DocumentationDatasheet
Reliability Data
cad_symbol
Features
- Guaranteed 10 ppm/°C temperature coefficient
- Guaranteed 1.0 ohms max. dynamic impedance
- Guaranteed 20µV max. wideband noise
- Wide operating current range 0.6mA to 15mA
Typical Application
Description
Most H (Metal Can), J (Ceramic), and K (Metal Can) Packages from Linear Technology Are Now Obsolete
Download Complete Datasheet for Details
The LM129 temperature compensated 6.9 Volt zener references provide excellent stability over time and temperature, very low dynamic impedance and a wide operating current range. The device achieves low dynamic impedance by incorporating a high gain shunt regulator around the zener. The excellent noise performance of the device is achieved by using a "buried zener" design which eliminates surface noise phenomenon associated with ordinary zeners.
To serve a wide variety of applications, the LM129 is available in several temperature coefficient grades and two package styles. A 20mA positive current source application is shown below.
TO-92
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LM329AZ#PBF | TO-92 | 3 | C | $2.65 | $2.05 |
| LM329BZ#PBF | TO-92 | 3 | C | $1.80 | $1.35 |
| LM329BZ#TRPBF | TO-92 | 3 | C | $1.41 | |
| LM329CZ#PBF | TO-92 | 3 | C | $1.80 | $1.35 |
| LM329AZ | TO-92 | 3 | C | $5.30 | $4.10 |
| LM329BZ | TO-92 | 3 | C | $3.60 | $2.70 |
| LM329BZ#TR | TO-92 | 3 | C | $2.82 |
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.