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155-0032-00: Difference between revisions
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The | The '''Tektronix 155-0032-00''' (M55D) is a Tek-made differential amplifier chip in a 16-pin DIP, designed by [[Roy Hayes]]. | ||
Regarding the 155-0032-xx, [[John Addis]] says, | Regarding the 155-0032-xx, [[John Addis]] says, | ||
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As you can see, there are two separate gain selections determined by which set of emitters is chosen, pins 1 and 16 or 2 and 15. | As you can see, there are two separate gain selections determined by which set of emitters is chosen, pins 1 and 16 or 2 and 15. | ||
This selection is made off chip by choosing Q205 or Q215 to carry the current through R212. | This selection is made off chip by choosing Q205 or Q215 to carry the current through R212. | ||
Pot R217 allows dc balance at | Pot R217 allows dc balance at 5 mV/div to match that at all other sensitivities, controlled elsewhere. | ||
</p> | </p> | ||
<p> | <p> | ||
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</p> | </p> | ||
<p> | <p> | ||
The M377 was a single channel plugin on a chip with | The M377 was a single channel plugin on a chip with 0 V common mode input and output voltages, | ||
excellent variable gain control, two four pole bandwidth limits, | excellent variable gain control, two four pole bandwidth limits, | ||
three outputs which could be separately inverted and turned on or off. | three outputs which could be separately inverted and turned on or off. | ||
</p> | </p> | ||
<p> | <p> | ||
It was the first wideband analog IC with level shift on chip (allowing | It was the first wideband analog IC with level shift on chip (allowing 0 V common mode input and output and without PNP transistors), | ||
first wideband amplifier with any on-chip bandwidth limit selection, first to have more than two fixed gain settings (it has six), | first wideband amplifier with any on-chip bandwidth limit selection, first to have more than two fixed gain settings (it has six), | ||
and first to require only one transient response adjustment (no thermals), | and first to require only one transient response adjustment (no thermals), | ||
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* pin 3: input balance | * pin 3: input balance | ||
* pin 4: bias | * pin 4: bias | ||
* pin 5: | * pin 5: −8V | ||
* pin 6: position current source | * pin 6: position current source | ||
* pin 7: ground | * pin 7: ground | ||
* pin 8: signal out | * pin 8: signal out − | ||
* pin 9: signal out + | * pin 9: signal out + | ||
* pin 10: position | * pin 10: position | ||
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* pin 12: norm / -inv | * pin 12: norm / -inv | ||
* pin 13: +5V | * pin 13: +5V | ||
* pin 14: signal in | * pin 14: signal in − | ||
* pin 15: gain switching | * pin 15: gain switching | ||
* pin 16: emitter current source | * pin 16: emitter current source | ||
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[[Category:Tektronix-made integrated circuits]] | [[Category:Tektronix-made monolithic integrated circuits]] | ||