公开(公告)号：US5471175A

公开(公告)日：1995-11-28

申请号：US296056

申请日：1994-08-24

申请人： Kwok-Fu Chiu ,  Don R. Sauer

发明人： Kwok-Fu Chiu ,  Don R. Sauer

IPC分类号： H03F1/52 ,  H03F3/30 ,  H03F3/345 ,  H03F3/45 ,  H03F3/04

CPC分类号： H03F3/45278 ,  H03F1/523 ,  H03F3/3032 ,  H03F3/345 ,  H03F3/45192 ,  H03F3/45654 ,  H03F2200/555 ,  H03F2203/45006 ,  H03F2203/45028 ,  H03F2203/45064 ,  H03F2203/45082 ,  H03F2203/45208 ,  H03F2203/45552

摘要： An improved input protection circuit receiving a differential signal has a small signal input circuit and a large signal input circuit. The small signal input circuit is active when the differential input signal has a magnitude not exceeding a predetermined value. The large signal input circuit is active when the differential input signal has a magnitude exceeding the predetermined value. Because the small signal input circuit does not see a large differential signal across the gate terminals of its input transistors, offset voltage ("V.sub.os ") drift is avoided resulting in enhanced circuit reliability. A switch circuit isolates the small signal input circuit when the large signal input circuit is active.

摘要翻译： 接收差分信号的改进的输入保护电路具有小信号输入电路和大信号输入电路。 当差分输入信号的幅度不超过预定值时，小信号输入电路是有效的。 当差分输入信号具有超过预定值的幅度时，大信号输入电路有效。 由于小信号输入电路在其输入晶体管的栅极端子之间没有看到大的差分信号，因此避免了偏移电压（“Vos”）漂移，从而提高了电路的可靠性。 当大信号输入电路有效时，开关电路隔离小信号输入电路。

公开(公告)号：US5525934A

公开(公告)日：1996-06-11

申请号：US295135

申请日：1994-08-24

申请人： Kwok-Fu Chiu ,  Don R. Sauer

发明人： Kwok-Fu Chiu ,  Don R. Sauer

IPC分类号： H03F1/52 ,  H03F3/30 ,  H03F3/45 ,  H03K5/24 ,  H03K5/08

CPC分类号： H03F3/45479 ,  H03F1/523 ,  H03F3/3032 ,  H03F3/45192 ,  H03F3/45659 ,  H03F3/45677 ,  H03K5/2481 ,  H03F2200/555 ,  H03F2203/45648

摘要： An output stage of a CMOS comparator is designed to have a limited short circuit current, while maintaining maximum output voltage swing and a low quiescent current. The output stage includes a reference voltage generation circuit, which generates a gate voltage at the output transistor of limited range, so that the short circuit current of the output transistor is limited. In one embodiment, the reference voltage is generated by a plurality of serially connected diodes.

摘要翻译： CMOS比较器的输出级被设计为具有有限的短路电流，同时保持最大输出电压摆幅和低静态电流。 输出级包括参考电压产生电路，其在有限范围的输出晶体管处产生栅极电压，使得输出晶体管的短路电流受到限制。 在一个实施例中，参考电压由多个串联连接的二极管产生。

公开(公告)号：US5471172A

公开(公告)日：1995-11-28

申请号：US296057

申请日：1994-08-24

申请人： Kwok-Fu Chiu ,  Don R. Sauer

发明人： Kwok-Fu Chiu ,  Don R. Sauer

IPC分类号： H03F1/52 ,  H03F3/30 ,  H03F3/45

CPC分类号： H03F3/45278 ,  H03F1/523 ,  H03F3/3032 ,  H03F3/45192 ,  H03F3/45654

摘要： An AB Cascode amplifier provides low quiescent current operation, while maintaining the high gain and wide bandwidth of prior art folded cascode amplifier. Instead of fixed current sources, the AB cascode amplifier uses variable current sources, which are biased by a fixed small current source and two variable biased transistor.

