a comparison between the primary signals the reference signals. Also provided is a pair of active devices having gates coupled together and structured to receive the adjusting signal. The active devices are configured to provide a gain to the adjusting signal in accordance with a predetermined gain factor, and facilitate an adjustment to the number of primary signals based upon the gain during a second timing phase of operation.
摘要翻译：提供了一种开关电容器反馈电路，其包括被配置为接收对应的多个输入信号和至少一个输出端口的两个或多个输入端口。输出端口配置为输出调整信号。输入信号包括与第一定时相位相关联的多个主信号和两个或更多个参考信号。基于主信号之间的参考信号的比较产生调整信号。还提供了一对具有耦合在一起并被构造成接收调节信号的门的有源器件。有源器件被配置为根据预定的增益因子向调整信号提供增益，并且有助于在操作的第二定时阶段期间基于增益来调整主信号的数量。

6. 发明申请

WO01084705A1 SYSTEM AND METHOD FOR OPTIMAL BIASING OF A TELESCOPIC CASCODE OPERATIONAL TRANSCONDUCTANCE AMPLIFIER (OTA) 审中-公开
标题翻译：系统和方法用于电视机操作的交叉放大器（OTA）的最佳偏移
公开(公告)号：WO01084705A1
公开(公告)日：2001-11-08
申请号：PCT/US2000/035683
申请日：2000-12-26
IPC分类号： H03F3/00 , H03F3/45
CPC分类号： H03F3/45188 , H03F3/005 , H03F3/45659 , H03F2203/45356 , H03F2203/45398 , H03F2203/45651 , H03F2203/45682 , H03F2203/45732
摘要： A system and method of biasing a telescopic cascode operational transconductance amplifier is provided to prevent or reduce the likelihood that the inputs to the amplifier do exceed the input common mode voltage range for the amplifier. The system and method provides a bias control circuit for the differential input transistors and tail current transistor of the operational amplifier such that their respective Vds-Vdsat is maintained substantially constant. To accomplish this, the biasing system and and method uses a bandgap voltage source that typically produces a highly stable voltage that is substantially temperature and process invariant. The bandgap voltage source is used to generate bias voltages applied to the gates and drains of the differential input transistors that maintains their and the tail current transistor's Vds-Vdsat substantially constant. There are several advantages of the system and method for biasing a telescopic cascode OTA. First, by keeping Vds-Vdsat substantially constant for the tail current transistor, this transistor is prevented from operating in its linear region, which would otherwise cause a decrease in the bandwidth of the amplifier. Second, by keeping (i.e. Vds-Vdsat) is substantially constant for the input transistors, these transistors are prevented from operating in their linear region, which would otherwise cause a reduction in the output impedance and the DC gain of the amplifier. Third, Vds-Vdsat for the input and tail current transistors can be maintained relatively low in order to minimize the reduction of the output swing of the amplifier.
摘要翻译：提供了一种偏置伸缩共源共栅运算跨导放大器的系统和方法，以防止或减少放大器的输入超过放大器的输入共模电压范围的可能性。该系统和方法为运算放大器的差分输入晶体管和尾电流晶体管提供偏置控制电路，使得它们各自的Vds-Vdsat保持基本恒定。为了实现这一点，偏置系统和方法使用通常产生基本上温度和过程不变的高度稳定的电压的带隙电压源。带隙电压源用于产生施加到差分输入晶体管的栅极和漏极的偏置电压，其保持它们和尾电流晶体管的Vds-Vdsat基本恒定。用于偏置可伸缩共源共栅OTA的系统和方法有几个优点。首先，通过使Vds-Vdsat对于尾电流晶体管保持基本恒定，该晶体管被阻止在其线性区域中工作，否则会导致放大器带宽的降低。第二，通过保持（即Vds-Vdsat）对于输入晶体管基本上是恒定的，这些晶体管被阻止在它们的线性区域中工作，这将导致放大器的输出阻抗和DC增益的降低。第三，为了最小化放大器的输出摆幅的减小，用于输入和电流晶体管的Vds-Vdsat可以保持相对较低。

7. 发明申请

WO2017091710A1 MISMATCH CORRECTION IN DIFFERENTIAL AMPLIFIERS USING ANALOG FLOATING GATE TRANSISTORS 审中-公开
标题翻译：差分放大器采用模拟浮动栅极晶体管的差动校正
公开(公告)号：WO2017091710A1
公开(公告)日：2017-06-01
申请号：PCT/US2016/063563
申请日：2016-11-23
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED
发明人： PATEL, Ujas, Natvarlal , MARSHALL, Andrew , STIEGLER, Harvery, J. , JARREAU, Keith, M.
IPC分类号： H03F3/45
CPC分类号： H03F3/45273 , H03F1/0205 , H03F3/45 , H03F3/45179 , H03F3/45183 , H03F3/45744 , H03F2200/375 , H03F2203/45121 , H03F2203/45651
摘要： Described examples include an analog differential amplifier (40) circuit, such as an operational transconductance amplifier (OTA), with input offset correction capability. First and second analog floating gate (AFG) devices (30A, 30B) each include a trim transistor (34) connected in parallel with a series transistor (M3, M5) in first and second input legs, respectively, of the amplifier (40). Floating gate electrodes in the AFG devices (30A, 30B) are differentially programmed to correct for error in the output signal (OUT) in response to zero input differential voltage at its inputs (V1, V2). Temperature stability is attained by programming the floating gate electrodes to gate voltages above the floating gate transistors. In one embodiment, the AFG devices (30A, 30B) each include a second trim transistor (36) sharing the same floating gate electrode. The sum of the currents conducted by the second trim transistors (36) is added, by way of a current mirror (42, 44), to the tail current applied to the first and second input legs.
摘要翻译：所描述的示例包括具有输入偏移校正能力的模拟差分放大器（40）电路，诸如运算跨导放大器（OTA）。第一和第二模拟浮动栅极（AFG）器件（30A，30B）分别包括在放大器（40）的第一和第二输入支路中分别与串联晶体管（M3，M5）并联的调整晶体管（34）。响应于其输入（V1，V2）处的零输入差分电压，对AFG装置（30A，30B）中的浮动栅电极进行差分编程以校正输出信号（OUT）中的误差。通过将浮置栅极电极编程为浮置栅极晶体管上方的栅极电压来获得温度稳定性。在一个实施例中，AFG器件（30A，30B）每个都包括共享相同浮栅电极的第二调整晶体管（36）。由第二调整晶体管（36）传导的电流的总和通过电流镜（42,44）被加到施加到第一和第二输入支路的尾电流上。

