LM399: Difference between revisions

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|Part_nos=
|Part_nos=
|Description=heated zener reference
|Description=heated zener reference
|Used_in=DM5120;DM5520;Keithley 193A;Keithley 181;
|Used_in=DM5120;DM5520;Keithley 181;Keithley 193A;Keithley 196;
}} in a 4-lead TO-46 metal can.  
}} in a 4-lead TO-46 metal can.  



Revision as of 04:43, 5 June 2024

The National Semiconductor LM399 is a heated zener reference monolithic integrated circuit in a 4-lead TO-46 metal can.

Used in

Some instruments using part LM399

Instrument Manufacturer Class Model Description Introduced
1410 Tektronix Audio/Video 1410 NTSC signal generator 1976
1411 Tektronix Audio/Video 1411 PAL signal generator 1976
1412 Tektronix Audio/Video 1412 PAL-M signal generator 1982
DM5120 Tektronix Plug-in DM5120 programmable 6½-digit multimeter 1989
Keithley 181 Keithley Multimeter 181 5½-digit nanovoltmeter (?)
Keithley 182 Keithley Multimeter 182 6½-digit sensitive voltmeter (?)
Keithley 191 Keithley Multimeter 191 5½-digit multimeter 1979
Keithley 192 Keithley Multimeter 192 6½-digit multimeter 1979
Keithley 193A Keithley Multimeter 193A 6½-digit system multimeter 1985
Keithley 196 Keithley Multimeter 196 6½-digit system multimeter 1986

Data