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Texas Instruments LM4050QBIM3-2.0/NOPB
- Part No.:
- LM4050QBIM3-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBIM3-2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,786
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Product details
Overview
LM4050QBIM3-2.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering 2.048 V nominal output with ±0.1% (A-grade) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 41 μVrms wideband noise (10 Hz–10 kHz). It operates from 60 μA to 15 mA supply current across −40°C to 125°C and requires no external capacitor for stability-used in high-resolution ADC/DAC biasing and battery-powered instrumentation.
For engineers reviewing the LM4050QBIM3-2.0/NOPB datasheet, LM4050QBIM3-2.0/NOPB pinout, LM4050QBIM3-2.0/NOPB application, or LM4050QBIM3-2.0/NOPB equivalent, this page delivers verified electrical specs, thermal behavior, shunt regulator design guidance, automotive-grade qualification status, and real-world implementation constraints for precision analog systems.
Technical Context
The LM4050QBIM3-2.0/NOPB implements a curvature-corrected bandgap reference core trimmed via Zener-zap during wafer sort, achieving ±0.1% accuracy without external feedback. Its internal compensation enables stable operation with any capacitive load-including zero-output-capacitor configurations-while maintaining low dynamic impedance (0.3 Ω typical at 1 mA).
As an AEC-Q100 Grade 1 qualified device, it supports automotive applications with guaranteed operation from −40°C to 125°C ambient, 50 ppm/°C max tempco over full range, and thermal hysteresis of ≤0.7 mV after −40°C/125°C cycling. Minimum cathode current is 60 μA (typical) at 25°C, rising to 65 μA across temperature extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal reverse breakdown voltage - matches LSB scaling for 12-bit systems referenced to 2.048 V full-scale. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - enables single-point calibration elimination in high-accuracy data acquisition. |
| Tempco | ≤50 ppm/°C over −40°C to 125°C - ensures <±1.05 mV drift across full automotive temperature range. |
| Noise (10 Hz–10 kHz) | 41 μVrms typical - supports 16-bit+ effective resolution in low-frequency precision measurement paths. |
| Operating Current Range | 60 μA to 15 mA - allows ultra-low-power sensor nodes (e.g., 3.3 V supply with >50 kΩ series resistor) and robust industrial interfaces. |
| Dynamic Impedance | 0.3 Ω typical at 1 mA - minimizes load-induced voltage shift in varying-current applications like multiplexed ADC references. |
| Long-Term Stability | 120 ppm after 1000 hrs - predicts <±0.25 mV drift over 10-year field deployment at 25°C. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with exposed die attach pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage regulation node | Connects to unregulated supply via series resistor; voltage develops between Cathode and Anode; must sink 60–15,000 μA for regulation. |
| Anode (Pin 2) | Reference ground / common return | Internally tied to substrate; must be connected to system ground; serves as 0 V reference point for VOUT. |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 (Anode); connects to die attach interface but has no circuit function-floating avoids EMI coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-output-capacitor stability | Eliminates BOM cost and board space for bypass caps while maintaining phase margin >45° across all load capacitances. |
| AEC-Q100 Grade 1 qualification | Validated for automotive powertrain and chassis modules requiring operation from −40°C to 125°C ambient with lifetime reliability. |
| Low micropower operation | 60 μA minimum cathode current enables >10-year battery life in coin-cell–powered IoT sensors with 2.048 V reference rails. |
| Fixed 2.048 V output | Enables exact 1 mV/LSB scaling for 12-bit ADCs/DACs without trimming resistors-reducing calibration time and test cost. |
| Tolerant of capacitive loads | Stable with ≥10 nF ceramic or tantalum output capacitance-supports filtering in noisy industrial environments without oscillation. |
Applications
| Battery-Powered Instrumentation | Precision Data Acquisition |
|---|---|
Use Scenario: Portable multimeter or handheld gas analyzer using 3.3 V Li-ion supply and 16-bit SAR ADC. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.048 V full-scale reference for ADC conversion. Use Value: Enables 15.2-bit ENOB by limiting reference drift to <±0.5 mV over temperature and time-no recalibration needed between field deployments. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals with 24-bit ΣΔ ADC. IC Role / Device Role / Timing Role: Low-noise, low-drift reference source for ADC reference buffer stage. Use Value: 41 μVrms noise contributes <0.0025% of full-scale error; 50 ppm/°C tempco holds INL within ±2 LSB over −40°C to 85°C. |
| Automotive Sensor Conditioning | Energy Metering Reference |
Use Scenario: Engine coolant temperature sensor signal conditioning in AEC-Q100–compliant ECU. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric bridge excitation and ADC reference. Use Value: AEC-Q100 Grade 1 rating guarantees operation at 125°C junction temperature; thermal hysteresis ≤0.7 mV prevents offset drift after thermal cycling. |
