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Analog Devices Inc./Maxim Integrated LM4050AEM3-2.5/V+
- Part No.:
- LM4050AEM3-2.5/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050AEM3-2.5/V+.pdf
- Description:
- 50PPM/C PRECISION MICROPOWER SHU
- Quantity:
- Payment:
- Shipping:
Inventory:3,553
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Product details
Overview
LM4050AEM3-2.5/V+ from Analog Devices is a precision 2.500 V, 0.1% initial accuracy, 50 ppm/°C max temperature coefficient shunt voltage reference in a 3-pin SC70 package. It operates over -40°C to +125°C with 60 µA to 15 mA shunt current capability and 35 µVRMS wideband noise (10 Hz–10 kHz), enabling stable reference generation in space-constrained battery-powered systems.
For engineers reviewing the LM4050AEM3-2.5/V+ datasheet, LM4050AEM3-2.5/V+ pinout, LM4050AEM3-2.5/V+ application, or LM4050AEM3-2.5/V+ equivalent, key selection criteria include guaranteed A-grade accuracy across automotive temperature range, no external capacitor requirement, ultra-small SC70 footprint, and AEC-Q100 qualification for automotive use.
Technical Context
The LM4050AEM3-2.5/V+ implements a laser-trimmed bandgap core with integrated pass transistor to maintain precise 2.500 V reverse breakdown voltage under varying load and supply conditions. Its two-terminal shunt architecture sinks current through an external series resistor to regulate output voltage without requiring a ground-referenced output node.
Designed for high-stability operation across industrial and automotive environments, it guarantees ±2.5 mV (±0.1%) initial tolerance at +25°C and maintains ≤50 ppm/°C tempco over -40°C to +125°C. Dynamic impedance remains ≤0.8 Ω at 1 mA, ensuring minimal voltage shift under transient load changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V nominal at +25°C; ±2.5 mV (±0.1%) initial tolerance ensures high-accuracy ADC/DAC biasing without calibration. |
| Temperature Coefficient | ≤50 ppm/°C max over -40°C to +125°C; enables <±0.25% total drift across full operating range for robust system-level accuracy. |
| Shunt Current Range | 60 µA to 15 mA; supports micropower sensor nodes and higher-current analog front-ends without external buffering. |
| Wideband Noise | 35 µVRMS (10 Hz–10 kHz); low enough for 16-bit SAR ADC reference without degrading ENOB. |
| Dynamic Impedance | ≤0.8 Ω at 1 mA; minimizes output voltage variation during load transients in precision measurement circuits. |
| Long-Term Stability | 120 ppm after 1000 hours; ensures reference integrity in mission-critical embedded systems with multi-year lifespans. |
Pinout & Package
LM4050AEM3-2.5/V+ uses a 3-pin SC70 surface-mount package (1.8 mm × 1.8 mm), 50% smaller than SOT23, optimized for space-constrained PCB layouts in portable and automotive electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+) | Positive terminal (anode) | Connects to regulated output node; sinks current when reverse-biased above 2.500 V. |
| 2 (–) | Negative terminal (cathode) | Reference ground node; forms voltage reference point between pins 1 and 2. |
| 3 (N.C.) | No connection | Must be left unconnected or tied to pin 2; no internal connection-omitting trace avoids parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive applications per Grade 1 (-40°C to +125°C) with validated reliability testing. |
| No output capacitor required | Internally compensated for stability with any capacitive load-eliminates BOM cost and layout area for decoupling cap. |
| Ultra-low micropower operation | 60 µA minimum shunt current enables operation from coin cells or energy-harvesting sources. |
| Laser-trimmed accuracy | 0.1% initial tolerance achieved via on-die resistor trimming-reduces need for system-level calibration. |
| Tolerates capacitive loads | Stable into >1 µF capacitance-supports direct connection to ADC input caps or noisy digital domains. |
Applications
| Portable Medical Sensors | Automotive Cabin Control Units |
|---|---|
|
Use Scenario: Battery-powered glucose meter with 16-bit ADC measuring electrochemical current. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.500 V reference for ADC conversion and sensor biasing. Use Value: 0.1% initial accuracy and 35 µVRMS noise ensure <±1 LSB error over full temperature range without recalibration. |
Use Scenario: HVAC control module in vehicle cabin requiring reliable sensor signal conditioning. IC Role / Device Role / Timing Role: Precision voltage reference for thermistor and pressure sensor front-end amplifiers. Use Value: AEC-Q100 qualification and 50 ppm/°C tempco guarantee consistent performance across -40°C to +125°C ambient. |
| Industrial Data Acquisition Modules | Smart Energy Meters |
|
Use Scenario: DIN-rail mounted PLC analog input card digitizing 4–20 mA loop signals. IC Role / Device Role / Timing Role: Reference source for isolated sigma-delta ADCs converting current-loop inputs. Use Value: 120 ppm long-term stability and 15 mA shunt capacity support 10+ year field deployment without drift-related recalibration. |
Use Scenario: Revenue-grade electricity meter using metrology-grade ADC for kWh calculation. IC Role / Device Role / Timing Role: Primary voltage reference for anti-tampering analog front-end and precision voltage scaling. Use Value: No external capacitor requirement simplifies certified design and reduces risk of EMI-induced reference corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040A25IDCKR | 2.5 V, 0.1% initial accuracy, SOT23-3 package, 100 ppm/°C max tempco, 60 µA–15 mA range | Higher tempco limits use in extended-temperature automotive or industrial environments | Select when cost sensitivity outweighs tempco requirements and SC70 size is not critical. |
| ADR3425ARJZ-R7 | 2.5 V, 0.1% initial accuracy, SOT23-5 package, 10 ppm/°C max tempco, 100 µA–10 mA range | Lower noise (12 µVRMS) but narrower current range and larger footprint; requires external capacitor for stability | Prefer for ultra-low-noise metrology where board space allows SOT23-5 and layout accommodates bypass cap. |
Compared with LM4040A25IDCKR, LM4050AEM3-2.5/V+ delivers tighter thermal stability for automotive-grade designs; compared with ADR3425ARJZ-R7, it eliminates capacitor dependency and reduces PCB area by 50%, trading minor noise margin for integration simplicity.
