LT1236BCN8-10#PBF

Voltage Reference Overview

The LT1236BCN8-10#PBF is a precision shunt voltage reference manufactured by Analog Devices Inc. It provides a nominal output voltage of 10 V with an initial accuracy of 0.05%. The device features a maximum temperature coefficient of 5 ppm/°C and operates within an industrial temperature range from 0°C to +70°C. It supports a maximum shunt current of 10 mA and requires a minimum operating current of 1.1 mA. The unit draws a typical supply current of 800 µA and can withstand input voltages up to 40 V.

Voltage Reference Feature Summary

• Utilizes a buried zener diode structure for superior noise performance and long-term stability compared to surface breakdown devices.
• Capable of sourcing and sinking up to 10 mA in series mode while maintaining high immunity to input voltage variations.
• Designed to minimize thermal regulation effects and temperature-induced hysteresis without requiring on-chip heaters.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'CN8' corresponds to the 8-lead PDIP package and the 'B' grade indicates the 0.05% accuracy class. Confirm the '#PBF' designation ensures lead-free compliance and RoHS adherence as per manufacturer specifications. Cross-reference the full part number against the official datasheet to ensure compatibility with the intended circuit topology and thermal requirements.

Voltage Reference Selection Notes

Select this component when a stable 10 V reference with low drift is required for industrial environments. The 8-lead PDIP package facilitates through-hole mounting. Ensure the application maintains the minimum shunt current of 1.1 mA for proper regulation. Consider the trim pin functionality if precise voltage adjustment is necessary, keeping source impedance constraints in mind.

Voltage Reference Part Context

This device belongs to the LT1236 family of precision references, which are designed to combine ultra-low drift with excellent long-term stability. The family includes variants with different output voltages (5 V and 10 V) and accuracy grades. The LT1236 is pin-compatible with older AD586 and AD587 references, facilitating upgrades in existing designs.

Voltage Reference Replacement Considerations

LT1236BIN8-10#PBF

Voltage Reference FAQ

Can the LT1236BCN8-10#PBF operate in shunt regulator mode?

Yes, the 10 V 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 12 kΩ and is designed to be driven from a source impedance of 3 kΩ or less to minimize changes in the temperature coefficient during trimming.