摘要翻译： AB串行放大器提供低静态电流操作，同时保持现有技术的折叠共源共栅放大器的高增益和宽带宽。 AB级联放大器代替固定电流源，使用可变电流源，它们由固定的小电流源和两个可变偏置晶体管偏置。

公开(公告)号：US07339755B2

公开(公告)日：2008-03-04

申请号：US11284380

申请日：2005-11-21

申请人： Don R. Sauer

发明人： Don R. Sauer

IPC分类号： G02B27/02

CPC分类号： G02B7/002 ,  G02B25/002

摘要： A ring device is adapted for wearing on at least one finger of a user. The ring device includes a wearable main body portion and an optical member that is moveably affixed thereto. The optical member can be positioned in at least two positions: a viewing position, and a storage position. The optical member may be moved relative to the main body portion through a number of positioning mechanisms including: a hinged member, a sliding member, and a rotating member. The viewing position may include any number positions for viewing an object in a field of view. The storage position corresponds to an alignment of the optical member with the main body such that the device is aesthetically pleasing. A face of the main body may include an insignia or other decorative design that is viewable through the optical member, and may optionally be removable by the user.

摘要翻译： 戒指装置适于佩戴在使用者的至少一根手指上。 环形装置包括可穿戴主体部分和可移动地固定到其上的光学部件。 光学构件可以位于至少两个位置：观察位置和存储位置。 光学构件可以通过多个定位机构相对于主体部分移动，包括：铰链构件，滑动构件和旋转构件。 观看位置可以包括用于在视野中观看对象的任何数量位置。 存储位置对应于光学构件与主体的对准，使得该装置在美学上令人愉快。 主体的表面可以包括可通过光学构件观看的徽章或其他装饰性设计，并且可以可选地由使用者去除。

公开(公告)号：US06677808B1

公开(公告)日：2004-01-13

申请号：US10222131

申请日：2002-08-16

申请人： S. Chen Sean ,  Don R. Sauer

发明人： S. Chen Sean ,  Don R. Sauer

IPC分类号： G05F110

CPC分类号： G05F3/30

摘要： A voltage reference circuit is arranged in a CMOS process based technology to provide a configurable voltage reference. The voltage reference includes bipolar transistors that are implemented as parasitic devices in the CMOS process. Two of the bipolar transistors are configured to generate a &Dgr;Vbe signal in the voltage reference circuit. An error amplifier cooperates with the two bipolar transistors via a control signal such that the control signal is related to &Dgr;Vbe/R. A first current source is coupled to another bipolar device, which is parallel connected to a resistor divider. The output of the resistor divider provides a divided reference signal that is related to the Vbe of the other bipolar device. Another resistor is coupled between a second current source and the output of the resistor divider such that an adjustable/temperature compensated reference signal is provided.

摘要翻译： 基于CMOS工艺的电压参考电路被布置以提供可配置的电压参考。 该参考电压包括在CMOS工艺中实现为寄生器件的双极晶体管。 两个双极晶体管被配置为在电压参考电路中产生DeltaVbe信号。 误差放大器通过控制信号与两个双极晶体管配合使得控制信号与DeltaVbe / R相关。 第一电流源耦合到并联连接到电阻分压器的另一双极器件。 电阻分压器的输出提供与另一个双极器件的Vbe相关的分频参考信号。 另一个电阻耦合在第二电流源和电阻分压器的输出端之间，从而提供可调/温度补偿的参考信号。

