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AM26C32

ANCY MUHAMMED
Prodigy 160 points
Other Parts Discussed in Thread: AM26C32

I am using AM26C32 IC inorder to convert differential signals coming from a length of 1 m cable in another unit. We are developing a power supply which delivers upto 1000W. The power is delivered only when the output of AM26C32 is high. Whether we have to make the ground common for both boards. The proper working is occured only when we make the ground common. If the ground shorted wire is long we saw  a glitch in the output waveform of AM26C32 . The termination resistor used is 220ohm in between the two differential signals and 1kohm resistor in series with both diferential signals

  • 0
    TI__Guru*** 140026 points
    Ancy,

    Yes, the two boards must share a common ground. The AM26C32 allows for only up to a few volts difference between the grounds. This changes the common mode voltage which must be within +/-7V.

    The 1k resistors will reduce the differential signal a little.
    When does the glitch occur?