公开(公告)号：EP1958330A2

公开(公告)日：2008-08-20

申请号：EP06825547.0

申请日：2006-10-04

申请人： Analog Devices, Inc.

发明人： BROKAW, Paul, A. ,  LI, Yuxin

IPC分类号： H03K3/011 ,  H03K3/354 ,  H03K3/355

CPC分类号： H03K3/011 ,  H03K3/354 ,  H03K3/355

摘要： A timing circuit operates by applying an arbitrary voltage across a resistance (Rl) , and using the resulting current to generate a charging current which charges and/or discharges a capacitance (Cl) to an endpoint voltage. Additional circuitry is arranged such that the capacitance (Cl) is charged and/or discharged until its voltage crosses a threshold which is proportional to one of the resistance's endpoint voltages, such that the capacitance's endpoint voltage tracks the resistance's endpoint voltage. Thus, the resistor voltage can vary with supply voltage or temperature, or the resistance value itself can vary, without materially affecting the timing relationships. The arbitrary voltage is preferably provided with a pair of diode-connected transistors (MPl, MNl) connected in series with the resistance (Rl) , so that a single transistor operated at the same current density as one of the diode-connected transistors establishes the threshold voltage and detects when the capacitor voltage reaches the threshold.

公开(公告)号：EP1955437A1

公开(公告)日：2008-08-13

申请号：EP06825546.2

申请日：2006-10-04

申请人： Analog Devices, Inc.

发明人： BROKAW, Paul, A.

IPC分类号： H03F1/52 ,  H03F3/45 ,  H03F3/347 ,  H03F3/42 ,  H03F3/50

CPC分类号： H03F3/45278 ,  H03F1/3211 ,  H03F1/34 ,  H03F1/52 ,  H03F3/343 ,  H03F3/3435 ,  H03F3/345 ,  H03F3/42 ,  H03F3/4578 ,  H03F3/50 ,  H03F2200/426 ,  H03F2200/45 ,  H03F2200/91 ,  H03F2203/45526 ,  H03F2203/45722

摘要： A small signal amplifier with a large signal output boost stage are connected between first and second supply rails. The small signal amplifier receives first and second input signals and provides an output signal at an output node which drives a load. Under small signal conditions, the output signal varies approximately linearly with the difference voltage. However, under large signal conditions, a rail-to-rail large signal output boost stage connected to the output node is arranged to drive the output node close to the first or second supply rail as needed to provide the current demanded by the load. The large signal output boost stage is off in small signal conditions, but comes on rapidly and transfers maximum charge to the load under large signal conditions.

摘要翻译： 具有大信号输出升压级的小信号放大器连接在第一和第二电源轨之间。 小信号放大器接收第一和第二输入信号，并在驱动负载的输出节点处提供输出信号。 在小信号条件下，输出信号随差电压大致线性变化。 然而，在大信号条件下，连接到输出节点的轨到轨大信号输出升压级被布置成根据需要驱动靠近第一或第二电源轨的输出节点以提供负载所要求的电流。 大信号输出升压级在小信号条件下处于关断状态，但是在大信号条件下能够快速传送到负载的最大电荷。