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Analog Devices Inc./Maxim Integrated LM4050AEM3-4.1/V+T
- Part No.:
- LM4050AEM3-4.1/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050AEM3-4.1/V+T.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,071
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Product details
Overview
LM4050AEM3-4.1/V+T from Analog Devices is a precision 4.096V, 0.1% initial accuracy, 50ppm/°C max temperature coefficient shunt voltage reference in 3-pin SOT23 package. It operates over -40°C to +125°C with 73µA minimum shunt current and 15mA max shunt current, delivering stable reverse breakdown voltage for high-accuracy ADC/DAC biasing and portable power monitoring.
For engineers reviewing the LM4050AEM3-4.1/V+T datasheet, LM4050AEM3-4.1/V+T pinout, LM4050AEM3-4.1/V+T application, or LM4050AEM3-4.1/V+T equivalent, this page provides verified specifications, AEC-Q100 qualified automotive-grade performance, SC70/SOT23 package compatibility, and real-world design values for low-power, space-constrained systems requiring ±0.6% total tolerance over full temperature range.
Technical Context
The LM4050AEM3-4.1/V+T implements a laser-trimmed bandgap shunt architecture that maintains 4.096V reverse breakdown voltage across 73µA–15mA shunt current. Its BiCMOS process enables low 64µVRMS wideband noise (10Hz–10kHz) and 1.0Ω typical dynamic impedance at 1mA, ensuring minimal output variation under load transients.
Guaranteed over -40°C to +125°C, it achieves ±0.1% initial accuracy and ±0.6% total voltage tolerance including temperature drift (±50ppm/°C × 100°C), with no external capacitor required for stability-even with capacitive loads up to 1µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal; tight 4.0919V–4.1001V range at +25°C ensures precise 12-bit DAC/ADC reference without calibration. |
| Initial Accuracy | ±0.1% (±4.1mV); enables single-point calibration elimination in battery fuel gauges and sensor signal chains. |
| Tempco | 50ppm/°C max; contributes ≤±0.5% drift over -40°C to +125°C, critical for automotive under-hood applications. |
| Shunt Current Range | 73µA min to 15mA max; supports ultra-low-power IoT sensors and high-current industrial analog front-ends. |
| Wideband Noise | 64µVRMS (10Hz–10kHz); low enough to avoid degrading 16-bit SAR ADC effective resolution. |
| Dynamic Impedance | 1.0Ω max at 1mA; minimizes output voltage shift during fast load steps in precision data acquisition. |
| Long-Term Stability | 120ppm after 1000h; ensures <0.012% drift over 5-year product lifetime in medical instrumentation. |
Pinout & Package
3-pin SOT23 package (1.7mm × 2.9mm × 1.3mm), RoHS-compliant, thermal resistance θJA = 336°C/W on four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Positive terminal (anode) | Connects to regulated output node; sinks shunt current when reverse-biased above 4.096V. |
| 2 (–) | Negative terminal (cathode) | Reference ground connection; forms voltage clamp with Pin 1; must be tied to system ground. |
| 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 |
|---|---|
| AEC-Q100 qualified | Validated for automotive applications including engine control units and ADAS power domains. |
| No output capacitor required | Stable with any capacitive load (0–1µF), eliminating BOM cost and PCB area for decoupling. |
| Ultra-low quiescent current | 73µA minimum operating current enables operation from coin-cell batteries for >10 years. |
| Tolerates capacitive loads | Maintains regulation stability even with 1µF ceramic output capacitance-critical for noisy automotive rails. |
| Laser-trimmed accuracy | 0.1% initial tolerance achieved via on-die resistor trimming, reducing post-assembly calibration effort. |
Applications
| Portable Medical Sensors | Automotive Engine Control Units |
|---|---|
Use Scenario: Continuous glucose monitor using 16-bit ADC to digitize electrochemical sensor output. IC Role / Device Role / Timing Role: Provides 4.096V reference for ADC full-scale range, enabling 62.5µV LSB resolution. Use Value: 0.1% initial accuracy and 50ppm/°C tempco ensure <±1 LSB error across body temperature range (32–42°C). |
Use Scenario: Fuel injector driver circuit requiring stable 5V rail monitoring in under-hood ECU. IC Role / Device Role / Timing Role: Shunt reference for microcontroller ADC measuring 12V battery voltage via resistor divider. Use Value: AEC-Q100 qualification and -40°C to +125°C operation guarantee reliability in extreme thermal cycling environments. |
| Industrial Data Acquisition Modules | Smart Energy Meters |
Use Scenario: 24-bit sigma-delta ADC capturing vibration signals from factory floor machinery. IC Role / Device Role / Timing Role: Precision 4.096V reference for ADC reference input, defining measurement full scale. Use Value: 64µVRMS noise and 1.0Ω dynamic impedance prevent noise-induced quantization errors and load-induced gain drift. |
Use Scenario: Revenue-grade electricity meter measuring line voltage and current with metrology-grade accuracy. IC Role / Device Role / Timing Role: Stable shunt reference for isolated voltage sensing channel, referenced to system ground. Use Value: 120ppm long-term stability ensures <0.012% reference drift over 10-year meter certification period. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4050AEX3-4.1+T | Same 4.096V/0.1%/50ppm/°C specs but in smaller SC70 package (1.8mm × 1.8mm vs SOT23's 1.7mm × 2.9mm). | Better suited for ultra-dense PCB layouts where footprint area is constrained more than height. | Select when board space is premium and thermal dissipation allows SC70's higher θJA (340°C/W). |
| REF3040AIDBZR | 4.096V, 0.2% initial accuracy, 50ppm/°C, but higher 100µA min shunt current and 100µVRMS noise. | Less suitable for sub-100µA battery-powered designs; requires larger stabilization margin. | Choose only if existing design uses TI's REF30xx family and layout reuse outweighs 0.1% accuracy loss. |
Compared with LM4050AEM3-4.1/V+T, the LM4050AEX3-4.1+T offers identical electrical performance in a 30% smaller footprint but with reduced thermal capability, while REF3040AIDBZR trades 0.1% accuracy and lower noise for broader vendor support and different thermal derating behavior.
