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Product Detailed Parameters
- Description：IC VREF SHUNT 1% TO92-3
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：1.235V
- Voltage - Output (Max)：-
- Current - Output：20 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The LM285Z-1.2#TRPBF is a micropower shunt voltage reference diode manufactured by Analog Devices Inc., belonging to the LM285 series. It provides a nominal reverse breakdown voltage of 1.235V with a guaranteed initial tolerance of 1%. The device operates within a temperature range of -40°C to 85°C and features a maximum dynamic impedance of 1Ω. Designed for low power consumption, it ensures stable performance in portable and battery-operated systems.
Feature Summary
- Guaranteed 1% initial voltage tolerance at room temperature
- Low dynamic impedance of 1Ω maximum
- Micropower operation suitable for current-limited applications
- Excellent long-term stability over time and temperature
Applications
- Portable meter references
- Battery operated systems
- Current loop instrumentation
- Portable test instruments
Procurement Notes
Verify the specific suffix Z indicates the TO-92 plastic package configuration. Confirm the #TRPBF designation corresponds to tape and reel packaging requirements. Ensure the component meets RoHS compliance standards as specified in the manufacturer documentation before finalizing procurement orders.
Selection Notes
Select this component when a precision 1.235V reference is required with tight initial accuracy. It is suitable for designs where low quiescent current and high stability are critical. Consider the operating temperature range limits and package constraints during the schematic capture phase to ensure compatibility with the target PCB layout.
Part Context
This part is part of the LM185/LM285/LM385 family of micropower voltage references. The LM285 variant specifically covers the commercial temperature range of -40°C to 85°C. It serves as a cost-effective solution for general-purpose precision referencing tasks in consumer electronics and industrial instrumentation.
Replacement Considerations
LM385Z-1.2 offers an extended temperature range from 0°C to 70°C. LT1004-1.2 provides higher initial accuracy at 0.3% but may have different noise characteristics. Verify pinout and thermal performance when substituting.
