M694

The Tektronix M694 is an amplifier monolithic integrated circuit designed by John Addis.

The M694 is an M377, just with a more relaxed specification for DC balance.

An M377 that doesn't quite meet its DC balance spec can be a fully acceptable M694. This was used as a cost-cutting technique for applications that don't require tight DC balance.

The M694 is used as the output amplifier in the AM503A and the AM503B. (165-2456-00)

The 11A16 dual-channel current probe amplifier plug-in 11A16 uses the M377.

The M694 is also used in the TDS420 and TDS460.

Some instruments using part M694

Instrument	Manufacturer	Class	Model	Description	Introduced
TDS420	Tektronix	Oscilloscope	TDS420	150 MHz 4-ch digital scope	1991
TDS460	Tektronix	Oscilloscope	TDS460	400 MHz, 100 MS/s portable digital scope	1991