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Analog Devices Inc./Maxim Integrated LM4040AEM3-5.0/V+
- Part No.:
- LM4040AEM3-5.0/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040AEM3-5.0/V+.pdf
- Description:
- IMPROVED PRECISION MICROPOWER SH
- Quantity:
- Payment:
- Shipping:
Inventory:1,638
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Product details
Overview
LM4040AEM3-5.0/V+ from Maxim Integrated is a precision 5.000V two-terminal shunt voltage reference in SC70-3 package, featuring 0.1% initial accuracy, ±100ppm/°C temperature coefficient, and guaranteed operation from −40°C to +125°C. It delivers stable reverse-breakdown voltage with 60μA–15mA shunt current capability and low 80μVRMS wideband noise (10Hz–10kHz), ideal for high-reliability automotive sensor signal conditioning.
For engineers reviewing the LM4040AEM3-5.0/V+ datasheet, LM4040AEM3-5.0/V+ pinout, LM4040AEM3-5.0/V+ application, or LM4040AEM3-5.0/V+ equivalent, key selection criteria include AEC-Q100 qualification, no-output-capacitor stability, ultra-small SC70 footprint, and tight tolerance over extended temperature range.
Technical Context
The LM4040AEM3-5.0/V+ uses laser-trimmed bandgap circuitry to maintain precise 5.000V reverse breakdown across its cathode-anode terminals. Its internal architecture eliminates need for external stabilization capacitors while remaining stable under any capacitive load.
Designed for automotive-grade operation, it guarantees performance over −40°C to +125°C with 0.1% initial accuracy and ±100ppm/°C max tempco at 1mA operating current - meeting stringent requirements for engine control units and ADAS power monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±5.0mV at +25°C (0.1% grade); ensures accurate ADC reference for 12-bit systems |
| Initial Accuracy | ±0.1% (max) at +25°C; enables single-point calibration in production test |
| Tempco | ±100ppm/°C (max) over −40°C to +125°C; limits drift to ±50mV across full range |
| Shunt Current Range | 60μA to 15mA; supports low-power battery sensing and high-current regulation without external components |
| Wideband Noise | 80μVRMS (10Hz–10kHz); minimizes error in precision analog front-ends |
| Dynamic Impedance | 0.5Ω to 1.1Ω at 1mA; maintains voltage stability during fast load transients |
| AEC-Q100 Grade | Qualified per AEC-Q100 Rev G for automotive applications; validated for harsh environment reliability |
Pinout & Package
LM4040AEM3-5.0/V+ uses the 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23. Pin 3 is NC and must be left unconnected or tied to pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Cathode | Reverse-biased terminal; connects to regulated supply rail for shunt reference operation |
| 2 (−) | Anode | Reference ground node; forms return path for shunt current and defines output voltage reference point |
| 3 (N.C.) | No Connection | Must remain floating or shorted to pin 2; no internal connection - avoids parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Validated for automotive use per Rev G; supports functional safety-critical subsystems |
| No Output Capacitor Required | Internally compensated for unconditional stability with any capacitive load - reduces BOM count and board space |
| Ultra-Small SC70 Package | 1.8mm × 1.8mm footprint enables placement in dense ECU modules and compact sensor nodes |
| Low 80μVRMS Noise | Enables high-resolution data acquisition in 16-bit SAR ADC references without additional filtering |
| Extended Temperature Range | −40°C to +125°C operation allows direct mounting on powertrain PCBs near heat sources |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Provides stable 5.000V reference for analog-to-digital conversion of throttle position, coolant temperature, and oxygen sensor signals in engine management systems. IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing precision voltage baseline for ratiometric sensor measurements. Use Value: Maintains ±0.1% accuracy across −40°C to +125°C, eliminating recalibration needs in under-hood environments. | Use Scenario: Supplies reference voltage for 4–20mA transmitter circuits in pressure, flow, and temperature transmitters deployed in factory automation. IC Role / Device Role / Timing Role: Shunt-mode voltage reference regulating loop-powered transmitter output stage. Use Value: Stable 60μA–15mA operating range accommodates varying loop loads while maintaining <1.1Ω dynamic impedance. |
| Portable Medical Instrumentation | High-Reliability Data Acquisition Systems |
Use Scenario: Powers precision analog front-end in handheld blood glucose meters and portable ECG monitors requiring long battery life and clinical-grade accuracy. IC Role / Device Role / Timing Role: Micropower shunt reference enabling ultra-low quiescent current design (<60μA minimum operating current). Use Value: 80μVRMS noise and ±100ppm/°C tempco ensure sub-0.1% measurement repeatability across ambient temperature shifts. | Use Scenario: Serves as primary reference for multi-channel 16-bit data loggers used in structural health monitoring and environmental sensing. IC Role / Device Role / Timing Role: High-stability voltage reference for successive-approximation register (SAR) ADCs in isolated measurement systems. Use Value: No-output-capacitor stability simplifies layout and eliminates capacitor aging effects that degrade long-term accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | 3-terminal adjustable shunt regulator; 2.5V base reference; requires external resistors for 5V setting; higher 120ppm/°C tempco | Used where programmable output or tighter output tolerance at lower cost is acceptable; not AEC-Q100 qualified | Select when flexibility in output voltage outweighs need for automotive qualification and fixed-voltage simplicity |
