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Product Detailed Parameters
- Description：TWO TERMINAL VOLTAGE REFERENCE,
- Series：-
- Mfr：National Semiconductor
- Package：Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：4.096V
- Voltage - Output (Max)：-
- Current - Output：15 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 LM4040AIZ-4.1 is a micropower shunt voltage reference manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed output voltage of 4.096 V with an initial accuracy of ±0.1%. The device operates within an industrial temperature range of -40°C to +85°C and features a maximum temperature coefficient of 70 ppm/°C. It utilizes a SOT-23 surface-mount package with three pins. The component supports a maximum cathode current of 15 mA and maintains stability when used with capacitive loads.
Feature Summary
- Provides high precision voltage referencing with ±0.1% initial accuracy
- Operates as a micropower shunt regulator for low current consumption
- Maintains stability under capacitive load conditions
- Designed for industrial temperature environments
Applications
- Precision analog-to-digital converter (ADC) references
- Digital-to-analog converter (DAC) voltage sources
- Battery-powered measurement instrumentation
- Portable test equipment calibration circuits
Procurement Notes
Verify the manufacturer designation carefully, as National Semiconductor assets were acquired by Texas Instruments. Confirm that the specific suffix matches the required accuracy grade and package type. Ensure the sourcing channel provides genuine components from authorized distributors to avoid counterfeit parts. Check for updated datasheets reflecting the transition in manufacturing ownership.
Selection Notes
Select this component when a fixed 4.096 V reference with tight tolerance is required. The ±0.1% accuracy makes it suitable for high-resolution data acquisition systems. Consider the low operating current if power efficiency is critical. Verify that the shunt topology fits the circuit design constraints compared to series regulators.
Part Context
This component belongs to the LM4040 family of micropower shunt voltage references. The family offers various fixed output voltages and accuracy grades. The 'A' suffix typically denotes the highest precision tier within the standard lineup. The 'IZ' indicates the SOT-23 surface-mount package variant.
Replacement Considerations
LM4040AIM3-4.1: Texas Instruments equivalent in SOT-23 package with identical electrical specifications.
