LT1009IZ#PBF

Voltage Reference Overview

The LT1009IZ#PBF is a precision trimmed 2.5V shunt regulator diode manufactured by Analog Devices Inc. It features an initial tolerance of 0.2% and a maximum temperature coefficient of 35ppm/°C. The device operates within a supply voltage range up to 35V and supports a shunt current range from 400μA to 10mA. It is housed in an 8-lead SOIC package and functions as a two-terminal voltage reference with an optional third terminal for ±5% adjustment.

Voltage Reference Feature Summary

• Precision on-chip trimming ensures minimal initial voltage tolerance and low temperature drift.
• Low dynamic impedance enhances versatility across varying load conditions.
• Third terminal allows reference voltage calibration to compensate for system errors.

Voltage Reference Applications

• Pin-to-pin replacement for LM136 without external trim network modifications
• Reference voltage source for A/D and D/A converters
• Digital voltmeter circuits

Voltage Reference Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and compliance status. Confirm availability through authorized distributors, as stock levels may vary. Ensure the component meets RoHS requirements if applicable to your design specifications before finalizing procurement.

Voltage Reference Selection Notes

Select this component when a stable 2.5V reference with high initial accuracy is required. Consider the 35ppm/°C temperature coefficient for thermal stability needs. The adjustable terminal provides flexibility for calibrating out system errors, making it suitable for applications demanding precise voltage regulation without complex external circuitry.

Voltage Reference Part Context

The LT1009 series consists of precision trimmed 2.5V shunt regulators designed for high-accuracy applications. These devices offer superior performance compared to standard zener diodes, featuring low dynamic impedance and wide operating current ranges. The series includes various packages to suit different integration requirements while maintaining consistent electrical characteristics.

Voltage Reference Replacement Considerations

The LT1009 can serve as a pin-to-pin replacement for the LM136, allowing designers to eliminate external trim networks. Verify compatibility with existing circuit constraints before substitution.