Attenuator

  • US 10,630,264 B2
  • Filed: 05/24/2019
  • Issued: 04/21/2020
  • Est. Priority Date: 12/03/2014
  • Status: Active Grant
First Claim
Patent Images

1. An attenuator for attenuating a signal comprising:

  • a differential input port with a positive input node and a negative input node to receive the signal;

    a differential output port with a positive output node and a negative output node to output the attenuated signal;

    a first switched resistor network connected between the positive input node and the positive output node;

    a second switched resistor network connected between the negative input node and the negative output node;

    a first path connected between the positive input node and the negative output node, the first path comprising one or more switched capacitor branches;

    a second path connected between the negative input node and the positive output node; and

    a control circuit to generate control signals for controlling the first and second switched resistor networks.

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