Availability
LM4050AEM3-2.5/V+ is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin control units, and industrial data acquisition modules requiring stable component supply with AEC-Q100 assurance and long-lifecycle support.
Supply support for LM4050AEM3-2.5/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
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-constrained, high-accuracy voltage reference needs in battery-powered and automotive systems-emphasizing micropower operation, AEC-Q100 compliance, and SC70 miniaturization.
FAQ
What is the guaranteed initial accuracy of LM4050AEM3-2.5/V+ at +25°C?
The LM4050AEM3-2.5/V+ guarantees ±2.5 mV (±0.1%) initial accuracy at +25°C, verified by 100% production testing. This tolerance is maintained across the full -40°C to +125°C operating range per A-grade specification, making LM4050AEM3-2.5/V+ suitable for high-precision applications where calibration overhead must be minimized.
Does LM4050AEM3-2.5/V+ require an external output capacitor for stability?
No, LM4050AEM3-2.5/V+ does not require an external output capacitor and remains stable with any capacitive load up to at least 1 µF. This eliminates BOM cost and PCB area typically needed for decoupling, and simplifies layout in noise-sensitive applications such as precision ADC reference paths.
What is the maximum operating temperature range for LM4050AEM3-2.5/V+?
LM4050AEM3-2.5/V+ is specified for continuous operation from -40°C to +125°C, meeting AEC-Q100 Grade 1 requirements. Its 50 ppm/°C max temperature coefficient and 120 ppm long-term stability are guaranteed across this full range, supporting deployment in under-hood automotive and industrial edge computing environments.
How does the SC70 package of LM4050AEM3-2.5/V+ compare in size to SOT23 alternatives?
The LM4050AEM3-2.5/V+ SC70 package measures 1.8 mm × 1.8 mm, approximately 50% smaller than standard SOT23 packages. This reduction enables denser PCB layouts in portable devices and automotive ECUs where board real estate is constrained, while maintaining identical 3-pin functional compatibility.
What shunt current range does LM4050AEM3-2.5/V+ support, and why does it matter?
LM4050AEM3-2.5/V+ supports a shunt current range of 60 µA to 15 mA. This wide range allows use in ultra-low-power sensor nodes (e.g., coin-cell IoT devices) and higher-current analog signal chains (e.g., programmable gain amplifier biasing), eliminating the need for multiple reference families across product lines.
LM4050AEM3-2.5/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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 28µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050AEM3-2.5/V+ FAQ
1.How can I place an order for LM4050AEM3-2.5/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AEM3-2.5/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 LM4050AEM3-2.5/V+ reliable?
The price and inventory of LM4050AEM3-2.5/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AEM3-2.5/V+ is usually 5 days.
3.What payment methods are accepted for LM4050AEM3-2.5/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AEM3-2.5/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AEM3-2.5/V+?
LM4050AEM3-2.5/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AEM3-2.5/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 LM4050AEM3-2.5/V+?
For technical support, including LM4050AEM3-2.5/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AEM3-2.5/V+ requirements.
6.How does Aetrix verify that LM4050AEM3-2.5/V+ is sourced from the original manufacturer or authorized distributors?
All LM4050AEM3-2.5/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 LM4050AEM3-2.5/V+ meets industry standards.
7.What is the process for return or replacement of LM4050AEM3-2.5/V+?
All LM4050AEM3-2.5/V+ units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AEM3-2.5/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 LM4050AEM3-2.5/V+ part is unused and in its original packaging.
Return procedure for LM4050AEM3-2.5/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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