LTZ1000: Ultra Precision Reference Data Sheet11/9/2015170K
Features and Benefits
- 1.2µVP-P Noise
- 2µV/√kHr Long Term Stability
- Very Low Hysteresis
- 0.05ppm/°C Drift
- Temperature Stabilized
- 400°C/W Thermal Resistance for LTZ1000A Reduces Insulation Requirements
- Speciﬁed for –55°C to 125°C Temperature Range
- Offered in TO-99 package
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 temperature sensing transistor. External circuitry is used to set operating currents and to temperature stabilize the reference. This allows maximum ﬂ exibility and best long term stability and noise.
The LTZ1000 and LTZ1000A references can provide superior 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 signiﬁ cantly higher thermal resistance than the LTZ1000.
- Standard Cells
- Low Noise RF Oscillators
Markets and Technologies
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
R023 Reliability Data3/26/201830 K
AN82 - Understanding and Applying Voltage References2/3/2011168K
AN42 - Voltage Reference Circuit Collection2/3/20111M
AN86 - A Standards Lab Grade 20-Bit DAC with 0.1ppm/° Drift: The Dedicated Art of Digitizing One Part Per Million10/15/2007527K
Tools & Simulations
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
LTZ1000 Companion Parts
Recommended Related Parts
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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