LT1236BCS8-10#TRPBF

Voltage Reference Overview

The LT1236BCS8-10#TRPBF is a precision voltage reference from Analog Devices, featuring a buried zener diode structure for low noise and high stability. It provides a nominal 10V output with an initial accuracy of ±0.05% and a maximum temperature coefficient of 5ppm/°C. The device operates in series or shunt modes, sourcing and sinking up to 10mA. Key electrical parameters include a maximum input voltage of 40V, a minimum input/output differential of 1V, and a supply current of approximately 1.7mA. It is housed in an 8-lead SOIC package.

Voltage Reference Feature Summary

• Combines ultra-low drift and noise with excellent long-term stability using a buried zener diode structure.
• Capable of operating in both series and shunt modes while sourcing and sinking load currents.
• Features a dedicated trim pin for adjusting the output voltage to precise system requirements.
• Designed to minimize thermal regulation effects and temperature-induced hysteresis.

Voltage Reference Applications

• A/D and D/A Converters
• Precision Regulators
• Inertial Navigation Systems
• Digital Voltmeters

Voltage Reference Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm that the BC grade meets the required 0.05% accuracy and 5ppm/°C temperature coefficient specifications for your application. Ensure the SOIC-8 package footprint matches your PCB design constraints. Check for any RoHS compliance documentation if required by your manufacturing standards.

Voltage Reference Selection Notes

Select this component when high precision and low drift are critical for system accuracy. The 10V output is suitable for driving high-resolution converters directly. Consider the trim capability if exact voltage matching is needed. Ensure the operating temperature range of 0°C to 70°C aligns with your environmental conditions. Evaluate the need for series versus shunt mode operation based on your power supply topology.

Voltage Reference Part Context

This part belongs to the LT1236 family of precision references, which also includes 5V versions and other accuracy grades like AC and CC. The LT1236 is pin-compatible with older AD586 and AD587 references, facilitating upgrades. The buried zener technology offers superior performance compared to standard band-gap references in terms of noise and time stability.

Voltage Reference Replacement Considerations

LT1236BCN8-10#PBF (PDIP-8 package)

Voltage Reference FAQ

Can the LT1236-10 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?

The TRIM pin allows for adjusting the output voltage. For the LT1236-10, it has an impedance of about 12kΩ and a nominal open circuit voltage of 5V, allowing for precise calibration.

How does the LT1236 handle capacitive loads?

The LT1236 is stable with all capacitive loads, but for optimum settling with load transients, output capacitance should be under 1000pF.