FEATURES
n Guaranteed 10ppm/°C Temperature Coefficient n Guaranteed 1Ω Maximum Dynamic Impedance n Guaranteed 20µV Maximum Wideband Noise n Wide Operating Current Range: 0.6mA to 15mA APPLICATIONS
n Transducers n A/D and D/A Converters n Calibration Standards n Instrumentation Reference Typical Application 20mA Positive Current Source 20V 20k 0.1% 174Ω 0.1% LM329 6.95V 2– 7 LT1001 3+ 4 20k 0.1% 6 10k 4.3k OUT 20mA 129329 TA01 REVERSE VOLTAGE CHANGE (mV) LM129/LM329 6.9V Precision Voltage Reference DESCRIPTION
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, A 20mA positive current source application is shown below.
Linear Technology
