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Texas Instruments LM4050QAEM3X5.0/NOPB
- Part No.:
- LM4050QAEM3X5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QAEM3X5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,729
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Product details
Overview
LM4050QAEM3X5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 5.0 V reverse breakdown voltage with ±0.1% initial tolerance (A grade), 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 60 μA to 15 mA over −40°C to 125°C and requires no output capacitor while tolerating capacitive loads - enabling use in high-accuracy ADC references and battery-powered instrumentation.
For engineers reviewing the LM4050QAEM3X5.0/NOPB datasheet, LM4050QAEM3X5.0/NOPB pinout, LM4050QAEM3X5.0/NOPB application, or LM4050QAEM3X5.0/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, extended temperature range support, low dynamic impedance (0.5 Ω), thermal hysteresis of 1.4 mV, and compatibility with space-constrained analog signal chains requiring stable 5 V reference rails.
Technical Context
The LM4050QAEM3X5.0/NOPB implements a curvature-corrected bandgap shunt architecture with Zener-zap trim at wafer sort, achieving ±0.1% accuracy at 25°C. Its internal compensation eliminates need for external stabilization capacitance while maintaining stability across all capacitive loads.
It functions as a two-terminal device: cathode regulates voltage relative to anode (ground), with current-sourced operation where regulation depends on cathode current (IR) between 60 μA and 15 mA. Thermal hysteresis (1.4 mV) and long-term drift (120 ppm over 1000 hrs) are characterized across −40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage at IR = 100 μA - sets precise reference rail for 12-bit ADCs with ~1.22 mV/LSB scaling. |
| Initial Tolerance | ±0.1% max at 25°C (A grade) - enables single-point calibration in high-accuracy measurement systems. |
| Temp Coefficient | ±50 ppm/°C max over −40°C to 125°C - ensures < ±0.625 mV drift across full industrial+ range. |
| Operating Current | 60 μA min to 15 mA max - supports ultra-low-power sensor nodes and robust high-current reference buffering. |
| Output Noise | 93 μVrms (10 Hz–10 kHz) - limits quantization error in 16-bit+ data acquisition without external filtering. |
| Dynamic Impedance | 0.5 Ω at 1 mA, 120 Hz - maintains voltage stability under fast load transients in closed-loop regulator designs. |
| Thermal Hysteresis | 1.4 mV after −40°C ↔ 125°C cycling - defines repeatability limit in systems undergoing repeated thermal stress. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, surface-mount, 3-pin configuration with exposed die attach pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / regulated voltage node | Connects to supply via series resistor (RS); voltage develops across cathode–anode; must sink 60 μA–15 mA for regulation. |
| Anode (Pin 2) | Reference ground / common return | Internally tied to substrate; must be connected to system ground; serves as voltage reference point for VOUT. |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 (anode); avoids parasitic Schottky conduction in EMI-sensitive layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.0 V output | Eliminates external feedback resistors - reduces BOM count and layout area in compact analog front-ends. |
| No output capacitor required | Internally compensated design ensures stability with any capacitive load - simplifies layout and improves startup reliability. |
| AEC-Q100 Grade 1 qualified | Validated for automotive applications operating from −40°C to 125°C - supports infotainment, ADAS sensor references. |
| Low 60 μA minimum current | Enables operation from coin cells or energy-harvesting sources - extends battery life in portable instrumentation. |
| Low 93 μVrms noise | Minimizes added uncertainty in precision 16-bit ADC conversions without post-filtering - improves effective resolution. |
Applications
| Battery-Powered Instrumentation | Precision Data Acquisition |
|---|---|
|
Use Scenario: Handheld multimeter or portable gas analyzer with 16-bit SAR ADC and microcontroller. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 5.0 V reference rail for ADC and analog signal conditioning. Use Value: ±0.1% initial tolerance and 50 ppm/°C TC ensure < ±3.125 mV total drift over −20°C to 70°C operating range - meets Class II metering accuracy. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision reference for 24-bit delta-sigma ADC driving isolated SPI interface. Use Value: 93 μVrms noise and 0.5 Ω dynamic impedance maintain ENOB > 21 bits at 10 sps - exceeds IEC 61000-4-30 Class A requirements. |
| Automotive Sensor Conditioning | Energy Metering Reference |
|
Use Scenario: Engine coolant temperature and pressure sensor signal chain in powertrain control unit. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 shunt reference powering op-amp gain stages and ADC reference. Use Value: Validated operation from −40°C to 125°C and 1.4 mV thermal hysteresis ensure repeatable offset calibration across thermal cycles - critical for ASIL-B functional safety compliance. |
