公开(公告)号：JPH11298299A

公开(公告)日：1999-10-29

申请号：JP35977998

申请日：1998-12-17

Applicant: MICROCHIP TECH INC

Inventor： NOLAN JAMES B ,  DARMAWASKITA HARTONO

IPC: H03B5/04 ,  H03B5/20 ,  H03K3/011 ,  H03K3/0231 ,  H03L1/02

Abstract: PROBLEM TO BE SOLVED: To provide a buffer oscillator with which a stable clock frequency can be maintained independently of a temperature. SOLUTION: A precise relaxation oscillator 1 having temperature compensation generates the stable clock frequency over the wide fluctuation of a surrounding temperature. This oscillator has a vibration generator 100 and two independent current generators 200. The outputs of two programmable independent current generators are coupled for supplying a capacitor charging current independent of the temperature. The precise relaxation oscillator 1 having the temperature compensation is provided on a single monolithic integrated circuit.

公开(公告)号：DE602005023011D1

公开(公告)日：2010-09-30

申请号：DE602005023011

申请日：2005-04-15

Applicant: MICROCHIP TECH INC

Inventor： LEE THOMAS YOUBOK ,  NOLAN JAMES B ,  VERNIER STEVE ,  YACH RANDY ,  LAMPHIER ALAN

IPC: H04B1/16 ,  B60R25/00 ,  G06K19/07 ,  G07C9/00

公开(公告)号：DE602005010849D1

公开(公告)日：2008-12-18

申请号：DE602005010849

申请日：2005-04-15

Applicant: MICROCHIP TECH INC

Inventor： LEE THOMAS YOUBOK ,  NOLAN JAMES B ,  VERNIER STEVE ,  LOURENS RUAN ,  DELPORT VIVIEN ,  LAMPHIER ALAN ,  SULLIVAN GLEN ALLEN

IPC: G06K19/07 ,  G07C9/00

Abstract: A multi-channel remote keyless entry (RKE) transponder having dynamically re-configurable input channel selection, channel disable, settable sensitivity for each channel, wake-up filter timing parameters, automatic gain control hold, internal tuning capacitor selection for each channel's antenna, minimum modulation depth requirement for input signal and bi-directional talk-back. Programmable minimum modulation depth requirement reduces false wake-up of the RKE transponder. An antenna for each channel of the RKE transponder may be tuned with internal tuning capacitors for improved range and receiver sensitivity. The internal tuning capacitor parameters may be stored in a configuration register. Gain of the channel may be fixed while the antenna is tuned. The antennas may be de-queued for talk-back to a base station for low frequency bi-directional communications. An external control device may dynamically read from and write to the configuration registers via a serial communications interface.

公开(公告)号：WO2005104006A3

公开(公告)日：2006-03-30

申请号：PCT/US2005012934

申请日：2005-04-14

Applicant: MICROCHIP TECH INC ,  NOLAN JAMES B ,  LEE THOMAS YOUBOK ,  LAMPHIER ALAN ,  LOURENS RUAN ,  VERNIER STEVE

Inventor： NOLAN JAMES B ,  LEE THOMAS YOUBOK ,  LAMPHIER ALAN ,  LOURENS RUAN ,  VERNIER STEVE

IPC: G06K7/00 ,  G06K19/07 ,  G07C9/00 ,  H04Q5/22

CPC classification number: G06K19/0705 ,  G06K19/0723 ,  G07C9/00309 ,  G07C2009/0038

Abstract: A bidirectional remote keyless entry (RKE) transponder comprises an analog front-end (AFE) having a programmable wake-up filter that predefines the waveform timing of the desired input signal, minimum modulation depth requirement of input signal, and independently controllable channel gain reduction of each of its three channels, X, Y, and Z. The wake-up filter parameters are the length of high and low durations of wake-up pulses that may be programmed in a configuration register. The wake-up filter allows the AFE to output demodulated data if the input signal meets its wake-up filter requirement, but does not output the demodulated data otherwise. The AFE output pin is typically connected to an eternal device for control, such as a microcontroller (MCU). The external device typically stays in low current sleep (or standby) mode when the AFE has no output and switches to high current wake-up (or active) mode when the AFE has output. Therefore, in order to keep the eternal control device in the low current sleep mode when there is no desired input signal, it is necessary to keep no output at the AFE output pin. This can be achieved by controlling the wake-up filter parameters, minimum modulation depth requirement of input signal, and. channel gains of the AFE device. These features can reduce false-wake up of the bidirectional RKE transponder due to undesired input signals such as noise signals.

