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Texas Instruments LM4050BEM3-4.1/NOPB
- Part No.:
- LM4050BEM3-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BEM3-4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,194
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Product details
Overview
LM4050BEM3-4.1/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering 4.096 V nominal output with ±8.2 mV (±0.2%) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 73 μA to 15 mA, supports capacitive loads without external compensation, and targets high-accuracy analog signal conditioning in portable instrumentation.
For engineers reviewing the LM4050BEM3-4.1/NOPB datasheet, LM4050BEM3-4.1/NOPB pinout, LM4050BEM3-4.1/NOPB application, or LM4050BEM3-4.1/NOPB equivalent, this page provides verified electrical specifications, thermal behavior, industrial/extended temperature range operation (−40°C to 125°C), and validated alternative options for precision voltage reference selection.
Technical Context
The LM4050BEM3-4.1/NOPB uses bandgap-based Zener-zap trimmed reverse breakdown architecture with curvature-corrected temperature drift compensation. Its shunt topology requires an external current-limiting resistor and sinks load current through the cathode while referencing the anode to ground.
It achieves stability across 0–15 mA operating current and any capacitive load due to intrinsic low dynamic impedance (0.5 Ω typical at 1 mA) and no requirement for output capacitance-enabling compact, low-BOM-count designs in space-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal; fixed value enabling direct replacement of 4.1 V references in ADC/DAC biasing and sensor excitation circuits. |
| Initial Tolerance | ±8.2 mV (±0.2%) at 25°C; B-grade accuracy suitable for 12-bit to 14-bit data acquisition where <0.5 LSB error is required. |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C; ensures ≤±2.6 mV total drift across full extended temperature range. |
| Operating Current | 73 μA min to 15 mA max; ultra-low minimum current enables use in battery-powered devices with microamp-level sleep modes. |
| Output Noise | 93 μVrms (10 Hz–10 kHz); low enough for precision 16-bit SAR ADC reference without additional filtering. |
| Dynamic Impedance | 0.5 Ω typical at 1 mA; maintains stable regulation under fast load transients in closed-loop feedback paths. |
| Long-Term Stability | 120 ppm after 1000 hrs; predictable aging behavior critical for calibration-critical test equipment and metrology tools. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage regulation node | Connects to supply rail via current-setting resistor; sinks all load + reference current; defines regulated output voltage at this node. |
| Anode (Pin 2) | Reference ground return | Must be connected to system ground; serves as common return path for cathode current and load current; forms the 0 V reference point. |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or copper pour required; avoids unintended parasitic coupling or thermal stress. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables single-component reference solution in ultra-low-power sensor nodes and wearables where board space and leakage current are constrained. |
| Tolerates capacitive loads | Stable with >100 nF ceramic output capacitance-supports EMI filtering and transient suppression without oscillation risk. |
| Industrial & extended temp range | Specified from −40°C to 125°C; qualified for automotive underhood and industrial motor control environments without derating. |
| Low 93 μVrms noise | Meets noise floor requirements of 16-bit precision ADCs (e.g., ADS8860) without external low-noise op-amp buffering. |
| 50 ppm/°C max tempco | Reduces system calibration frequency in field-deployed instrumentation; eliminates need for software temperature compensation in many applications. |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Battery-powered environmental monitoring unit sampling thermocouples and RTDs at 1 Sa/s with 16-bit resolution. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.096 V for SAR ADC (e.g., ADS8860) and analog front-end PGA gain setting. Use Value: 73 μA minimum operating current extends 10-year battery life; 93 μVrms noise ensures <0.5 LSB error at full scale. |
Use Scenario: 4–20 mA loop-powered pressure transmitter operating in −40°C to 85°C ambient. IC Role / Device Role / Timing Role: Precision voltage reference for DAC-based current loop controller and sensor bridge excitation. Use Value: 50 ppm/°C tempco limits zero-drift to <±0.1% FS over temperature; SOT-23 footprint fits tight PCB real estate near sensor element. |
| Automotive Battery Monitoring | Calibration Equipment |
Use Scenario: In-vehicle 12 V battery health monitor measuring cell voltage with ±1 mV accuracy. IC Role / Device Role / Timing Role: Reference for isolated delta-sigma ADC (e.g., AMC1306) in high-side sensing circuit. Use Value: Extended −40°C to 125°C rating supports under-hood deployment; 120 ppm long-term stability reduces recalibration intervals. |
