DocumentationDatasheet
Spec Notice
Reliability Data
LT Journal
cad_symbol
Features
- 6.95V Shunt Reference
- Guaranteed 0.5ppm/°C Temperature Coeffi cient
- Guaranteed 1Ω Maximum Dynamic Impedance
- Guaranteed 20µVRMS Maximum Noise
- Guaranteed Initial Tolerance of 2%
- Wide Operating Current Range
- Available in 4-Lead TO-46 Metal Can
Typical Application
Description
The LM199/LM399 precision shunt reference features excellent temperature stability over a wide range of voltage, temperature and operating current conditions. A stabilizing heater is incorporated with the active Zener on a monolithic substrate which nearly eliminates changes in voltage with temperature. The subsurface Zener operates over a current range of 0.5mA to 10mA, and offers minimal noise and excellent long-term stability.
Ideal applications for the LM199/LM399 include digital voltmeters, precision calibration equipment, current sources and a variety of other precision low cost references. A 10V buffered reference application is shown below.
TO-46
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LM399AH#PBF | METAL CANS | 4 | C | $9.37 | $6.56 |
| LM399H#PBF | METAL CANS | 4 | C | $6.64 | $4.65 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.