Use Scenario: Class 0.2 smart electricity meter with metrology-grade ADC and anti-tampering monitoring. IC Role / Device Role / Timing Role: Primary reference for polyphase energy measurement ASIC requiring long-term stability. Use Value: 120 ppm long-term drift over 1000 hrs translates to <±0.0025% energy measurement error accumulation per year-meets IEC 62053-22 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3020AIDBZR | 2.048 V, ±0.2% initial tolerance, 50 ppm/°C max tempco, 65 μVrms noise, 50 μA min current - higher noise, looser tolerance, same package. | Not AEC-Q100 qualified; limited to industrial temp range (−40°C to 85°C) - unsuitable for under-hood automotive use. | Select when cost sensitivity outweighs automotive qualification and sub-40 μV noise requirement. |
| ADR3420ARJZ-R7 | 2.048 V, ±0.1% initial tolerance, 30 ppm/°C max tempco, 35 μVrms noise, 100 μA min current - lower noise/tempco, higher min current, same SOT-23. | Industrial temp only (−40°C to +125°C junction, but rated only to 85°C ambient); no automotive qualification. | Choose for lowest possible noise and tempco in non-automotive 16-bit+ systems where 100 μA min current is acceptable. |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, LM4050QBIM3-2.0/NOPB uniquely combines AEC-Q100 Grade 1 qualification, 60 μA ultra-low minimum current, and 41 μVrms noise in a production-proven shunt topology-making it the only option for automotive-grade, battery-constrained, high-resolution analog front-ends.
Availability
LM4050QBIM3-2.0/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition, automotive sensor conditioning, and energy metering applications requiring stable component supply, long-lifecycle support, and automotive-grade reliability.
Supply support for LM4050QBIM3-2.0/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 ICs and automotive electronics.
The LM4050-N product line delivers micropower shunt voltage references optimized for space-constrained, high-accuracy systems-including automotive, industrial, and portable instrumentation-where low drift, low noise, and qualification rigor are mandatory.
FAQ
What is the maximum operating current for LM4050QBIM3-2.0/NOPB?
The LM4050QBIM3-2.0/NOPB supports a maximum operating current of 15 mA. Exceeding this value risks exceeding the 280 mW power dissipation limit at 25°C ambient and may cause thermal shutdown or permanent damage. Derating is required above 25°C using RθJA = 287°C/W.
Does LM4050QBIM3-2.0/NOPB require an external output capacitor?
No, LM4050QBIM3-2.0/NOPB is internally compensated and stable without any output capacitor. It tolerates capacitive loads up to at least 10 μF, making it ideal for noise-sensitive applications where added capacitance might degrade transient response or introduce instability.
Is LM4050QBIM3-2.0/NOPB qualified for automotive use?
Yes, LM4050QBIM3-2.0/NOPB is AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient), manufactured on an automotive-grade flow, and specified for use in safety-critical automotive subsystems including engine control, ADAS sensors, and body electronics.
What is the thermal hysteresis specification for LM4050QBIM3-2.0/NOPB?
The thermal hysteresis of LM4050QBIM3-2.0/NOPB is ≤0.7 mV, measured as the voltage difference at 25°C before and after cycling between −40°C and +125°C. This low hysteresis minimizes calibration errors in systems subject to repeated thermal cycling.
Can LM4050QBIM3-2.0/NOPB be used with a 3.3 V supply?
Yes, LM4050QBIM3-2.0/NOPB can operate from a 3.3 V supply when paired with an appropriate series resistor (e.g., ~10 kΩ) to deliver ≥60 μA cathode current. At 3.3 V, headroom is sufficient for stable 2.048 V regulation while maintaining >10 μA margin above minimum current.
LM4050QBIM3-2.0/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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 34µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QBIM3-2.0/NOPB FAQ
1.How can I place an order for LM4050QBIM3-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBIM3-2.0/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 LM4050QBIM3-2.0/NOPB reliable?
The price and inventory of LM4050QBIM3-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBIM3-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBIM3-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBIM3-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBIM3-2.0/NOPB?
LM4050QBIM3-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBIM3-2.0/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 LM4050QBIM3-2.0/NOPB?
For technical support, including LM4050QBIM3-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBIM3-2.0/NOPB requirements.
6.How does Aetrix verify that LM4050QBIM3-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBIM3-2.0/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 LM4050QBIM3-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBIM3-2.0/NOPB?
All LM4050QBIM3-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBIM3-2.0/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 LM4050QBIM3-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBIM3-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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