AM502

Tektronix AM502
differential amplifier Tektronix AM502 Produced from 1974 to (?) Manuals AM502 Instruction Manual 070-1582-00 AM502 Instruction Manual 070-1582-01 AM502 Main Circuit Board Replacement Mod (All manuals in PDF format unless noted otherwise)

The Tektronix AM502 is a differential amplifier plug-in for the TM500 system.

The differential amplifier design is a variant of the 1A7A circuit, also used with modifications in the 3A9, 7A22, 5A22N, and 5030/5031 (26A2 too?).

Key Specifications

Bandwidth	1 MHz, LF limit switchable DC, 0.1 Hz to 10 kHz in ×10 steps, HF limit switchable 100 Hz to 1 MHz in ×3/×10 steps, AC coupled > 2 Hz
Gain	×1 to ×1000 (÷ 100 mode) / ×100 to ×100,000 in 1–2–5 sequence, variable to min. ×2.5 calibrated setting
Input impedance	1 MΩ // 47 pF (either input)
Input voltage	15 V DC+peak AC up to 5 MHz, 350 V DC+peak AC up to 5 MHz in ÷ 100 mode
Common mode	±5 V, ±50 V in ÷ 100 mode
DC offset	±1 V
Noise	typ. 6 nV/√Hz above 1 kHz (Norm mode)
Output voltage	±5 V into ≥250 Ω

Document	Class	Title	Authors	Year	Links
Tekscope 1972 V4 N5 Sep 1972.pdf	Article	A Practical Approach to Differential Amplifiers and Measurements	Fred Beckett	1972	112 • 11A33 • 1A5 • 1A6 • 1A7 • 1A7A • 26A2 • 3A9 • 5A22N • 7A13 • 7A22 • AM502 • D • E • G • P6055 • P6046 • W • Z
Tekscope 1972 V4 N6 Nov 1972.pdf	Article	Differential Amplifiers and Measurements, Part 2	Fred Beckett	1972	112 • 11A33 • 1A5 • 1A6 • 1A7 • 1A7A • 26A2 • 3A9 • 5A22N • 7A13 • 7A22 • AM502 • D • E • G • P6055 • P6046 • W • Z
070-2088-01.pdf	Book	TM500 Series Rear Interface Data Book		1976	AF501 • AM501 • AM502 • AM511 • DC501 • DC502 • DC503 • DC504 • DC505 • DC505A • DD501 • DM501 • DM502 • FG501 • FG502 • FG503 • FG504 • LA501 • MR501 • PG501 • PG502 • PG505 • PG506 • PG508 • PS501 • PS502 • PS503 • PS503A • PS505 • RG501 • SC501 • SC502 • SG502 • SG503 • SW503 • SW504 • TG501 • TR501 • TR502

Part	Part Number(s)	Class	Description	Used in
151-1027-00	151-1027-00	Discrete component	dual N-channel JFET	5031 • 3A9 • AM502