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Product Detailed Parameters
- Description：IC VREF SHUNT 1% TO92-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 LM285LPRE3-1-2 is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision applications requiring stable voltage regulation. It operates within a temperature range of -40°C to +85°C and utilizes a TO-92-3 through-hole package. The device provides a fixed output voltage of 1.235V with an initial accuracy tolerance of ±1%. Key electrical characteristics include a standard temperature coefficient of 20ppm/°C, a maximum shunt current of 20 mA, and a minimum cathode current of 10 µA. Noise performance is specified at 60µVrms over the 10Hz to 10kHz frequency band.
Feature Summary
- Provides a fixed 1.235V reference voltage with high initial accuracy
- Operates effectively in micro-power applications with low current consumption
- Features low noise characteristics suitable for sensitive analog circuits
- Designed for robust performance across industrial temperature ranges
Applications
- Precision analog-to-digital converter (ADC) reference sources
- Battery-powered instrumentation requiring stable voltage rails
- Temperature sensing circuits utilizing zener-based references
- Portable electronic devices needing compact voltage regulation
Procurement Notes
Verify the specific suffix RE3 indicates RoHS compliance and lead-free status when sourcing. Confirm the TO-92-3 package type matches your PCB footprint requirements. Ensure the ±1% tolerance meets your circuit's precision needs compared to lower-grade variants. Check for any recent Product Change Notifications regarding material or assembly updates that may affect long-term availability or specifications.
Selection Notes
Select this component when a fixed 1.235V reference is required in a through-hole package. Consider the 20ppm/°C temperature coefficient for thermal stability needs. Evaluate the 60µVrms noise specification against your signal integrity requirements. Compare the 20mA max shunt current capability with your circuit's load demands to ensure adequate headroom for regulation.
Part Context
This part belongs to the LM285 family of micropower voltage references from Texas Instruments. It shares functional similarities with the LM385 series but offers specific packaging and tolerance options tailored for cost-sensitive yet precise applications. The LP designation typically indicates a plastic encapsulation variant optimized for general-purpose use.
Replacement Considerations
- LM285LP-1-2
- LM285LPE3-1-2
FAQ
What is the noise specification of the LM285LPRE3-1-2?
The device exhibits a noise level of 60µVrms measured between 10Hz and 10kHz.
Does the RE3 suffix indicate a change in electrical function?
No, the RE3 suffix denotes RoHS compliance and lead-free manufacturing without altering the electrical characteristics or pinout.
