What is a MBS373CAEF

Discussion in 'General Electronics Chat' started by hamopp, Nov 7, 2013.

  1. hamopp

    Thread Starter Active Member

    May 13, 2009
    68
    1
    Hi all

    I have a Samsung RMUP76855BB(A) modulator from a thomson sky+ box (stb)
    It has a antenna input and two RF outputs, one of the outputs can have +9v
    on it to power a remote sender unit, so that i can control downstairs box from
    upstairs.

    I was thinking of using it to send a signal from the composite video\audio output
    from my sky+ HD box to send it to a tv upstairs, my sky+ HD box do not have any
    antenna input or RF outputs, only hdmi or scart sockets .

    Now to this Samsung modulator, it has 7 pins on the base, these are:
    Pin 1 = TTL
    Pin 2 = 9v
    Pin 3 = Audio
    Pin 4 = Sda
    Pin 5 = B+
    Pin 6 = Scl
    Pin 7 = Video
    And it has this chip MBS373CAEF, i have looked all over the net and not able to
    find out what it is, from it having a SDA and SCL lines, it looks like it is controlled via I2C.

    Can anyone help
    Thanks
    Howard
     
  2. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    5,003
    745
  3. #12

    Expert

    Nov 30, 2010
    16,346
    6,831
    I can find that part number but it keeps coming up as a sop-16.
    Can't seem to pry a datasheet out of anybody.
     
  4. hamopp

    Thread Starter Active Member

    May 13, 2009
    68
    1
    Hi all
    Thanks for that datasheet Dodgydave :)

    Now i know what this is, can anyone help me with
    trying to work out how to control this thing ?
    I think that i would need to use a mcu of some kind.

    I would want the UHF oscillator output set to one UK
    channel eg:E36 (591.25 MHz) PAL standard.

    Thanks again for the help.

    Howard
     
  5. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    5,003
    745
    You need to work out how to use the I2C data address, this sets the chip up with the desired parameters, uhf output channel, audio carrier which is 6Mhz for PAL I in UK.
     
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