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Product Detailed Parameters
- Description：IC VREF SHUNT 1.5% TO2
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：20 mA
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-46-2 Metal Can
- Supplier Device Package：TO-2
- Grade：-
- Qualification：-
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Overview
The LM185BXH-2.5/NOPB is a precision shunt adjustable voltage reference manufactured by Texas Instruments, housed in a TO-46-2 through-hole package. It provides a fixed output voltage of 2.5 V with an initial accuracy tolerance of ±1.5%. The device supports a maximum shunt current of 20 mA and operates within a temperature range of -55°C to +125°C. Key electrical characteristics include a temperature coefficient of ±150 ppm/°C and a load regulation of 10 mV.
Feature Summary
- Provides stable precision voltage referencing for sensitive analog circuits
- Capable of operation across extended industrial temperature ranges
- Designed for robust performance in radiation environments
Applications
- Radiation-hardened electronic systems requiring precise biasing
- High-reliability instrumentation and measurement equipment
- Military and aerospace power management subsystems
Procurement Notes
Verify the specific suffix 'BH' against the manufacturer's official documentation to confirm pinout compatibility and exact electrical tolerances. Ensure the procurement channel sources components that meet the required RoHS and REACH standards as specified in the datasheet. Confirm lead-free status and packaging type prior to ordering to match assembly requirements.
Selection Notes
Select this component when a fixed 2.5 V reference with high stability is required in a hermetic or ruggedized TO-46 package. Consider the ±150 ppm/°C temperature coefficient for thermal drift analysis. Evaluate the 20 mA maximum current limit against the circuit's load requirements to ensure adequate headroom for proper regulation.
Part Context
This part belongs to the LM185 series of micropower voltage references from Texas Instruments. The series includes both adjustable and fixed voltage variants designed for high-precision applications. The LM185 family is known for its low noise and stability, making it suitable for demanding environments where standard commercial parts may fail.
Replacement Considerations
The LM185H-2.5 is a documented substitute within the same product family. Verify that the alternative meets the same ±1.5% tolerance and TO-46-2 package constraints. Cross-reference radiation hardness specifications if the application involves ionizing environments.
