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LM329BZ
LM129/LM329 6.9V Precision Voltage Reference U FEATURES s s s s DESCRIPTIO Guaranteed 10ppm/°C Temperature Coefficient Guaranteed 1Ω Maximum Dynamic Impedance Guaranteed 20µV Maximum Wideband Noise Wide Operating Current Range 0.6mA to 15mA U APPLICATIO S s s s s Transducers A/D and D/A Converters Calibration Standards Instrumentation Reference The LM129 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. , LTC and LT are registered trademarks of Linear Technology Corporation. U TYPICAL APPLICATIO 20mA Positive Current Source Reverse Voltage Change 20V 8 – 7 LT1001 3 20k 0.1% 4.3k + REVERSE VOLTAGE CHANGE (mV) 2 LM329 6.95V TA = 25°C 174Ω 0.1% 20k 0.1% 6 4 10k OUT 20mA 129/329 TA01 7 6 5 4 3 2 1 0 0 2 4 8 6 REVERSE CURRENT (mA) 10 129/329 TA01b 1
NS
National Semiconductor Corporation 日本ではナショセミと略称されていたが2011年9月23日、米TI社に買収され、同社のシリコンバレー部門となった。
TI
Texas Instruments Incorporated
U.S.A
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