8. 发明申请

WO2002097981A1 METHOD AND APPARATUS FOR AN EFFICIENT LOW VOLTAGE SWITCHABLE GM CELL 审中-公开
标题翻译：一种高效低电压切换GM电池的方法和装置
公开(公告)号：WO2002097981A1
公开(公告)日：2002-12-05
申请号：PCT/US2002/016762
申请日：2002-05-24
申请人： INFINEON TECHNOLOGIES NORTH AMERICA CORP.
发明人： CYRUSIAN, Sasan
IPC分类号： H03G3/00
CPC分类号： H03G1/0088 , H03F3/45188 , H03F3/45659 , H03F2203/45392 , H03F2203/45396 , H03F2203/45651 , H03G1/0029
摘要： A switching GM cell allowing a wide transconductance range with a limited voltage range. The GM cell includes a plurality of GM setting devices, the operation of which is controlled by a GM setting code. The GM setting code is inputted into a switching circuit which turns on and off at least one of said GM setting devices. Thus, coarse adjustments of the overall transconductance of the cell may be adjusted by hanging the GM setting code and fine adjustments may be made by utilizing the conventional method of adjusting a tuning voltage.
摘要翻译：开关型GM电池允许在有限电压范围内的宽跨导范围。 GM小区包括多个GM设置设备，其运行由GM设置代码控制。 GM设定码被输入切换电路，其切换至少一个所述GM设定装置。因此，可以通过悬挂GM设定代码来调整单元的整个跨导的粗调，并且可以通过利用调整调谐电压的常规方法进行微调。

9. 发明申请

WO02013376A2 METHOD AND CIRCUIT FOR A DUAL SUPPLY AMPLIFIER 审中-公开
标题翻译：双电源放大器的方法和电路
公开(公告)号：WO02013376A2
公开(公告)日：2002-02-14
申请号：PCT/US2001/041534
申请日：2001-08-03
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F3/45381 , H03F3/45475 , H03F2200/516 , H03F2203/45392 , H03F2203/45651 , H03F2203/45652 , H03F2203/45682 , H03F2203/45696 , H03F2203/45702
摘要： A circuit and method for bridging an analog signal between two integrated circuits operating at different supply voltages. The circuit is a two stage fixed gain amplifier. The first stage is a transconductance amplifier and the second stage is an operational amplifier. The first stage converts an input signal from a voltage into a current. The second stage converts the current signal to an output voltage signal.
摘要翻译：一种在不同电源电压下工作的两个集成电路之间桥接模拟信号的电路和方法。该电路是两级固定增益放大器。第一级是跨导放大器，第二级是运算放大器。第一阶段将输入信号从电压转换为电流。第二级将电流信号转换为输出电压信号。

10. 发明申请

WO01041301A1 DIFFERENTIAL AMPLIFIER 审中-公开
标题翻译：差分放大器
公开(公告)号：WO01041301A1
公开(公告)日：2001-06-07
申请号：PCT/JP2000/008512
申请日：2000-12-01
IPC分类号： H03F3/30 , H03F3/45
CPC分类号： H03F3/45179 , H03F3/3028 , H03F3/45192 , H03F2203/45028 , H03F2203/45292 , H03F2203/45651
摘要： A differential amplifier circuit comprises an input circuit (10) for generating the difference in voltage between a positive input signal and a negative input signal; a feedback bias circuit (20) for providing a bias voltage corresponding to the differential voltage signal in response to the differential voltage signal supplied by the input circuit (10) and for feeding the output current back to control the bias voltage; an output circuit (30) for supplying load with the output current corresponding to the bias voltage; and a current detector circuit (40) for detecting the output current and supplying it to the feedback bias circuit (20). The differential amplifier circuit performs as a class-AB amplifier with the bias current value being close to zero if the differential voltage signal is zero.
摘要翻译：差分放大电路包括用于产生正输入信号和负输入信号之间的电压差的输入电路（10）反馈偏置电路（20），用于响应于由输入电路（10）提供的差分电压信号提供对应于差分电压信号的偏置电压，并且用于馈送输出电流以控制偏置电压; 输出电路（30），用于向与所述偏置电压相对应的输出电流提供负载; 以及用于检测输出电流并将其提供给反馈偏置电路（20）的电流检测器电路（40）。如果差分电压信号为零，则差分放大器电路执行AB类放大器，其偏置电流值接近零。

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