公开(公告)号：WO02088862B1

公开(公告)日：2003-02-20

申请号：PCT/US0203150

申请日：2002-01-31

Applicant: ANALOG DEVICES INC

Inventor： WURCER SCOTT ,  PIERDOMENICO JOHN W

IPC: H02M3/07 ,  H03F1/02 ,  H03F3/70 ,  G05F1/10 ,  G05F3/02

CPC classification number: H03F1/0222 ,  H03F2200/504

Abstract: An amplifier system with on-demand power supply boost includes an amplifier circuit (26) for receiving an input signal and a charge pump (12) connected to positive and negative power supplies (Vcc, Vref) and having predetermined supply voltages and being responsive to the input signal for increasing beyond the predetermined supply voltages the supply voltage applied to the amplifier in response to an increase in the input signal and a tracking charge pump usable in the amplifier system which includes a charge storage device (20, 24); a unidirectional isolation device (18, 22) interconnecting the charge storage device and one pole of a power supply; a driver circuit (60) responsive to an input signal and interconnected between both poles of the power supply; the power supply having predetermined power supply voltages; and a bias circuit (28) for biasing the driver circuit to charge the charge storage device in the charge mode and in the boost mode, for increasing beyond the predetermined power supply voltages, the supply voltage supplied by the storage device to an external load in response to an increase in the input signal.

Abstract translation: 具有按需电源升压的放大器系统包括用于接收输入信号的放大器电路（26）和连接到正和负电源（Vcc，Vref）的电荷泵（12），并具有预定的电源电压并响应于 所述输入信号响应于输入信号的增加而增加超过预定电源电压的施加到放大器的电源电压，以及可用于包括电荷存储装置（20,24）的放大器系统中的跟踪电荷泵。 互连电荷存储装置和电源的一极的单向隔离装置（18,22）; 驱动器电路（60），其响应于输入信号并在所述电源的两极之间互连; 所述电源具有预定的电源电压; 以及用于偏置驱动电路以在充电模式和升压模式下对电荷存储装置充电的偏置电路（28），用于超过预定电源电压，由存储装置提供给外部负载的电源电压 响应于输入信号的增加。

公开(公告)号：WO01024471A1

公开(公告)日：2001-04-05

申请号：PCT/US2000/026220

申请日：2000-09-25

IPC: H03F3/70 ,  H03H19/00 ,  H04J1/00 ,  H04L27/26 ,  H03D3/00

CPC classification number: H03H19/004

Abstract: A multiple channel signal processing circuit receives an input associated with a first channel and an input associated with a second channel. The respective inputs are sampled and processed by the circuit, which generates a sampled output signal for the first channel and a sampled output signal for the second channel. The circuit employs a shared active circuit component, such as an operational amplifier, to alternately process samples associated with the first and second channels. A network of switches are controlled by a multiphase clock signal such that the active circuit component processes samples associated with only one channel at a time; as the input for a first channel is being sampled, a previous sample for the second channel is processed. An alternate circuit embodiment may be utilized to reduce the amount of crosstalk between the channels.

Abstract translation: 多信道信号处理电路接收与第一信道相关联的输入和与第二信道相关联的输入。 相应的输入被电路采样和处理，该电路产生用于第一通道的采样输出信号和用于第二通道的采样输出信号。 电路采用诸如运算放大器之类的共享有源电路部件交替地处理与第一和第二通道相关联的采样。 交换机网络由多相时钟信号控制，使得有源电路组件一次处理仅与一个信道相关联的样本; 当第一通道的输入被采样时，处理第二通道的先前采样。 可以利用替代电路实施例来减少通道之间的串扰量。