LT1236BIS8-10#PBF

Voltage Reference Overview

The LT1236BIS8-10#PBF is a precision voltage reference from Analog Devices, featuring a buried zener diode structure for low noise and high stability. It provides a nominal output of 10V with an initial accuracy of ±0.05% and a maximum temperature coefficient of 5ppm/°C. The device operates within an industrial temperature range of -40°C to +85°C and is housed in an 8-lead SOIC package. It supports both series and shunt modes, sourcing and sinking up to 10mA while maintaining immunity to input voltage variations.

Voltage Reference Feature Summary

• Utilizes a buried zener diode architecture to eliminate surface breakdown noise and ensure superior long-term stability compared to band-gap references.
• Capable of operating in either series or shunt configurations, allowing the 10V version to function as a two-terminal shunt regulator with identical precision characteristics.
• Designed without high-power on-chip heaters, achieving excellent accuracy and temperature coefficient specifications through intrinsic structural design.

Voltage Reference Applications

• A/D and D/A converters
• Precision regulators
• Precision scales
• Inertial navigation systems
• Digital voltmeters

Voltage Reference Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature range (-40°C to +85°C) and 'S8' denotes the SOIC-8 package. Confirm the '#PBF' designation indicates lead-free compliance. Ensure the datasheet electrical characteristics match the required line and load regulation for the target application environment.

Voltage Reference Selection Notes

Select this component when ultra-low drift and noise are critical requirements for system accuracy. The buried zener technology offers better time stability than standard band-gap references. Consider the trim pin availability for fine-tuning output voltage if higher resolution than the factory trim allows is necessary for the specific circuit topology.

Voltage Reference Part Context

This part belongs to the LT1236 family of precision references, which combines low drift with high output accuracy. The family includes variants with different voltage outputs (5V and 10V), accuracy grades (A, B, C), and temperature ranges. The LT1236 is pin-compatible with older AD586 and AD587 references, facilitating direct upgrades in existing designs.

Voltage Reference Replacement Considerations

LT1236BCS8-10#PBF

Voltage Reference FAQ

Can the LT1236BIS8-10#PBF be used as a shunt regulator?

Yes, the 10V version can be used as a shunt regulator (two-terminal zener) with the same precision characteristics as the three-terminal connection.

What is the purpose of the TRIM pin on the LT1236-10?

The TRIM pin allows for adjusting the output voltage. It has an impedance of about 12kΩ and is designed to be driven from a source impedance of 3kΩ or less to minimize changes in the temperature coefficient during trimming.