CIRCUIT060087

LVDS data and clock recovery circuit with high-speed comparators

CIRCUIT060087

Overview

The LVDS signal restoration circuit is used in digital systems to retrieve distorted clock or data waveforms. These clock and data signals can be attenuated and distorted on long traces due to stray capacitance, stray inductance, or reflections on transmission lines. The comparator is used to sense the attenuated and distorted input signal and convert it into a full scale LVDS output signal. This circuit can also be used to convert from single-ended signals to LVDS signaling. In that case, a dynamic reference voltage is connected to the inverting terminal of the comparator which is extracting the common-mode voltage from the input signal.
Features
  • Supply:
    • Vcc = 5 V
    • Vee = 0 V
  • Attenuated input signal:
    • Vi = 50 mV
    • Vcm = 1.2 V
    • f = 1 GHz
Comparators
LMH7220 High Speed Comparator with LVDS Output TLV3604 800-ps high-speed rail-rail input comparator with LVDS outputs TLV3605 800-ps high-speed rail-rail input comparator with LVDS outputs

Technical documentation

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Type Title Date
* Circuit design LVDS data and clock recovery circuit with high-speed comparators Jun. 03, 2021
User guide LVDS Application and Data Handbook Nov. 26, 2002

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