| ADR4550BRZ | 5.0V series voltage reference; SOIC-8 package; 3ppm/°C tempco; 12μVRMS noise; requires input bypass capacitor | Suitable for high-precision instrumentation where ultra-low noise and drift are critical; incompatible with shunt topology constraints | Choose for metrology-grade systems needing <10ppm total error budget - but only if board space and topology allow series configuration |
Compared with TLVH431ACDBVR and ADR4550BRZ, LM4040AEM3-5.0/V+ uniquely combines AEC-Q100 qualification, SC70 size, fixed 5.000V output, and zero-output-capacitor operation - making it optimal for space-constrained automotive and industrial shunt-reference designs where layout simplicity and qualification compliance are mandatory.
Availability
LM4040AEM3-5.0/V+ is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor transmitters, portable medical devices, and high-reliability data acquisition systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM4040AEM3-5.0/V+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The LM4040 product line delivers micropower, high-accuracy shunt voltage references optimized for space-constrained, high-reliability systems requiring stable reference voltages without external compensation components.
FAQ
What is the maximum junction temperature rating for LM4040AEM3-5.0/V+?
The LM4040AEM3-5.0/V+ has a maximum junction temperature of +150°C. Its specified operating temperature range is −40°C to +125°C ambient, and thermal design must ensure junction temperature remains within this absolute limit under worst-case power dissipation and board thermal resistance conditions.
Does LM4040AEM3-5.0/V+ require an external output capacitor for stability?
No, LM4040AEM3-5.0/V+ does not require an external output capacitor. Its internal design ensures unconditional stability with any capacitive load, including direct connection to ADC reference inputs or op-amp feedback networks - eliminating capacitor-related aging, leakage, and layout sensitivity.
What is the minimum operating current for LM4040AEM3-5.0/V+ at +125°C?
The minimum operating current for LM4040AEM3-5.0/V+ is 80μA at +125°C, as specified in the Electrical Characteristics table for the 5.000V variant in SC70-3 package. This ensures stable regulation across the full extended temperature range.
How is the /V+ suffix in LM4040AEM3-5.0/V+ interpreted?
The /V+ suffix in LM4040AEM3-5.0/V+ denotes AEC-Q100 qualification per Rev G for automotive applications. It confirms device-level stress testing, failure analysis, and process controls required for deployment in safety-critical vehicle subsystems.
Can LM4040AEM3-5.0/V+ be used in series with a load instead of shunt configuration?
No, LM4040AEM3-5.0/V+ is strictly a two-terminal shunt voltage reference and must be connected in parallel with the load. It regulates by sinking variable current through its cathode-anode path; series (three-terminal) operation is not supported and would result in improper biasing and loss of regulation.
LM4040AEM3-5.0/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040AEM3-5.0/V+ FAQ
1.How can I place an order for LM4040AEM3-5.0/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040AEM3-5.0/V+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM4040AEM3-5.0/V+ reliable?
The price and inventory of LM4040AEM3-5.0/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040AEM3-5.0/V+ is usually 5 days.
3.What payment methods are accepted for LM4040AEM3-5.0/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040AEM3-5.0/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040AEM3-5.0/V+?
LM4040AEM3-5.0/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040AEM3-5.0/V+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM4040AEM3-5.0/V+?
For technical support, including LM4040AEM3-5.0/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040AEM3-5.0/V+ requirements.
6.How does Aetrix verify that LM4040AEM3-5.0/V+ is sourced from the original manufacturer or authorized distributors?
All LM4040AEM3-5.0/V+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM4040AEM3-5.0/V+ meets industry standards.
7.What is the process for return or replacement of LM4040AEM3-5.0/V+?
All LM4040AEM3-5.0/V+ units undergo pre-shipment inspection (PSI). If there is an issue with LM4040AEM3-5.0/V+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM4040AEM3-5.0/V+ part is unused and in its original packaging.
Return procedure for LM4040AEM3-5.0/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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