公开(公告)号：US06456123B1

公开(公告)日：2002-09-24

申请号：US09633923

申请日：2000-08-08

申请人： Dale A. Oakeson ,  Don R. Sauer

发明人： Dale A. Oakeson ,  Don R. Sauer

IPC分类号： H03K500

CPC分类号： H03K5/15026 ,  H03K5/249

摘要： A translation circuit for transferring a differential voltage to a ground referenced voltage includes a differential input circuit, a sample/hold (S/H) circuit, and a compensation circuit. The S/H circuit includes a S/H capacitor, a series capacitor and a switch. The S/H and series capacitors are connected in series between an output line and a source of ground potential (GROUND). The switch shorts the bottom electrode of the S/H capacitor to GROUND when executing a translation operation. The differential input circuit receives the differential voltage and selectively provides the differential voltage across the S/H capacitor so that the top and bottom electrodes of the S/H capacitor have voltages V+ and V−, respectively. Parasitic capacitance tends to add charge to the S/H capacitor during the translation operation. The compensation circuit compensates for parasitic capacitance by removing, ideally, the same amount of charge from the S/H capacitor by the end of the translation operation.

摘要翻译： 用于将差分电压传送到接地参考电压的转换电路包括差分输入电路，采样/保持（S / H）电路和补偿电路。 S / H电路包括S / H电容器，串联电容器和开关。 S / H和串联电容器串联连接在输出线和地电位（GROUND）之间。 执行翻译操作时，开关将S / H电容器的底部电极短路到GROUND。 差分输入电路接收差分电压，并选择性地提供跨越S / H电容器的差分电压，使得S / H电容器的顶部和底部电极分别具有电压V +和V-。 寄生电容在平移操作期间往往会向S / H电容器增加电荷。 补偿电路通过在平移操作结束时，理想地从S / H电容器移除相同量的电荷来补偿寄生电容。

公开(公告)号：US4379208A

公开(公告)日：1983-04-05

申请号：US206336

申请日：1980-11-13

申请人： Tim D. Isbell ,  Don R. Sauer

发明人： Tim D. Isbell ,  Don R. Sauer

IPC分类号： H04H1/00 ,  H04H20/49 ,  H04H5/00

CPC分类号： H04H20/49

摘要： In an AM stereo radio receiver, a pilot signal is recovered from the phase modulated channel. The pilot signal is sensed by means of a bandpass filter tuned to the subaudible signal frequency and is used to operate a detector-switching amplifier combination. The switching amplifier actuates a visual indicator which shows the presence of a stereo broadcast. The receiver is provided with an electronic blend function that operates in response to the pilot signal and an excess phase signal that is present when the receiver is mistuned. OR Logic, which responds to either mistuning or a lack of stereo pilot signal, switches the receiver to monaural response. If desired, further OR Logic can include response to weak signals, in which case an improvement in signal to noise ratio is achieved.

摘要翻译： 在AM立体声无线电接收机中，从相位调制信道中恢复导频信号。 导频信号通过调谐到次要信号频率的带通滤波器来感测，并用于操作检测器开关放大器组合。 开关放大器启动显示立体声广播存在的视觉指示器。 接收器具有电子混合功能，其响应于导频信号而工作，并且在接收机失灵时存在多余相位信号。 OR逻辑响应失调或缺少立体声导频信号，将接收机切换为单声道响应。 如果需要，另外OR逻辑可以包括对弱信号的响应，在这种情况下，可以实现信噪比的提高。

公开(公告)号：US06608526B1

公开(公告)日：2003-08-19

申请号：US10124938

申请日：2002-04-17

申请人： Don R. Sauer

发明人： Don R. Sauer

IPC分类号： H03F318

CPC分类号： H03F3/3028 ,  H03F2203/30096 ,  H03F2203/30129

摘要： An output stage for an operational amplifier includes a dynamically activated CMOS drive circuit that is arranged to improve the drive characteristics of the operational amplifier. The output stage includes bipolar transistors that are arranged to clamp the signal swing at an intermediary node in the operational amplifier. The bipolar transistors activate respective portions of the CMOS drive circuit based on the signal drive at the intermediary node. The CMOS driver circuit includes a p-type field effect transistor that sources additional current into the output signal when active, and an n-type field effect transistor that sinks additional current from the output terminal when active. The output stage may include additional circuitry to ensure that parasitic capacitances associated with the gates of the p-type field effect transistor and the n-type field effect transistors are discharged at appropriate times such that power consumption is reduced and high-speed operation is enhanced.

