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LM199 Scheda tecnica(PDF) 3 Page - Linear Technology |
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LM199 Scheda tecnica(HTML) 3 Page - Linear Technology |
3 / 8 page LM199/LM399 LM199A/LM399A 3 LM199399fb Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The substrate is electrically connected to the negative terminal of the temperature stabilizer. The voltage that can be applied to either terminal of the reference is 40V more positive or 0.1V more negative than the substrate. Note 3: These specifications apply for 30V applied to the temperature stabilizer and –55°C ≤ TA ≤ 125°C for the LM199; and 0°C ≤ TA ≤ 70°C for the LM399. Reverse Characteristics Dynamic Impedance Stabilization Time ELECTRICAL CHARACTERISTICS Note 4: Devices with maximum guaranteed long-term stability of 20ppm/√kH are available. Drift decreases with time. Note 5: This initial current can be reduced by adding an appropriate resistor and capacitor to the heater circuit. See the Typical Performance Characteristics graphs to determine values. Note 6: Guaranteed by “Reverse Breakdown Change with Current.” TYPICAL PERFOR A CE CHARACTERISTICS HEATER ON TIME (SECONDS) 0 –1 0 1 16 LM199 G03 –2 –3 –4 4 8 12 20 TA = 25°C VH = 15V TA = –55°C Initial Heater Current Heater Current Heater Current TURN ON TEMPERATURE ( °C) –55 0 50 150 200 250 –15 25 45 125 LM199 G04 100 –35 5 65 85 105 VH = 40V TEMPERATURE ( °C) –55 40 60 105 LM199 G05 20 0 –15 25 65 –35 5 45 85 80 VH = 10V VH = 20V VH = 40V VH = 30V TIME (SECONDS) 0 160 140 120 100 80 60 40 20 0 16 LM199 G06 4 8 12 14 2 6 10 18 VH = 10V VH = 20V TA = 25°C VH = 30V VH = 40V REVERSE VOLTAGE (V) 6.25 0.01 0.1 1 10 100 6.45 6.65 LM199 G01 6.85 7.05 TJ = 25°C STABILIZED (TJ ≈ 90°C) FREQUENCY (Hz) 10 0.1 10 100 100 1k 10k 100k LM199 G02 1 TJ = 25°C STABILIZED (TJ ≈ 90°C) |
Codice articolo simile - LM199_1 |
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Descrizione simile - LM199_1 |
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