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Product Detailed Parameters
- Description：IC VREF SHUNT 1% 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- 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：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The LM285BYM-1.2/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, designed for precision applications requiring stable voltage regulation. It provides a fixed output voltage of 1.235 V with an initial accuracy of 1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. It supports a maximum shunt current of 20 mA and a minimum operating current of 10 µA. The component is housed in an SOIC-8 surface-mount package.
Feature Summary
- Provides a fixed 1.235 V reference voltage suitable for high-precision analog circuits
- Operates with extremely low quiescent current starting from 10 µA for battery-powered systems
- Maintains stability across industrial temperatures with a 150 ppm/°C temperature coefficient
Applications
- Portable instrumentation and handheld measurement devices
- Battery-operated data acquisition systems
- Precision analog-to-digital converter (ADC) reference sources
Procurement Notes
Verify the specific suffix 'BYMX' indicates the reel or cut tape packaging variant rather than a functional difference compared to standard tube packages. Confirm RoHS compliance status via the official datasheet before procurement. Ensure the ordering part number matches the required package style for your PCB assembly process.
Selection Notes
Select this component when a fixed 1.235 V reference is required with minimal power consumption. It is suitable for designs where space is limited due to the SOIC-8 package. Consider the 1% initial accuracy and 150 ppm/°C drift if higher precision is needed for critical signal paths.
Part Context
This part belongs to the LM285 series of micropower shunt voltage references. It shares architectural similarities with other variants like the LM285Z and LM285M but offers a fixed 1.235 V output optimized for low-voltage applications. The series is widely used in general-purpose precision reference roles.
Replacement Considerations
LM285BYMX-1.2/NOPB serves as a direct packaging alternative with identical electrical characteristics. Other LM285 variants may require external resistor networks for voltage adjustment.
