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Product Detailed Parameters
- Description：IC VREF SHNT -2.43%/+2.02% 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：0°C ~ 70°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 LM385M-1.2/NOPB is a micropower voltage reference diode manufactured by Texas Instruments, housed in an 8-pin SOIC surface-mount package. It provides a nominal output voltage of 1.235 V with an initial accuracy of ±2%. The device operates within a temperature range of 0°C to +70°C and features a maximum shunt current of 20 mA. It belongs to the LM385-adj series and utilizes bipolar technology for stable two-terminal voltage referencing.
Feature Summary
- Micropower voltage reference design suitable for low-power applications
- Adjustable shunt reference topology for flexible circuit integration
- Surface-mount SOIC-8 packaging for automated assembly compatibility
Applications
- Precision measurement systems requiring stable reference voltages
- Data acquisition circuits utilizing analog-to-digital conversion
- Battery-powered instrumentation benefiting from low current consumption
Procurement Notes
Verify the specific suffix configuration against the manufacturer's latest documentation to ensure compliance with RoHS standards and lead-free requirements. Confirm that the SOIC-8 package dimensions align with the target PCB footprint. Cross-reference the part number with official Texas Instruments databases to validate availability and distinguish between obsolete variants and active production units.
Selection Notes
Select this component when a compact surface-mount solution is required for precision voltage referencing. The ±2% initial accuracy suits general-purpose applications where tighter tolerances are unnecessary. Ensure the operating environment remains within the commercial temperature range of 0°C to +70°C. Consider the 20 mA maximum shunt current limit when designing biasing networks for the reference diode.
Part Context
This part belongs to the LM385 family of micropower voltage references, which includes variants like the LM185 and LM285. These devices serve as two-terminal zener-based references. The LM385M-1.2/NOPB specifically adapts the 1.235 V reference function into a surface-mount format, replacing through-hole options like the TO-92 packages found in other family members.
Replacement Considerations
Public confirmed substitute part numbers include LM385M-1.2, LM385M-12, and LM385M-12-NOPB. Verify pinout compatibility and electrical specifications before substitution.