Availability
LM4050AEM3-4.1/V+T is available at Aetrix Electronics and suitable for automotive engine control units, portable medical sensors, industrial data acquisition modules, and smart energy meters requiring stable component supply with AEC-Q100 compliance and extended temperature operation.
Supply support for LM4050AEM3-4.1/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 since 1965.
The LM4050/LM4051 series was designed specifically for space-constrained, high-accuracy voltage reference needs in battery-powered and automotive systems-emphasizing micropower operation, AEC-Q100 qualification, and zero-capacitor stability.
FAQ
What is the guaranteed operating temperature range for LM4050AEM3-4.1/V+T?
The LM4050AEM3-4.1/V+T is specified and guaranteed over -40°C to +125°C ambient temperature. This range is validated per AEC-Q100 stress testing and applies to all electrical parameters including 4.096V output voltage, 0.1% initial accuracy, and 50ppm/°C temperature coefficient. Operation outside this range may cause parametric shift or permanent damage.
Does LM4050AEM3-4.1/V+T require an external output capacitor?
No, the LM4050AEM3-4.1/V+T does not require an external output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load from 0 to 1µF, eliminating the need for additional BOM components and PCB area-critical for compact portable and automotive applications.
What is the minimum shunt current needed for LM4050AEM3-4.1/V+T to maintain regulation?
The LM4050AEM3-4.1/V+T requires a minimum shunt current of 73µA to maintain regulation at 4.096V across its full temperature range. Below this current, output voltage deviates from specification; design circuits must ensure this threshold is met under worst-case conditions (e.g., lowest supply voltage and highest load current).
How does the /V suffix in LM4050AEM3-4.1/V+T affect its qualification status?
The /V suffix in LM4050AEM3-4.1/V+T denotes AEC-Q100 qualification for automotive applications. This version undergoes additional stress testing-including temperature cycling, humidity bias HAST, and ESD-beyond standard industrial grade, making it suitable for under-hood and safety-critical ECUs where reliability is mandated.
Can LM4050AEM3-4.1/V+T be used in forward conduction mode?
Yes, the LM4050AEM3-4.1/V+T can conduct forward current up to 10mA, clamping to approximately one diode drop (~0.7V) below ground when Pin 1 is biased negative relative to Pin 2. However, this mode is not intended for precision reference use and is typically reserved for protection or level-shifting functions-not voltage regulation.
LM4050AEM3-4.1/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:
- ±0.1%
- 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
LM4050AEM3-4.1/V+T FAQ
1.How can I place an order for LM4050AEM3-4.1/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AEM3-4.1/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 LM4050AEM3-4.1/V+T reliable?
The price and inventory of LM4050AEM3-4.1/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 LM4050AEM3-4.1/V+T is usually 5 days.
3.What payment methods are accepted for LM4050AEM3-4.1/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AEM3-4.1/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AEM3-4.1/V+T?
LM4050AEM3-4.1/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AEM3-4.1/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 LM4050AEM3-4.1/V+T?
For technical support, including LM4050AEM3-4.1/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AEM3-4.1/V+T requirements.
6.How does Aetrix verify that LM4050AEM3-4.1/V+T is sourced from the original manufacturer or authorized distributors?
All LM4050AEM3-4.1/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 LM4050AEM3-4.1/V+T meets industry standards.
7.What is the process for return or replacement of LM4050AEM3-4.1/V+T?
All LM4050AEM3-4.1/V+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AEM3-4.1/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 LM4050AEM3-4.1/V+T part is unused and in its original packaging.
Return procedure for LM4050AEM3-4.1/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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