LM385-1.2

FEATURES s 10µA to 20mA Operating Range s Guaranteed 1% Initial Voltage Tolerance s Guaranteed 1Ω Dynamic Impedance s Very Low Power Consumption U APPLICATIO S s Portable Meter References s Portable Test Instruments s Battery Operated Systems s Current Loop Instrumentation TYPICAL APPLICATIO U U LM185-1.2/ LM285-1.2/LM385-1.2 Micropower Voltage Reference DESCRIPTIO The LM185-1.2 is a two terminal band gap reference diode that has been designed for applications which require precision performance with micropower operation. The device provides guaranteed operating specifications at currents as low as 10µA. The nominal voltage is 1.235V with both 1% and 2% tolerances available. Some additional features are: maximum dynamic impedance of 1Ω, low noise and excellent stability over time and temperature. Advanced design, processing and testing techniques make Linear’s LM185-1.2 a superior choice over previous designs. A micropower 5V reference application is shown below. For guaranteed TC, micropower references, see the LT1034 data sheet. , LTC and LT are registered trademarks of Linear Technology Corporation. Micropower 5V Reference V+ LM334 V– LM385-1.2 VIN 7V TO 15V R 5.6k 1M 1% 3+ 7 LT1494 2– 4 6 5V 150pF 3.01M 1% 185/285/385 TA01a OUTPUT VOLTAGE CHANGE (mV) Reverse Voltage Change with Current 10 TA = 25°C 8 6 4 2 0 –2 0.01 0.1 1 10 REVERSE CURRENT (mA) 100 185/285/385 TA01b 1 LM185-1.2/ LM285-1.2/LM385-1.2 U WW W ABSOLUTE AXI U RATI GS Operating Tem...