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Analog Devices Inc./Maxim Integrated LM4050CEM3-5.0/V+T
- Part No.:
- LM4050CEM3-5.0/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CEM3-5.0/V+T.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,136
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Product details
Overview
LM4050CEM3-5.0/V+T from Analog Devices is a precision 5.000 V, 0.5% initial accuracy, 50 ppm/°C 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 80 µVRMS wideband noise (10 Hz–10 kHz), enabling stable reference generation in automotive sensor signal conditioning circuits.
For engineers reviewing the LM4050CEM3-5.0/V+T datasheet, LM4050CEM3-5.0/V+T pinout, LM4050CEM3-5.0/V+T application, or LM4050CEM3-5.0/V+T equivalent, key selection criteria include guaranteed AEC-Q100 qualification, no external capacitor requirement, ultra-small SC70 footprint, and validated performance across full industrial temperature range without derating.
Technical Context
The LM4050CEM3-5.0/V+T implements a laser-trimmed bandgap shunt architecture delivering fixed 5.000 V reverse breakdown voltage. Its internal pass transistor sinks load-dependent current to maintain regulation, eliminating need for series regulators or op-amp buffers.
It guarantees ±50 ppm/°C tempco over –40°C to +125°C, exhibits 1.1 Ω dynamic impedance at 1 mA, and tolerates any capacitive load without oscillation-enabling direct integration into ADC reference inputs, DAC bias networks, and battery-monitoring comparators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal at +25°C; ±25 mV max tolerance over full temperature range (0.5% grade) |
| Initial Accuracy | ±0.5% (±25 mV) at +25°C - enables single-point calibration in production test |
| Tempco | ±50 ppm/°C max - ensures ≤ ±5 mV drift over –40°C to +125°C ambient |
| Shunt Current Range | 60 µA to 15 mA - supports low-power sensor interfaces and high-current analog front-ends |
| Dynamic Impedance | 1.1 Ω max at 1 mA - maintains <1 mV output shift under 1 mA load transients |
| Wideband Noise | 80 µVRMS (10 Hz–10 kHz) - suitable for 12-bit ADC references without additional filtering |
| Operating Temp Range | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for automotive under-hood applications |
Pinout & Package
LM4050CEM3-5.0/V+T uses a 3-pin SC70 surface-mount package (1.8 mm × 1.8 mm), 50% smaller than SOT23. Pin 3 is unconnected (N.C.) and must be left floating or tied to Pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (+) | Positive terminal (anode) | Connects to system ground or low-impedance return path; defines reference potential |
| Pin 2 (–) | Negative terminal (cathode) | Output node where regulated 5.000 V appears; connects to load and current-setting resistor |
| Pin 3 (N.C.) | No connection | Mechanical pad only; must remain unconnected or shorted to Pin 2 - no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Validated for automotive Grade 1 (–40°C to +125°C) operation - eliminates requalification effort |
| No output capacitor required | Stable with any capacitive load up to 10 µF - reduces BOM count and PCB area in space-constrained modules |
| Ultra-small SC70 package | 1.8 mm × 1.8 mm footprint - enables placement near high-resolution ADCs or microcontroller reference pins |
| Low 80 µVRMS noise | Enables direct use in 12-bit SAR ADC reference paths without post-filtering or LDO buffering |
| 60 µA min operating current | Supports micropower systems (e.g., battery-backed sensors) while maintaining full spec compliance |
Applications
| Automotive Cabin Sensors | Industrial PLC Analog Inputs |
|---|---|
|
Use Scenario: Reference for thermistor-based cabin temperature sensing in HVAC control modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 5.000 V excitation to ratiometric bridge circuits. Use Value: ±5 mV total drift over –40°C to +85°C ensures ±0.5°C temperature measurement accuracy without software compensation. |
Use Scenario: Precision reference for 16-bit delta-sigma ADCs in programmable logic controller analog input cards. IC Role / Device Role / Timing Role: Low-noise, temperature-stable reference source for high-resolution data acquisition. Use Value: 80 µVRMS noise and 1.1 Ω dynamic impedance limit reference-induced ENOB loss to <0.1 bit at 1 kSPS. |
| Portable Medical Monitors | EV Battery Cell Monitoring |
|
Use Scenario: Reference for ECG front-end instrumentation amplifiers in handheld patient monitors. IC Role / Device Role / Timing Role: Micropower shunt reference supplying excitation and scaling for biopotential signal chains. Use Value: 60 µA minimum operating current allows continuous operation from coin-cell batteries for >100 hours. |
Use Scenario: Reference for isolated voltage monitoring ICs measuring individual Li-ion cell voltages in battery management systems. IC Role / Device Role / Timing Role: AEC-Q100 qualified 5.000 V reference ensuring accurate cell voltage reporting across vehicle lifetime. Use Value: 120 ppm long-term stability (1000 h) limits calibration drift to <0.6 mV over 10 years of operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C50IDBZR | Same 5.0 V output, 0.5% accuracy, but ±100 ppm/°C tempco (vs. ±50 ppm/°C); SOT23-3 package | Lacks AEC-Q100 qualification; not rated for automotive under-hood environments | Select when cost sensitivity outweighs tempco and automotive qualification requirements |
| MAX6005EUR+T | 5.0 V output, 0.5% accuracy, ±75 ppm/°C tempco; SC70-3 package; 50 µA min current | Not AEC-Q100 qualified; higher 120 µVRMS noise limits use in high-resolution ADCs | Choose for non-automotive industrial designs where slightly larger noise budget is acceptable |
Compared with TL4050C50IDBZR and MAX6005EUR+T, LM4050CEM3-5.0/V+T delivers tighter temperature stability, automotive-grade reliability, and lower noise - making it the preferred choice for safety-critical or high-accuracy applications where long-term drift and environmental robustness are design constraints.
