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THS7373: THS7373 level shift value

ORondard
Prodigy 20 points

Part Number: THS7373

Hi,

I am currently design a legacy video encoder.

Context :
The system aims to deliver PAL RGB video output, with sync carried on green channel. DAC generates a waveform with sync tip and 300 mV offset on green channel.Blue and red waveforms does not carry synchronization and are not shifted.

Question :
HS7373PW seems to be able to correct this behaviour by shifting waveform by -300 mV
However datasheet tolerance on this offset is quite large (±100 mV), can we expect better performances on real components ?

What distribution of error should we expect on the -40°C to 85°C range ?

 

  • 0
    TI__Genius 13935 points
    Hello ORondard,

    You can expect that real parts will have a distrubtion of offset values that are centered near the Typical number. Different production lots will have slightly different average values. There will be parts near the limit on occasions and there is no way to predict how many parts with this beahviour you will see in a given sample. This specification is 100% tested, so you won't see parts outside of the limits.

    Figure 31 in the datasheet shows the offset over temperature. The drift is very small.

    Regards,
    Loren
  • 0 in reply to Loren Siebert 1
    Prodigy 20 points

    Thanks for the prompt answer.
    However, I received and tested samples today.
    The component add a POSITIVE shift, which is pretty useless to drive DC coupled video lines.

    Regards,

    O. Rondard