公开(公告)号：US11063794B2

公开(公告)日：2021-07-13

申请号：US16833177

申请日：2020-03-27

申请人： Analog Devices International Unlimited Company

发明人： Hajime Shibata ,  Brian Holford ,  Trevor Clifford Caldwell ,  Siddharth Devarajan

IPC分类号： H03M1/12 ,  H04L25/06 ,  H04L12/26 ,  H04L27/156 ,  G11C27/02 ,  G11C7/22 ,  G01R13/34

摘要： A continuous-time sampler has series-connected delay lines with intermediate output taps between the delay lines. Signal from an output tap can be buffered by an optional voltage buffer for performance. A corresponding controlled switch is provided with each output tap to connect the output tap to an output of the continuous-time sampler. The delay lines store a continuous-time input signal waveform within the propagation delays. Controlling the switches corresponding to the output taps with pulses that match the propagation delays can yield a same input signal value at the output. The continuous-time sampler effectively “holds” or provides the input signal value at the output for further processing without requiring switched-capacitor circuits that sample the input signal value onto some capacitor. In some cases, the continuous-time sampler can be a recursively-connected delay line. The continuous-time sampler can be used as the front end sampler in a variety of analog-to-digital converters.