Abstract translation: 双向远程无钥匙进入（RKE）转发器包括具有可编程唤醒滤波器的模拟前端（AFE），其预定义所需输入信号的波形定时，输入信号的最小调制深度要求以及独立可控的信道增益减小 的三个通道中的每一个，X，Y和Z.唤醒滤波器参数是可以在配置寄存器中编程的唤醒脉冲的高和低持续时间的长度。 唤醒滤波器允许AFE在输入信号满足唤醒滤波器要求时输出解调数据，否则不输出解调数据。 AFE输出引脚通常连接到用于控制的永久性设备，例如微控制器（MCU）。 当AFE没有输出时，外部设备通常保持在低电流休眠（或待机）模式，并且当AFE输出时，外部设备切换到高电流唤醒（或有效）模式。 因此，为了在不需要输入信号的情况下将永久控制装置保持在低电流睡眠模式，需要在AFE输出引脚处不输出。 这可以通过控制唤醒滤波器参数，输入信号的最小调制深度要求来实现。 AFE设备的通道增益。 这些功能可以减少由于不期望的输入信号（如噪声信号）引起的双向RKE转发器的假唤醒。

公开(公告)号：WO0201575A3

公开(公告)日：2002-05-02

申请号：PCT/US0120188

申请日：2001-06-25

Applicant: MICROCHIP TECH INC

Inventor： NOLAN JAMES B ,  BAKER BONNIE ,  KRANZ GLEN

IPC: G11C17/18 ,  G11C7/18 ,  H03K17/687

CPC classification number: G11C17/18 ,  H01L2924/0002 ,  H01L2924/00

Abstract: An analog electronic component, includes input and output pins, analog devices and non-volatile fuses. The analog devices are operative to perform analog signal processing on signals received via at least one input pin and to output processed signals on at least one output pin. The analog devices include adjustable elements. The non-volatile fuses are coupled to the adjustable processing elements and are electrically programmable via at least some of the input pins. Programming the non-volatile fuses adjusts the adjustable elements to alter characteristics of the analog signal processing.

Abstract translation: 模拟电子组件包括输入和输出引脚，模拟器件和非易失性熔断器。 模拟设备可操作来对通过至少一个输入引脚接收的信号执行模拟信号处理，并在至少一个输出引脚上输出经处理的信号。 模拟设备包括可调节元件。 非易失性熔断器耦合到可调节的处理元件并且可以经由至少一些输入引脚电学编程。 对非易失性熔断器进行编程可调整可调元件以改变模拟信号处理的特性。

公开(公告)号：WO0201708A3

公开(公告)日：2002-05-30

申请号：PCT/US0120191

申请日：2001-06-25

Applicant: MICROCHIP TECH INC

Inventor： NOLAN JAMES B ,  BAKER BONNIE

IPC: H03F3/45

CPC classification number: H03F3/45771

Abstract: An operational amplifier is trimmed electrically using non-volatile fuses. The non-volatile fuses may be programmed electrically without destroying any passivation layers or other devices on the electronic component. In the case of an integrated circuit analog component, the trimming may be performed either at the wafer level or at the packaging level. The trimming may be performed specifically to adjust the quiescent current or offset voltage of the operational amplifier.

Abstract translation: 运算放大器使用非易失性熔断器进行电子微调。 非易失性熔丝可以被电编程而不破坏电子元件上的任何钝化层或其他器件。 在集成电路模拟组件的情况下，可以在晶圆级或封装级进行修整。 调整可以专门执行以调整运算放大器的静态电流或偏移电压。

公开(公告)号：WO0201720A3

公开(公告)日：2002-04-25

申请号：PCT/US0120189

申请日：2001-06-25

Applicant: MICROCHIP TECH INC

Inventor： NOLAN JAMES B ,  ALEXANDER SAMUEL

IPC: G11C16/04 ,  G11C16/10 ,  H03K3/356

CPC classification number: G11C16/0441 ,  G11C16/10 ,  H03K3/356008

公开(公告)号：WO0076069A3

公开(公告)日：2001-07-26

申请号：PCT/US0028180

申请日：2000-04-26

Applicant: MICROCHIP TECH INC

Inventor： NOLAN JAMES B ,  ELLISON RYAN SCOTT

IPC: G05F3/24 ,  H03B5/04 ,  H03B5/20 ,  H03K3/011 ,  H03K3/0231 ,  H03L1/02 ,  H03K3/03 ,  H03K3/66

CPC classification number: H03K3/0231 ,  G05F3/245 ,  H03K3/011

Abstract: Several calibration techniques for a precision relaxation oscillator with temperature compensation produces a stable clock frequency over wide variations of ambient temperature. The calibration techniques provide for different methods of determining CTAT current, PTAT current or the ratio of PTAT current to CTAT current. The calibration techniques provide different methods for determining CTAT and PTAT calibration values and for setting CTAT and PTAT calibration select switches.

