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LM169

National Semiconductor
Part Number LM169
Manufacturer National Semiconductor
Description Precision Voltage Reference
Published Mar 22, 2005
Detailed Description LM169 LM369 Precision Voltage Reference December 1994 LM169 LM369 Precision Voltage Reference General Description The ...
Datasheet PDF File LM169 PDF File

LM169
LM169

Overview
LM169 LM369 Precision Voltage Reference December 1994 LM169 LM369 Precision Voltage Reference General Description The LM169 LM369 are precision monolithic temperaturecompensated voltage references They are based on a buried zener reference as pioneered in the LM199 references but do not require any heater as they rely on special temperature-compensation techniques (Patent Pending) The LM169 makes use of thin-film technology enhanced by the discrete laser trimming of resistors to achieve excellent Temperature coefficient (Tempco) of Vout (as low as 1 ppm C) along with tight initial tolerances (as low as 0 05% max) The trim scheme is such that individual resistors are cut open rather than being trimmed (partially cut) to avoid resistor drift caused by electromigration in the trimmed area The LM169 also provides excellent stability vs changes in input voltage and output current (both sourcing and sinking) The devices have a 10 000V output and will operate in either series or shunt mode the output is short-circuit-proof to ground A trim pin is available which permits fine-trimming of Vout and also permits filtering to greatly decrease the output noise by adding a small capacitor (0 05 to 0 5 mF) Features Y Y Y Y Y Y Y Y Low Tempco 3 ppm C g 5 mV Excellent initial accuracy Excellent line regulation 4 ppm V g 0 8X Excellent output impedance Excellent thermal regulation g 20 ppm 100 mW Low noise Easy to filter output noise Operates in series or shunt mode (max) (max) (max) (max) (max) Applications Y Y Y Y Y High-Resolution Data Acquisition Systems Digital volt meters Weighing systems Precision current sources Test Equipment Connection Diagrams Metal Can Package (H) Dual-In-Line Package (N) or S O Package (M) TL H 9110 – 5 Top View Order Number LM369DM LM369DMX LM369N LM369BN LM369CN or LM369DN See NS Package Number M08A or N08E X denotes 2500 units on Tape and Reel and is not included in the device part number marking TL H 9110 – 1 Top View (Case is connected t...


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