摘要翻译： 用于运算放大器的输出级包括动态激活的CMOS驱动电路，其布置成改善运算放大器的驱动特性。 输出级包括被配置为在运算放大器中的中间节点处钳位信号摆幅的双极晶体管。 双极晶体管基于中间节点处的信号驱动来激活CMOS驱动电路的各个部分。 CMOS驱动器电路包括p型场效应晶体管，其在有源时将附加电流输出到输出信号中;以及n型场效应晶体管，其在激活时吸收来自输出端子的附加电流。 输出级可以包括额外的电路，以确保与p型场效应晶体管和n型场效应晶体管的栅极相关联的寄生电容在适当的时间放电，从而降低功耗并提高高速运行 。

公开(公告)号：US5600283A

公开(公告)日：1997-02-04

申请号：US527400

申请日：1995-09-13

申请人： Don R. Sauer

发明人： Don R. Sauer

IPC分类号： H03K3/0231 ,  H03F3/45

CPC分类号： H03K3/0231

摘要： An oscillator includes a small on-chip floating capacitor having equal parasitic leakages on each of its two plates. The oscillator is fully differential and, being responsive only to differential signals, ignores common mode parasitic leakages of the capacitor. This feature allows for a minimizing of the size of the capacitor as well as enabling the oscillator to operate on purely DC currents which, in turn, allows the output state of the oscillator to toggle without creating current spikes on the supplies. By eliminating these spikes, the oscillator does not suffer from substrate crosstalk problems and thus may be used in mixed signal applications without perturbing the operation of sensitive analog circuitry.

摘要翻译： 振荡器包括在其两个板的每一个上具有相等寄生泄漏的小片上浮动电容器。 振荡器是完全差分的，仅响应于差分信号，忽略电容器的共模寄生泄漏。 该功能允许最小化电容器的尺寸以及使振荡器能够在纯粹的直流电流上工作，这反过来又允许振荡器的输出状态切换而不会在电源上产生电流尖峰。 通过消除这些尖峰，振荡器不会遭受基板串扰问题，因此可以在混合信号应用中使用，而不会扰乱敏感模拟电路的操作。

公开(公告)号：US4523156A

公开(公告)日：1985-06-11

申请号：US517185

申请日：1983-07-25

申请人： Don R. Sauer

发明人： Don R. Sauer

IPC分类号： H03G5/04 ,  H03G9/14 ,  H03G9/16

CPC分类号： H03G9/14 ,  H03G5/04

摘要： A tone control circuit including an amplifier having a continuously adjustable frequency response control for varying the effect of low and high frequency filters upon the amplifier, and incorporating a novel distortion and transient suppression circuit is disclosed. A programmable variable resistance is coupled between an input and an output of said amplifier to attenuate circuit low frequency response while initially varying resistor value in response to a programming distortion/transient control signal. Thereafter, overall amplifier gain is further varied in response to the programming distortion/transient control signal by further adjusting the variable resistor value. Various embodiments of the invention provide both continuous and discrete control of tone and volume responsive to both excessive low frequency signal and transients. The present invention is implemented in both discrete and monolithic embodiments, which include both linear and CMOS technologies.

摘要翻译： 一种音调控制电路，包括具有连续可调的频率响应控制的放大器，用于改变放大器上的低频和高频滤波器的影响，并结合了新的失真和瞬态抑制电路。 可编程可变电阻耦合在所述放大器的输入和输出之间，以便在响应编程失真/瞬态控制信号最初改变电阻值时衰减电路的低频响应。 此后，通过进一步调整可变电阻值，总体放大器增益响应于编程失真/瞬态控制信号而进一步变化。 本发明的各种实施例提供响应于过低的低频信号和瞬变的音调和音量的连续和离散的控制。 本发明在离散和单片实施例中实现，其包括线性和CMOS技术。