AM501

The Tektronix AM501 is a 5 MHz operational amplifier plug-in for the TM500 system.

Manuals – Specifications – Links – Pictures

Also available was the accessory AM501 Auxiliary Circuit Board Kit, Part number: 013-0146-00, described as

The AM501 Auxiliary Circuit Board Kit attaches to the input and output terminals on the front of the AM501 Amplifier. The kit is a PC board has six terminal studs for attachment to the amplifier's banana jacks and is approximately 2.5-inches square. This permits the designer to build a circuit of resistors, capacitors, and other components for use in conjunction with the AM 501's input, output, or feedback circuits. With several boards, the AM 501 Op Amp circuit can be changed instantly in configuration from integrator to differentiator to amplifier.
An additional advantage of the kit is that it does not interfere with the other connectors on the face of the AM501.

Key Specifications

Unity-gain bandwidth	>5 MHz into an 800 Ω load
Open-loop gain	>10000 into an 800 Ω load
CMRR	>10000:1 at 60 Hz
Common-mode input range	±40 V
Maximum input	80 V max. safe differential
Slew Rate	>50 V/μs into an 800 Ω load
Output voltage	> ±40 V
Output current	> ±50 mA

Rear Interface

Connector Pin	Signal
28A	Signal output (common on 27A)
24B	+ Input (common on 25B)
21B	– Input (common on 22B)

Note: None of these connections are factory wired, there are only solder pads for A21–A28 and B21–B28.

Links

• AM501 page @ amplifier.cd

Internals

The amplifier is a discrete FET-input design using some dual transistors. The power supply stacks the two floating 25 V windings on top of the ±33 V supplies and regulates the resulting ±67 V down to ±50 V using two 741 opamps and pass transistors.

Pictures

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Components