155-0080-00
The 155-0080-00 is a Tek-made Hybrid Vertical Output Amplifier chip in a stud-mounted can. It is used in 100 MHz-class 76xx scopes.
![](http://w140.com/tekwiki/images/thumb/8/8a/Tek155-0080.jpg/450px-Tek155-0080.jpg)
It contains three cascoded differential gain stages, two of which use the "ft doubler" circuit invented by Carl Battjes. Tek's internal name for the die was "M125".
Used in
- 7603 / R7603 (U450)
- 7613 / R7613 (U450)
- 7623 (U450, in non-A version only - 7623A uses discrete vertical amp like 7633)