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Analog Devices Inc./Maxim Integrated LM4050BEM3-4.1/V+T
- Part No.:
- LM4050BEM3-4.1/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BEM3-4.1/V+T.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,884
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Product details
Overview
LM4050BEM3-4.1/V+T from Analog Devices is a precision 4.096V, 0.2% initial accuracy, 50ppm/°C temperature coefficient shunt voltage reference in SC70-3 package. It operates over -40°C to +125°C with 73µA minimum shunt current and 64µVRMS wideband noise (10Hz–10kHz), enabling stable ADC/DAC biasing in automotive sensor modules.
For engineers reviewing the LM4050BEM3-4.1/V+T datasheet, LM4050BEM3-4.1/V+T pinout, LM4050BEM3-4.1/V+T application, or LM4050BEM3-4.1/V+T equivalent, key selection criteria include guaranteed AEC-Q100 qualification, no-output-capacitor stability, and micropower operation down to 73µA - critical for battery-backed instrumentation and high-reliability industrial control systems.
Technical Context
The LM4050BEM3-4.1/V+T implements a laser-trimmed bandgap core with two-terminal shunt topology, delivering fixed 4.096V reverse breakdown voltage without requiring external stabilization capacitors. Its dynamic impedance remains ≤1.0Ω at 1mA, ensuring minimal output voltage shift across 73µA–15mA shunt current range.
Designed for AEC-Q100 Grade 1 compliance, it guarantees ±0.7% total voltage tolerance over -40°C to +125°C (0.2% initial + 50ppm/°C × 100°C), and tolerates any capacitive load while maintaining stability - a key differentiator versus series-mode references requiring output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal at +25°C; ±8.2mV (±0.2%) initial tolerance ensures accurate 12-bit DAC/ADC reference scaling. |
| Temperature Coefficient | ≤50ppm/°C max over -40°C to +125°C; limits drift to ±0.5% full-range error in automotive under-hood environments. |
| Shunt Current Range | 73µA to 15mA; supports low-power sensor biasing and high-current precision regulation without external components. |
| Wideband Noise | 64µVRMS (10Hz–10kHz); enables high-resolution data acquisition without added filtering overhead. |
| Dynamic Impedance | ≤1.0Ω at 1mA; maintains <1mV output shift under 1mA load transients, critical for fast-settling measurement circuits. |
| Long-Term Stability | 120ppm after 1000 hours; ensures calibration integrity in medical and test equipment with multi-year service life. |
Pinout & Package
LM4050BEM3-4.1/V+T uses the 3-pin SC70 surface-mount package (1.8mm × 1.8mm), 50% smaller than SOT23, with exposed pad not connected. Pin 3 is NC (no connection) and must be left unconnected or tied to pin 2 per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Positive terminal (anode) | Reference output node; connects to load and feedback network in shunt configuration. |
| 2 (-) | Negative terminal (cathode) | Ground reference point; forms return path for shunt current and defines voltage reference potential. |
| 3 (N.C.) | No connection | Must remain floating or shorted to pin 2; no internal circuitry - prevents misrouting in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Validated for automotive Grade 1 (-40°C to +125°C), supporting engine control units and ADAS sensor interfaces. |
| No output capacitor required | Stable with any capacitive load up to 10µF, eliminating BOM cost and board space for external stabilization. |
| Ultra-small SC70-3 package | 1.8mm × 1.8mm footprint enables dense placement in portable medical devices and wearables. |
| Low 64µVRMS noise | Reduces quantization uncertainty in 16-bit+ SAR ADCs without post-processing filtering. |
| 60µA–15mA operating range | Supports both micropower battery monitoring and high-current precision power supply trimming. |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Glucometer |
|---|---|
Use Scenario: Provides stable 4.096V reference for analog front-end of oxygen sensor signal conditioning in exhaust gas recirculation systems. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise bias point for op-amp gain stages and ADC input scaling. Use Value: AEC-Q100 qualification and ±0.7% total tolerance ensure consistent sensor calibration across thermal cycling, reducing field failure rates. | Use Scenario: Supplies reference voltage to 12-bit ADC measuring blood glucose concentration via electrochemical strip interface. IC Role / Device Role / Timing Role: Micropower shunt reference enabling single-CR2032 battery operation for >2 years with <100nA quiescent drain. Use Value: 64µVRMS noise and 73µA minimum current allow direct ADC interfacing without additional LDO or filter stages. |
| Industrial PLC Analog Input Module | Test & Measurement Multimeter Front-End |
Use Scenario: References 24-bit delta-sigma ADC in 4–20mA loop-powered I/O card operating in factory-floor environments. IC Role / Device Role / Timing Role: Precision shunt reference compensating for supply rail variation and ambient temperature drift. Use Value: 50ppm/°C tempco and 120ppm long-term stability maintain <0.01% measurement accuracy over 5-year calibration cycle. | Use Scenario: Sets full-scale reference for autoranging multimeter measuring DC voltages from 100mV to 1000V with 0.005% basic accuracy. IC Role / Device Role / Timing Role: Primary voltage standard in metrology-grade reference chain, isolated by precision resistors. Use Value: Laser-trimmed 0.2% initial accuracy and no-output-capacitor stability eliminate settling delays during range switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040BIM3-4.1+T | Same 4.096V output and 0.2% accuracy, but 100ppm/°C tempco (vs. 50ppm/°C) and no AEC-Q100 qualification. | Suitable for commercial-grade instrumentation where automotive reliability is not required. | Select when cost sensitivity outweighs temperature stability and automotive qualification needs. |
| REF3040AIDBZR | 4.096V, 0.2% accuracy, 50ppm/°C, but series-mode topology requiring ≥1µF output capacitor and higher 50µA quiescent current. | Preferred in designs already using series references with existing capacitor footprints. | Choose only if board layout accommodates mandatory output capacitor and higher supply current is acceptable. |
Compared with LM4040BIM3-4.1+T, LM4050BEM3-4.1/V+T delivers tighter thermal drift and automotive qualification; versus REF3040AIDBZR, it eliminates output capacitance requirements and reduces minimum operating current by 23µA - directly enabling smaller batteries and faster power-up in portable test gear.