Abstract translation: 具有温度补偿的精密弛豫振荡器的几种校准技术在环境温度的宽泛变化下产生稳定的时钟频率。 校准技术提供了确定CTAT电流，PTAT电流或PTAT电流与CTAT电流的比例的不同方法。 校准技术为确定CTAT和PTAT校准值以及设置CTAT和PTAT校准选择开关提供了不同的方法。

公开(公告)号：WO2008011370A2

公开(公告)日：2008-01-24

申请号：PCT/US2007073593

申请日：2007-07-16

Applicant: MICROCHIP TECH INC ,  NOLAN JAMES B ,  BLAKE KUMEN

Inventor： NOLAN JAMES B ,  BLAKE KUMEN

CPC classification number: H03F3/45986

Abstract: Two nulling amplifiers are used with an auto-zeroed differential amplifier. While one nulling amplifier is compensating the main amplifier, the other nulling amplifier is being zeroed for both differential mode (DM) and common mode (CM) offsets. By using two nulling amplifiers, one always connected to the main amplifier, a relatively constant open- loop gain is maintained for the main amplifier. A further improvement is make-before-break timing overlap of the switch operations between the two nulling amplifiers and the main amplifier. This ensures that the main amplifier is continuously driven by one or both null amplifiers, thereby maintaining a low impedance at the main amplifier auxiliary port. Both DM and CM offset sampling and precharging of each of the two nulling amplifiers is performed so as to substantially reduce switching glitches in the output of the main amplifier.

Abstract translation: 两个归零放大器与自动归零差分放大器一起使用。 虽然一个零点放大器正在补偿主放大器，但另一个零点放大器对于差模（DM）和共模（CM）偏移都进行了归零。 通过使用两个零点放大器，一个总是连接到主放大器，为主放大器保持相对恒定的开环增益。 进一步的改进是两个置零放大器和主放大器之间的开关操作的断断续续定时重叠。 这确保主放大器由一个或两个零放大器连续驱动，从而在主放大器辅助端口保持低阻抗。 对两个零位放大器中的每一个进行DM和CM偏移采样和预充电以实质上减少主放大器的输出中的切换毛刺。

公开(公告)号：WO0036745A9

公开(公告)日：2000-11-23

申请号：PCT/US9928910

申请日：1999-12-06

Applicant: MICROCHIP TECH INC

Inventor： NOLAN JAMES B ,  ELLISON RYAN SCOTT ,  PYSKA MICHAEL S

IPC: H03B5/04 ,  H03B5/20 ,  H03K3/011 ,  H03K3/0231 ,  H03L1/02 ,  H03K3/66

CPC classification number: H03K3/0231 ,  H03K3/011

Abstract: A precision relaxation oscillator with temperature compensation produces a stable clock frequency over wide variations of ambient temperature. The invention has an oscillation generator (100), two independent current generators (200, 300), a transition detector (400) and a clock inhibiter (500). The outputs of the two programmable, independent current generators are combined to provide a capacitor charging current which is independent of temperature. The precision relaxation oscillator is capable of three modes of operation: fast mode, slow/low power mode and sleep mode. The precision relaxation oscillator with temperature compensation and various operating modes is implemented on a single, monolithic integrated circuit.

Abstract translation: 具有温度补偿的精密张弛振荡器可在环境温度变化很大的情况下产生稳定的时钟频率。 本发明具有振荡发生器（100），两个独立的电流发生器（200,300），转换检测器（400）和时钟禁止器（500）。 两个可编程独立电流发生器的输出相结合，可提供与温度无关的电容充电电流。 精密张弛振荡器具有三种工作模式：快速模式，慢速/低功耗模式和睡眠模式。 具有温度补偿和各种工作模式的精密张弛振荡器在单个单片集成电路上实现。