LM399
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 |