Datasheet LM129, LM329 (Analog Devices)

LM129/LM329 6.9V Precision Voltage Reference
FeaTures DescripTion
n Guaranteed 10ppm/°C Temperature Coefficient The LM®329 temperature compensated 6.9V Zener n Guaranteed 1Ω Maximum Dynamic Impedance references provide excellent stability over time and n Guaranteed 20µV Maximum Wideband Noise temperature, very low dynamic impedance and a wide n Wide Operating Current Range: 0.6mA to 15mA 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
applicaTions
device is achieved by using a “buried Zener” design which n Transducers eliminates surface noise phenomenon associated with n A/D and D/A Converters ordinary Zeners. To serve a wide variety of applications, n Calibration Standards the LM129 is available in several temperature coefficient n Instrumentation Reference grades and two package styles. A 20mA positive current source application is shown below. 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 TA = 25°C 20k 174Ω 7 0.1% 0.1% 6 2 7 5 LM329 – 6.95V 6 LT1001 4 TAGE CHANGE (mV) 3 + 4 3 20k 0.1% 2 10k REVERSE VOL OUT 1 4.3k 20mA 0 129329 TA01 0 2 4 6 8 10 REVERSE CURRENT (mA) 129329 TA01b 129329fd For more information www.linear.com/LM329 1 Document Outline Description Typical Application Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Package Description Typical Application Related Parts