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LTZ1000ACH-TR Datasheet(PDF) 1 Page - Linear Technology |
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LTZ1000ACH-TR Datasheet(HTML) 1 Page - Linear Technology |
1 / 8 page LTZ1000/LTZ1000A 1 1000afc TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION Ultra Precision Reference The LTZ1000 and LTZ1000A are ultra-stable temperature controllable references. They are designed to provide 7V outputs with temperature drifts of 0.05ppm/°C, about 1.2μVP-P of noise and long-term stability of 2μV/√kHr. Included on the chip is a subsurface zener reference, a heater resistor for temperature stabilization, and a tem- perature sensing transistor. External circuitry is used to set operating currents and to temperature stabilize the reference. This allows maximum flexibility and best long- term stability and noise. The LTZ1000 and LTZ1000A references can provide su- perior performance to older devices such as the LM199, provided that the user implements the heater control and properly manages the thermal layout. To simplify thermal insulation, the LTZ1000A uses a proprietary die attach method to provide significantly higher thermal resistance than the LTZ1000. Low Noise Reference n 1.2μVP-P Noise n 2μV/√kHr Long-Term Stability n Very Low Hysteresis n 0.05ppm/°C Drift n Temperature Stabilized n 400°C/W Thermal Resistance for LTZ1000A Reduces Insulation Requirements n Specified for –55°C to 125°C Temperature Range n Offered in TO-99 package n Voltmeters n Calibrators n Standard Cells n Scales n Low Noise RF Oscillators Long-Term Stability L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. – + LTZ1000 OUTPUT 1N4148 LT ®1006 V IN ≥ 10V 30k 3 7 4 6 2 0.02μF 120Ω 1000 TA01 DAYS 0 –2 0 2 10 LONG-TERM STABILITY OF A TYPICAL DEVICE FROM TIME = 0 WITH NO PRECONDITIONING OR AGING 1000 TA01b 30 20 |
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