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Product Detailed Parameters
- Description：LM4041-N PRECISION MICROPOWER SH
- Series：-
- Mfr：National Semiconductor
- Package：Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：1.225V
- Voltage - Output (Max)：-
- Current - Output：12 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The LM4041BIZ-1.2/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed output voltage of 1.225 V with an initial tolerance of ±0.2% at 25°C. The device operates within a temperature range of -40°C to +85°C and features low output noise of 20 μV rms (10 Hz to 10 kHz). It consumes a maximum quiescent current of 45 µA and supports a maximum operating current of 12 mA. The component is housed in a TO-92 (LP) package.
Feature Summary
- Precision micropower shunt voltage reference design
- Fixed 1.225 V output voltage option
- Low output noise performance for sensitive circuits
- Compact TO-92 (LP) plastic package
Applications
- Battery-powered instrumentation systems
- Portable measurement devices
- Data acquisition systems requiring stable references
- Microcontroller analog-to-digital converter references
Procurement Notes
Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix 'NOPB' indicates lead-free compliance and RoHS adherence. Ensure the package type matches the required TO-92 (LP) footprint for PCB layout compatibility. Check the grade marking to confirm the ±0.2% tolerance variant rather than the ±0.1% A-grade version.
Selection Notes
Select this component when a fixed 1.225 V reference is required with minimal power consumption. The ±0.2% tolerance suits applications where moderate accuracy is sufficient. Consider the TO-92 package for through-hole mounting requirements. Compare against the LM4041AIZ-1.2/NOPB if tighter ±0.1% initial tolerance is necessary for the specific application constraints.
Part Context
This part belongs to the LM4041-N family of precision micropower shunt voltage references. The family includes adjustable versions and various fixed voltage options. The 'B' suffix typically denotes the ±0.2% tolerance grade, distinguishing it from the higher precision 'A' grade variants. The device serves as a stable voltage baseline for analog signal processing chains.
Replacement Considerations
LM4041AIZ-1.2/NOPB offers tighter ±0.1% tolerance but shares the same package and electrical characteristics otherwise. LM4041BIM7X-1.2/NOPB provides the same electrical performance in a smaller SC-70 surface-mount package.