Use Scenario: Benchtop multimeter reference module requiring traceable 4.096 V output with <±0.01% uncertainty. IC Role / Device Role / Timing Role: Primary shunt reference in self-calibrating voltage source subsystem. Use Value: ±0.2% initial tolerance and thermal hysteresis of 1.148 mV enable Class I calibration-grade performance without oven control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C41IDBZR | Same 4.096 V output, C-grade (±0.5%), higher 100 μA min current, 100 μVrms noise | Lower accuracy and higher noise limit use in 12-bit systems only; better suited for cost-sensitive industrial controls | Select when ±0.5% tolerance and relaxed noise specs are acceptable and TI second-source assurance is required |
| REF43FH41IDBVR | Series reference, 4.096 V, A-grade (±0.05%), 3.5 μVrms noise, 1.2 mA quiescent current | Requires external bypass cap; higher power draw precludes battery operation; superior noise enables 20-bit ADCs | Choose for metrology-grade accuracy where ultra-low noise and <0.1 ppm/°C drift outweigh power and layout complexity |
Compared with TL4050C41IDBZR and REF43FH41IDBVR, the LM4050BEM3-4.1/NOPB uniquely balances B-grade precision, micropower operation, and capacitor-free stability-making it optimal for portable 14-bit data loggers and loop-powered transmitters where size, power, and reliability are co-constrained.
Availability
LM4050BEM3-4.1/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, and automotive battery monitoring requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050BEM3-4.1/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 leader specializing in analog and embedded processing technologies, with decades of leadership in precision reference design and automotive-qualified components.
The LM4050-N series was engineered for high-accuracy, low-power shunt reference applications in space-constrained, battery-operated, and harsh-environment systems-including portable test gear, industrial process sensors, and automotive subsystems.
FAQ
What is the minimum operating current for LM4050BEM3-4.1/NOPB?
The LM4050BEM3-4.1/NOPB requires a minimum operating current of 73 μA at 25°C and up to 78 μA across the extended −40°C to 125°C temperature range. This ultra-low current enables integration into energy-harvesting and coin-cell-powered systems without compromising regulation accuracy.
Does LM4050BEM3-4.1/NOPB require an output capacitor?
No, the LM4050BEM3-4.1/NOPB does not require an output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including large ceramic or tantalum bypass caps used for EMI suppression-reducing BOM count and PCB area in compact layouts.
What is the temperature coefficient specification for LM4050BEM3-4.1/NOPB?
The LM4050BEM3-4.1/NOPB has a maximum temperature coefficient of 50 ppm/°C over the full −40°C to 125°C range. This translates to a worst-case voltage drift of ±2.6 mV across the entire extended temperature span, supporting high-stability applications like calibrated sensor interfaces.
Is LM4050BEM3-4.1/NOPB qualified for automotive applications?
The LM4050BEM3-4.1/NOPB is not AEC-Q100 qualified; that designation applies only to the LM4050-N-Q1 variant. However, its extended −40°C to 125°C operating range and robust construction make it suitable for non-safety-critical automotive subsystems such as battery monitoring and cabin electronics when validated per customer requirements.
How does the noise performance of LM4050BEM3-4.1/NOPB compare to other shunt references?
The LM4050BEM3-4.1/NOPB delivers 93 μVrms wideband noise (10 Hz–10 kHz), which is lower than standard shunt references like TL431 (≈200 μVrms) and competitive with mid-tier series references. This enables direct use with 16-bit SAR ADCs without additional low-noise buffering, preserving signal integrity in precision measurement chains.
LM4050BEM3-4.1/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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 78 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BEM3-4.1/NOPB FAQ
1.How can I place an order for LM4050BEM3-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BEM3-4.1/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 LM4050BEM3-4.1/NOPB reliable?
The price and inventory of LM4050BEM3-4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BEM3-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050BEM3-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BEM3-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BEM3-4.1/NOPB?
LM4050BEM3-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BEM3-4.1/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 LM4050BEM3-4.1/NOPB?
For technical support, including LM4050BEM3-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BEM3-4.1/NOPB requirements.
6.How does Aetrix verify that LM4050BEM3-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050BEM3-4.1/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 LM4050BEM3-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050BEM3-4.1/NOPB?
All LM4050BEM3-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BEM3-4.1/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 LM4050BEM3-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4050BEM3-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050BEM3-4.1/NOPB Tags
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AZ431LANTR-G1
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