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Product Detailed Parameters
- Description：PRECISION MICROPOWER SHUNT VREF
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Bulk
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：4.096V
- Voltage - Output (Max)：-
- Current - Output：15 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-70, SOT-323
- Supplier Device Package：SC-70-3
- Grade：-
- Qualification：-
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Overview
The LM4040DEX3-4.1-T is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated, designed for precision applications requiring stable output voltages in compact surface-mount packages. This component provides a fixed output of 4.096 V with an initial accuracy of 1% and operates within a temperature range from -40°C to +85°C. It features a maximum shunt current of 15 mA and a temperature coefficient of 30 PPM/°C. The device is housed in a SC-70-3 package, suitable for space-constrained designs. As part of the LM4040 series, it offers improved precision and low power consumption, making it ideal for battery-powered systems and portable electronics where accurate voltage referencing is critical.
Feature Summary
- Provides a stable 4.096 V reference voltage with high initial accuracy
- Operates over an extended industrial temperature range (-40°C to +85°C)
- Features low power consumption suitable for battery-powered applications
- Compact SC-70-3 surface-mount package design
Applications
- Battery-powered portable electronic devices
- Precision measurement instrumentation
- Data acquisition systems
- Portable medical equipment
Procurement Notes
Verify the exact manufacturer designation (Analog Devices vs. Maxim Integrated) as branding may vary across production lots. Confirm the package type is SC-70-3 and ensure the temperature grade matches your application requirements (+85°C max). Check RoHS compliance status if required by your manufacturing standards. Cross-reference with official distributor datasheets to confirm pinout and electrical specifications before finalizing procurement.
Selection Notes
Select this component when a 4.096 V reference with 1% accuracy is sufficient for your circuit. Consider the SC-70-3 package size constraints and verify that the 15 mA shunt current capability meets your load requirements. Ensure the operating temperature range aligns with your environmental conditions. Compare against other LM4040 variants if tighter accuracy or different voltage outputs are needed.
Part Context
The LM4040 series represents a family of micropower shunt voltage references known for their precision and low power consumption. The LM4040DEX3-4.1-T specifically belongs to the 'D' accuracy grade, offering 1% initial accuracy. It is part of the broader portfolio of voltage reference solutions provided by Analog Devices/Maxim Integrated, catering to various precision analog applications requiring reliable voltage regulation.
Replacement Considerations
LM4040BIM3-4.1+T offers higher accuracy (0.2%) but similar voltage and package. LM4040AEX3-4.1+T provides even better accuracy (0.1%) and wider temperature range (-40°C to +125°C). LM4040DIX3-4.1+T is a direct equivalent with identical specifications. Verify compatibility with existing PCB footprints and thermal management requirements when substituting.
