155-0080-00

155-0080 circuit from 7623 manual

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.

It contains three cascoded differential gain stages, two of which use the "f_t doubler" circuit invented by Carl Battjes. Tek's internal name for the chip was "M125".

Used in

• 7603 / R7603 (U450)
• 7613 / R7613 (U450)
• 7623 (U450, in non-A version only - 7623A uses discrete vertical amp like 7633)

155-0080 case