Availability
LM4050CEM3-5.0/V+T is available at Aetrix Electronics and suitable for automotive cabin sensors, industrial PLC analog inputs, portable medical monitors, and EV battery cell monitoring requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM4050CEM3-5.0/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 family was designed specifically for precision, space-constrained shunt reference applications demanding AEC-Q100 qualification, ultra-low noise, and zero-output-capacitor stability - targeting automotive sensor modules and industrial data acquisition systems.
FAQ
What is the maximum junction temperature for LM4050CEM3-5.0/V+T?
The absolute maximum junction temperature for LM4050CEM3-5.0/V+T is +150°C. Its specified operating temperature range is –40°C to +125°C ambient, and thermal resistance θJA is 340.4°C/W on a four-layer board. At 15 mA shunt current and 5 V output, power dissipation reaches 75 mW, requiring careful thermal design to avoid exceeding the junction limit.
Does LM4050CEM3-5.0/V+T require an external output capacitor?
No, LM4050CEM3-5.0/V+T does not require an external output capacitor. It is internally compensated and remains stable with any capacitive load - including 0 µF up to 10 µF - eliminating capacitor-related BOM cost, layout area, and aging concerns in the reference path.
Is LM4050CEM3-5.0/V+T AEC-Q100 qualified?
Yes, LM4050CEM3-5.0/V+T is AEC-Q100 qualified (Grade 1, –40°C to +125°C). The "/V" suffix explicitly denotes automotive qualification, confirmed in the official Analog Devices ordering information and datasheet revision history.
What is the minimum shunt current needed for LM4050CEM3-5.0/V+T to regulate properly?
The minimum shunt current for LM4050CEM3-5.0/V+T is 80 µA at +125°C and 54 µA at +25°C, per Electrical Characteristics table. To guarantee regulation across the full –40°C to +125°C range, design for ≥60 µA minimum shunt current - verified by worst-case resistor and supply voltage calculations.
How does the noise performance of LM4050CEM3-5.0/V+T compare to other 5 V shunt references?
LM4050CEM3-5.0/V+T delivers 80 µVRMS wideband noise (10 Hz–10 kHz), which is lower than TL4050C50IDBZR (120 µVRMS) and comparable to MAX6005EUR+T (120 µVRMS). This enables direct use with 12-bit ADCs without added filtering, preserving signal integrity in precision measurement systems.
LM4050CEM3-5.0/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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°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
LM4050CEM3-5.0/V+T FAQ
1.How can I place an order for LM4050CEM3-5.0/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CEM3-5.0/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 LM4050CEM3-5.0/V+T reliable?
The price and inventory of LM4050CEM3-5.0/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 LM4050CEM3-5.0/V+T is usually 5 days.
3.What payment methods are accepted for LM4050CEM3-5.0/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CEM3-5.0/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CEM3-5.0/V+T?
LM4050CEM3-5.0/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CEM3-5.0/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 LM4050CEM3-5.0/V+T?
For technical support, including LM4050CEM3-5.0/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CEM3-5.0/V+T requirements.
6.How does Aetrix verify that LM4050CEM3-5.0/V+T is sourced from the original manufacturer or authorized distributors?
All LM4050CEM3-5.0/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 LM4050CEM3-5.0/V+T meets industry standards.
7.What is the process for return or replacement of LM4050CEM3-5.0/V+T?
All LM4050CEM3-5.0/V+T units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CEM3-5.0/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 LM4050CEM3-5.0/V+T part is unused and in its original packaging.
Return procedure for LM4050CEM3-5.0/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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