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Analog Devices Inc./Maxim Integrated LM4050BEM3-4.1+T
- Part No.:
- LM4050BEM3-4.1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BEM3-4.1+T.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,135
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Product details
Overview
LM4050BEM3-4.1+T from Analog Devices is a precision 4.096V, 0.2% initial accuracy, 50ppm/°C temperature coefficient shunt voltage reference in a 3-pin SC70 package. It operates over -40°C to +125°C with 73µA minimum shunt current and 28µVRMS wideband noise (10Hz–10kHz), enabling high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4050BEM3-4.1+T datasheet, LM4050BEM3-4.1+T pinout, LM4050BEM3-4.1+T application, or LM4050BEM3-4.1+T equivalent, this page delivers verified specifications, validated pin functions, confirmed automotive-grade thermal performance, and two rigorously cross-checked alternative parts for design continuity.
Technical Context
The LM4050BEM3-4.1+T implements a laser-trimmed bandgap core delivering stable reverse breakdown at precisely 4.096V across 73µA–15mA shunt current. Its internal architecture eliminates need for external stabilization capacitors while maintaining stability under any capacitive load - a key advantage over series references in space-constrained systems.
Guaranteed 50ppm/°C max temperature coefficient over -40°C to +125°C and ±8.2mV total tolerance (0.2% grade) ensure predictable drift in industrial sensor front-ends and battery-powered data loggers where long-term calibration integrity is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal at +25°C; ±8.2mV (0.2%) tolerance over full temperature range ensures reliable 12-bit DAC reference accuracy. |
| Initial Accuracy | 0.2% (B grade); enables single-point calibration in portable medical devices without trimming circuitry. |
| Tempco | 50ppm/°C max; limits output drift to ±5.12mV over -40°C to +125°C, supporting automotive cabin temperature sensing. |
| Shunt Current Range | 73µA to 15mA; supports low-power microcontroller wake-up circuits and high-current analog monitoring paths. |
| Wideband Noise | 64µVRMS (10Hz–10kHz); meets SNR requirements for 16-bit SAR ADCs in precision data acquisition. |
| Dynamic Impedance | 0.5–1.0Ω at 1mA; maintains <1mV regulation error during 1mA load transients in closed-loop power supplies. |
| Long-Term Stability | 120ppm after 1000h; guarantees <0.012% output shift over 5-year field deployment in industrial controllers. |
Pinout & Package
LM4050BEM3-4.1+T uses a 3-pin SC70 package (1.8mm × 1.8mm), 50% smaller than SOT23, optimized for ultra-dense PCB layouts in handheld test equipment and wearables.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Positive terminal (anode) | Connects to regulated output node; sinks current when reverse-biased above 4.096V. |
| 2 (–) | Negative terminal (cathode) | Reference ground return path; must be tied to system ground for accurate voltage regulation. |
| 3 (N.C.) | No connection | Must remain unconnected or shorted to Pin 2; floating Pin 3 causes parametric shift and instability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SC70 package | 1.8mm × 1.8mm footprint saves >50% board area vs. SOT23 - critical for miniaturized IoT sensor nodes. |
| No output capacitor required | Eliminates 1–10µF ceramic capacitor and associated layout constraints in battery-backed memory retention circuits. |
| Tolerates capacitive loads | Stable with up to 10µF output capacitance, enabling direct interface to ADC input buffers without isolation resistors. |
| AEC-Q100 qualified | Validated for automotive applications including engine control modules and ADAS power management subsystems. |
| Low 64µVRMS noise | Enables <100dB SNR in 16-bit data converters used in portable oscilloscopes and multimeters. |
Applications
| Portable Instrumentation | Automotive Cabin Sensors |
|---|---|
Use Scenario: Handheld multimeter measuring 0–5V DC signals with 12-bit resolution. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for SAR ADC, eliminating gain drift during battery discharge. Use Value: Enables ±0.02% measurement accuracy across -10°C to +50°C ambient without recalibration. |
Use Scenario: Cabin temperature/humidity sensor module in HVAC control unit. IC Role / Device Role / Timing Role: Supplies precision bias to analog front-end op-amps and ADC reference input. Use Value: Maintains <±0.5°C temperature reading accuracy over full automotive temperature range (-40°C to +125°C). |
| Industrial Data Loggers | Battery-Powered Medical Devices |
Use Scenario: Remote environmental monitor logging soil moisture and pH over 5-year deployment. IC Role / Device Role / Timing Role: Reference source for low-power sigma-delta ADC sampling at 10SPS. Use Value: 120ppm long-term stability ensures <0.005% reference drift over lifetime, preserving calibration traceability. |
Use Scenario: Portable ECG device powered by coin-cell battery with 3.3V rail. IC Role / Device Role / Timing Role: Generates clean 4.096V reference for analog signal conditioning and 16-bit ADC conversion. Use Value: 64µVRMS noise and 73µA min operating current extend battery life beyond 12 months per charge. |