Availability
LM4050BEM3-4.1/V+T is available at Aetrix Electronics and suitable for automotive ECU design, portable medical instrumentation, industrial PLC analog input modules, and test & measurement front-ends requiring stable component supply with AEC-Q100 assurance.
Supply support for LM4050BEM3-4.1/V+T 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LM4050 series belongs to Analog Devices' precision voltage reference product line, engineered specifically for space-constrained, high-reliability applications demanding AEC-Q100 qualification, ultra-low noise, and zero-output-capacitor stability.
FAQ
What is the exact output voltage tolerance of LM4050BEM3-4.1/V+T at +25°C?
The LM4050BEM3-4.1/V+T has a nominal output voltage of 4.096V with ±8.2mV (±0.2%) initial tolerance at +25°C, corresponding to 4.0878V minimum and 4.1042V maximum per Electrical Characteristics table on page 6 of the datasheet.
Does LM4050BEM3-4.1/V+T require an external output capacitor for stability?
No, LM4050BEM3-4.1/V+T does not require an external output capacitor. Its internal architecture ensures stability with any capacitive load, including 0µF - a key advantage over series-mode references that mandate minimum output capacitance.
Is LM4050BEM3-4.1/V+T qualified for automotive applications?
Yes, LM4050BEM3-4.1/V+T is AEC-Q100 qualified (Grade 1, -40°C to +125°C), as explicitly stated in the Features section and Ordering Information table on page 12 of the datasheet, making it suitable for engine control, ADAS, and body electronics.
What is the minimum shunt current required for LM4050BEM3-4.1/V+T to regulate properly?
The LM4050BEM3-4.1/V+T requires a minimum shunt current of 73µA to maintain regulation across its full temperature range, as specified in the Electrical Characteristics table for 4.096V grade on page 6 of the datasheet.
How does the noise performance of LM4050BEM3-4.1/V+T compare to other 4.096V references?
LM4050BEM3-4.1/V+T delivers 64µVRMS wideband noise (10Hz–10kHz), lower than LM4040BIM3-4.1+T (75µVRMS) and competitive with REF3040AIDBZR (60µVRMS), enabling high-fidelity signal chains in 16-bit+ data acquisition systems without added filtering.
LM4050BEM3-4.1/V+T 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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 64µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 73 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BEM3-4.1/V+T FAQ
1.How can I place an order for LM4050BEM3-4.1/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BEM3-4.1/V+T 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 LM4050BEM3-4.1/V+T reliable?
The price and inventory of LM4050BEM3-4.1/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BEM3-4.1/V+T is usually 5 days.
3.What payment methods are accepted for LM4050BEM3-4.1/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BEM3-4.1/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BEM3-4.1/V+T?
LM4050BEM3-4.1/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BEM3-4.1/V+T 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 LM4050BEM3-4.1/V+T?
For technical support, including LM4050BEM3-4.1/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BEM3-4.1/V+T requirements.
6.How does Aetrix verify that LM4050BEM3-4.1/V+T is sourced from the original manufacturer or authorized distributors?
All LM4050BEM3-4.1/V+T 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 LM4050BEM3-4.1/V+T meets industry standards.
7.What is the process for return or replacement of LM4050BEM3-4.1/V+T?
All LM4050BEM3-4.1/V+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BEM3-4.1/V+T, 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 LM4050BEM3-4.1/V+T part is unused and in its original packaging.
Return procedure for LM4050BEM3-4.1/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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