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The '''155-0078-xx''' is a Tek-made broadband vertical amplifier integrated circuit in a [[minipac]] package. | The '''155-0078-xx''' (chip designation ''M84'') is a Tek-made broadband vertical amplifier integrated circuit in a [[minipac]] package. | ||
The input and output are differential. | The input and output are differential. | ||
The 155-0078 was designed by [[John Addis]] for the [[485]] scope <sup>(Note 1)</sup>, which uses no less than 18 of these chips in various grades. | The 155-0078 was designed by [[John Addis]] for the [[485]] scope <sup>(Note 1)</sup>, which uses no less than 18 of these chips in various grades. |