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DS32EL0421 output impedance 75 ohm single ended

user4766561
Prodigy 170 points
Other Parts Discussed in Thread: DS32EL0421, DS32ELX0421

Hello,

According to the datasheet "the DS32EL0421 and DS32ELX0421 have internal termination resistors".

Has this chip an internal terminations circuits (coil parallel to resistor and capacitor in series) ?

Thanks in advance!

  • 0
    TI__Mastermind 29655 points
    Hi,

    The internal terminations are as specified in p. 7 of the LVDS Electrical Specifications. These input terminations are nominally 100-ohms diferentially across the LVDS inputs. If you are implying a Return-Loss network (inductor in paralle with resistor, followed by capacitor in series), this will need to be added externally.

    The output termination is also just a pair of internal resistors, one for each polarity, and these output terminations can be programmed to be either 50-ohm or 75-ohm.

    Regards,

    Michael