Use Scenario: Revenue-grade electricity meter with metrology SoC and anti-tampering monitoring. IC Role / Device Role / Timing Role: Primary 5.0 V reference for polyphase energy measurement IC and tamper-detection comparators. Use Value: 120 ppm long-term stability (1000 hrs) and ±0.1% initial tolerance meet ANSI C12.20 Class 0.2 accuracy requirements without periodic recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050IDR | Series reference (not shunt); 5.0 V, ±0.05% initial tolerance; 3 μVrms noise; requires 1.2 mA quiescent current. | Requires higher supply headroom (>6.5 V) and external decoupling; unsuitable for low-voltage or two-terminal topologies. | Choose REF5050IDR only when ultra-low noise (<5 μVrms) and tighter initial tolerance justify added complexity and power. |
| ADR4550BRZ | Series reference; 5.0 V, ±0.02% initial tolerance; 1.2 μVrms noise; 950 μA quiescent current; SOIC-8 package. | Larger footprint and higher minimum current preclude use in space- or power-constrained shunt configurations. | Select ADR4550BRZ for lab-grade instrumentation where noise floor and long-term drift dominate over size and current budget. |
Compared with REF5050IDR and ADR4550BRZ, the LM4050QAEM3X5.0/NOPB offers unique two-terminal simplicity, micropower operation (60 μA), and SOT-23 footprint - making it the only viable choice for battery-powered, space-limited shunt reference applications requiring AEC-Q100 qualification and 5.0 V output.
Availability
LM4050QAEM3X5.0/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition, automotive sensor conditioning, and energy metering requiring stable component supply across extended temperature ranges and automotive-grade reliability.
Supply support for LM4050QAEM3X5.0/NOPB 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
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and automotive electronics.
The LM4050-N product line delivers micropower shunt voltage references optimized for space-constrained, high-accuracy applications including automotive sensors, portable test equipment, and industrial metering - emphasizing low drift, low noise, and AEC-Q100 compliance.
FAQ
What is the maximum operating current for LM4050QAEM3X5.0/NOPB?
The LM4050QAEM3X5.0/NOPB supports a maximum operating current of 15 mA. Exceeding this value risks exceeding the device's 280 mW power dissipation limit at 25°C ambient, potentially causing thermal shutdown or accelerated long-term drift. Derating is required above 25°C per RθJA = 287°C/W.
Does LM4050QAEM3X5.0/NOPB require an external output capacitor?
No, the LM4050QAEM3X5.0/NOPB is internally compensated and does not require an external output capacitor for stability. It remains stable with any capacitive load, including ceramic bypass caps up to 10 μF - simplifying layout and reducing component count in compact designs.
What is the thermal hysteresis specification for LM4050QAEM3X5.0/NOPB?
The LM4050QAEM3X5.0/NOPB exhibits 1.4 mV thermal hysteresis, measured as the voltage shift at 25°C after cycling between −40°C and 125°C. This parameter reflects mechanical stress-induced drift in the SOT-23 package and defines repeatability limits in systems subject to repeated thermal cycling.
Is LM4050QAEM3X5.0/NOPB qualified for automotive applications?
Yes, LM4050QAEM3X5.0/NOPB is AEC-Q100 Grade 1 qualified (−40°C to 125°C), manufactured on an automotive-grade flow, and specified for use in automotive electronics including engine control, ADAS sensors, and infotainment power rails - meeting stringent reliability and qualification requirements.
How does the minimum operating current vary with temperature for LM4050QAEM3X5.0/NOPB?
The LM4050QAEM3X5.0/NOPB has a typical minimum operating current of 74 μA at 25°C, increasing to 90 μA across the extended temperature range (−40°C to 125°C). This ensures stable regulation under worst-case thermal conditions while maintaining micropower operation in battery-backed systems.
LM4050QAEM3X5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- 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:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 90 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QAEM3X5.0/NOPB FAQ
1.How can I place an order for LM4050QAEM3X5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QAEM3X5.0/NOPB 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 LM4050QAEM3X5.0/NOPB reliable?
The price and inventory of LM4050QAEM3X5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QAEM3X5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QAEM3X5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QAEM3X5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QAEM3X5.0/NOPB?
LM4050QAEM3X5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QAEM3X5.0/NOPB 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 LM4050QAEM3X5.0/NOPB?
For technical support, including LM4050QAEM3X5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QAEM3X5.0/NOPB requirements.
6.How does Aetrix verify that LM4050QAEM3X5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QAEM3X5.0/NOPB 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 LM4050QAEM3X5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QAEM3X5.0/NOPB?
All LM4050QAEM3X5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QAEM3X5.0/NOPB, 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 LM4050QAEM3X5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050QAEM3X5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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