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LM285S8-2.5 Datasheet(PDF) 1 Page - Linear Technology |
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LM285S8-2.5 Datasheet(HTML) 1 Page - Linear Technology |
1 / 8 page 1 LM185-2.5/ LM285-2.5/LM385-2.5 APPLICATIO S DESCRIPTIO FEATURES TYPICAL APPLICATIO Micropower Voltage Reference s Portable Meter References s Portable Test Instruments s Battery-Operated Systems s Panel Meters s Current Loop Instrumentation s 20 µA to 20mA Operating Range s Guaranteed 1% Initial Voltage Tolerance s Guaranteed 1 Ω Dynamic Impedance s Very Low Power Consumption The LM185-2.5 is a two-terminal band gap reference diode that has been designed for applications which require precision performance with micropower opera- tion. The device provides guaranteed operation specifica- tions at currents as low as 20 µA. The nominal voltage is 2.5V with both 1% and 2% tolerances available. Some additional features are: maximum dynamic impedance of 1 Ω, low noise and excellent stability over time and tem- perature. The advanced design, processing and testing techniques make Linear’s LM185-2.5 a superior choice over previous designs. A circuit for cold junction compen- sation of a thermocouple is shown below. For applications requiring guaranteed temperature drift, see the LT1034 data sheet. REVERSE CURRENT (mA) 0 4 8 12 16 0.01 1 10 100 LM185-2.5 TA02 –4 0.1 –55 °C ≤ TA ≤ +125°C Reverse Voltage Change Thermocouple Cold Junction Compensator RSET 2k 450 Ω VIN 10k ADJUST FOR 12.17mV AT 25 °C ACROSS 450 Ω V– 16k 950 Ω LM385-2.5 100k W.W. ZERO 1M 2 MERCURY CELLS 2.6V METER + – TYPE K LM185-2.5 TA01 IQ ≈ 50µA LM334 , LTC and LT are registered trademarks of Linear Technology Corporation. |
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