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Voltage sampler driver with enhanced high-frequency gain

  • US 10,003,315 B2
  • Filed: 01/25/2017
  • Issued: 06/19/2018
  • Est. Priority Date: 01/25/2016
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a voltage sampler driver configured to generate an output differential current from at least a first and a second differential current, the voltage sampler driver comprising;

    an input differential branch pair configured to receive a set of input signals, each branch of the differential branch pair comprising one or more transistors configured to generate the first differential current;

    an offset voltage branch pair configured to receive, at an input, an offset voltage control signal, each branch of the offset differential branch pair comprising one or more transistors configured to generate the second differential current;

    an amplifier stage connected to the voltage sampler driver, the amplifier stage configured to generate a differential output voltage based on the output differential current; and

    a high-pass filter configured to supplement a high-frequency component of the second differential current by injecting a high-pass filtered version of the set of input signals into the input of the offset voltage branch pair.

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