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LTZ1000CH Datasheet(PDF) 3 Page - Linear Technology |
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LTZ1000CH Datasheet(HTML) 3 Page - Linear Technology |
3 / 8 page LTZ1000/LTZ1000A 3 1000afb ZENER CURRENT (mA) 0 60 80 70 50 30 100 90 4.0 40 20 10 0 1.0 0.5 2.0 1.5 3.0 3.5 4.5 2.5 5.0 ZENER ALONE ZENER WITH KELVIN SENSED Q1 1000 G01 FREQUENCY (Hz) 0.1 200 250 300 350 400 1 10 100 150 100 50 0 450 500 ZENER CURRENT = 0.5mA ZENER CURRENT = 4mA 1000 G02 TIME (SECONDS) 0 10 20 30 40 50 60 IZ = 4mA IZ = 0.5mA 1000 G03 DIE TEMPERATURE ABOVE AMBIENT ( °C) 25 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 105 45 65 85 125 95 35 55 75 115 LTZ1000 LTZ1000A 1000 G04 TIME (SECONDS) 125 25 100 75 50 0.1 10 100 1000 0 1 HEATER POWER = 0.3W HEATER POWER = 0.7W LTZ1000 1000 G06 HEATER POWER = 0.5W TIME (SECONDS) 125 25 100 75 50 0.1 10 100 1000 0 1 HEATER POWER = 0.1W HEATER POWER = 0.2W HEATER POWER = 0.3W LTZ1000A 1000 G05 TYPICAL PERFORMANCE CHARACTERISTICS Zener Voltage vs Current Zener Voltage Noise Spectrum Zener Noise Die Temperature Rise vs Heater Power Die Temperature vs Time Die Temperature Rise vs Time PIN FUNCTIONS Pin 1: Heater positive. Must have a higher positive value than Pin 2 and Pin 4. Pin 2: Heater negative. Must have a higher positive value than Pin 4. Must have equal or lower potential than Pin 1. Pin 3: Zener positive. Must have a higher positive value than Pin 4. Pin 4: Substrate and Zener negative. Must have a higher positive value than Pin 7. If Q1 is Zenered (about 7V) a permanent degradation in beta will result. Pin 5: Temperature compensating transistor collector. Pin 6: Temperature sensing transistor base. If the base emitter junction is Zenered (about 7V) the transistor will suffer permanent beta degradation. Pin 7: Emitter of sensing and compensating transistors. Pin 8: Collector of sensing transistor. |
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