Datasheet Analog Devices LM129

LM129/LM329
6.9V Precision
Voltage Reference
Features Description n n n The LM®329 temperature compensated 6.9V 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. n Guaranteed 10ppm/°C Temperature Coefficient
Guaranteed 1Ω Maximum Dynamic Impedance
Guaranteed 20µV Maximum Wideband Noise
Wide Operating Current Range: 0.6mA to 15mA Applications Transducers A/D and D/A Converters
n Calibration Standards
n Instrumentation Reference L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners. Typical Application
20mA Positive Current Source Reverse Voltage Change 20V 8
20k …