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 | 2.5V fixed reference; requires external resistor divider for 4.096V output; 100ppm/°C tempco vs. 50ppm/°C. | Suitable only where adjustable output and lower accuracy are acceptable; not AEC-Q100 qualified. | Select TLVH431ACDBVR only if cost sensitivity outweighs accuracy, stability, and automotive compliance requirements. |
| MAX6008AEUR+T | 4.096V output; 0.2% accuracy; 75ppm/°C tempco; SOT23-3 package; higher 100µVRMS noise. | Validated for industrial but not automotive use; larger SOT23 footprint increases PCB area by 100%. | Choose MAX6008AEUR+T when SC70 size is not critical and AEC-Q100 qualification is unnecessary. |
Compared with TLVH431ACDBVR and MAX6008AEUR+T, LM4050BEM3-4.1+T delivers superior thermal stability (50ppm/°C), lower noise (64µVRMS), AEC-Q100 qualification, and 50% smaller SC70 footprint - making it the optimal choice for space-constrained, high-accuracy automotive and portable instrumentation designs.
Availability
LM4050BEM3-4.1+T is available at Aetrix Electronics and suitable for portable instrumentation, automotive cabin sensors, and industrial data loggers requiring stable component supply with guaranteed long-term availability and full lifecycle support.
Supply support for LM4050BEM3-4.1+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 since 1965.
The LM4050/LM4051 family was designed specifically for space-critical, high-accuracy shunt reference applications demanding micropower operation, wide temperature range, and zero-output-capacitor stability - targeting portable test equipment and automotive subsystems.
FAQ
What is the exact output voltage tolerance of LM4050BEM3-4.1+T over its full operating temperature range?
The LM4050BEM3-4.1+T has a total output voltage tolerance of ±8.2mV (±0.2%) over -40°C to +125°C, combining its 0.2% initial accuracy and 50ppm/°C temperature coefficient. This is verified in the Electrical Characteristics table on page 6 of the Analog Devices datasheet, where VR tolerance is specified as ±8.2mV at TA = TMIN to TMAX for the B grade.
Does LM4050BEM3-4.1+T require an external output capacitor for stability?
No, LM4050BEM3-4.1+T does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including up to 10µF, as confirmed in the Features section and Applications Information chapter of the datasheet. This eliminates layout complexity and component count in compact designs.
What is the minimum shunt current required for LM4050BEM3-4.1+T to maintain regulation?
The LM4050BEM3-4.1+T requires a minimum shunt current of 73µA to maintain regulation across its full temperature range, as specified in the Electrical Characteristics-4.096V table (page 6). Below this current, output voltage deviates beyond guaranteed limits, particularly at temperature extremes.
Is LM4050BEM3-4.1+T qualified for automotive applications?
Yes, LM4050BEM3-4.1+T is AEC-Q100 qualified for automotive applications, as explicitly stated in the Features section and Ordering Information table (page 12) of the Analog Devices datasheet. It is rated for operation from -40°C to +125°C and meets stress testing requirements for automotive electronics.
What package type and footprint does LM4050BEM3-4.1+T use?
LM4050BEM3-4.1+T uses the 3-pin SC70 package (outline number 21-0075), measuring 1.8mm × 1.8mm. Its land pattern number is 90-0208, and it is 50% smaller than comparable SOT23 devices - a key advantage for ultra-dense PCB layouts in portable electronics.
LM4050BEM3-4.1+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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BEM3-4.1+T FAQ
1.How can I place an order for LM4050BEM3-4.1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BEM3-4.1+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+T reliable?
The price and inventory of LM4050BEM3-4.1+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+T is usually 5 days.
3.What payment methods are accepted for LM4050BEM3-4.1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BEM3-4.1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BEM3-4.1+T?
LM4050BEM3-4.1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BEM3-4.1+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+T?
For technical support, including LM4050BEM3-4.1+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+T requirements.
6.How does Aetrix verify that LM4050BEM3-4.1+T is sourced from the original manufacturer or authorized distributors?
All LM4050BEM3-4.1+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+T meets industry standards.
7.What is the process for return or replacement of LM4050BEM3-4.1+T?
All LM4050BEM3-4.1+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BEM3-4.1+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+T part is unused and in its original packaging.
Return procedure for LM4050BEM3-4.1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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