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Texas Instruments LM4041CEM3-1.2/NOPB
- Part No.:
- LM4041CEM3-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041CEM3-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
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Product details
Overview
LM4041CEM3-1.2/NOPB from Texas Instruments is a precision 1.225 V shunt voltage reference in SOT-23 package, rated for extended temperature operation (−40°C to +125°C), with ±0.5% initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and 20 μVRMS wideband noise (10 Hz–10 kHz). It serves as a stable reference in high-accuracy analog signal chains for battery-powered instrumentation.
For engineers reviewing the LM4041CEM3-1.2/NOPB datasheet, LM4041CEM3-1.2/NOPB pinout, LM4041CEM3-1.2/NOPB application, or LM4041CEM3-1.2/NOPB equivalent, key selection criteria include its Grade C accuracy over extended temperature, no-output-capacitor requirement, capacitive load tolerance, low 60 μA minimum operating current, and automotive-qualified AEC-Q100 Grade 1 compliance.
Technical Context
The LM4041CEM3-1.2/NOPB uses Zener-zap trimmed bandgap architecture with curvature-corrected temperature drift compensation to maintain stable reverse breakdown voltage across −40°C to +125°C. Its dynamic impedance is ≤1.5 Ω at 1 mA, enabling tight regulation under varying load currents from 60 μA to 12 mA.
Unlike series references, it operates as a two-terminal shunt device: cathode supplies output voltage while anode connects to system ground. The SOT-23 package supports board-level thermal management via 291.9°C/W junction-to-ambient resistance, and its feedback pin is unused (NC) in fixed-voltage configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal - precise, factory-trimmed reference point for ADC/DAC biasing and sensor excitation |
| Initial Tolerance | ±6 mV (±0.5%) at 25°C - enables <1 LSB error in 12-bit systems without calibration |
| Temp Coefficient | ≤100 ppm/°C - ensures <±0.123 mV drift over full −40°C to +125°C range |
| Operating Current | 60 μA to 12 mA - supports ultra-low-power sensing and high-current reference buffering |
| Output Noise | 20 μVRMS (10 Hz–10 kHz) - suitable for 16-bit SAR ADCs without external filtering |
| Dynamic Impedance | ≤1.5 Ω at 1 mA - minimizes load-induced voltage shift in precision divider networks |
| Long-Term Stability | 120 ppm (1000 hrs) - predictable aging behavior for metrology-grade designs |
Pinout & Package
SOT-23 (DBZ) package: 1.30 mm × 2.92 mm body, 3-pin surface-mount, JEDEC MO-178 compatible. Thermal resistance RθJA = 291.9°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt output node | Provides 1.225 V reference voltage; sinks current from external resistor to set operating point |
| Anode (Pin 2) | Ground reference | Must be connected to system ground; defines return path for shunt current |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must float or tie to anode per EMI mitigation guidance |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Eliminates BOM cost and layout area; stable with zero external capacitance |
| Tolerates capacitive loads | Supports direct connection to ADC input caps or long PCB traces without oscillation |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient range (−40°C to +125°C) per stress test requirements |
| Low 60 μA minimum current | Enables use in coin-cell-powered devices with multi-year battery life |
| Reverse breakdown options | Fixed 1.225 V variant avoids external resistor network complexity of adjustable versions |
Applications
| Battery-Powered Instrumentation | Data-Acquisition Systems |
|---|---|
Use Scenario: Portable multimeter measuring DC voltage with 0.1% accuracy over temperature. IC Role / Device Role / Timing Role: Provides stable 1.225 V reference for 16-bit sigma-delta ADC front-end. Use Value: Enables single-point calibration at room temperature while maintaining <±0.5 mV error across −10°C to +50°C operating range. | Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Supplies precision reference for programmable gain instrumentation amplifier and SAR ADC. Use Value: Guarantees <±0.02% full-scale error contribution across 15-year product lifecycle, meeting IEC 61000-4 immunity requirements. |
| Energy Metering | Automotive Body Control Module |
Use Scenario: Smart electricity meter performing Class 0.5 active energy measurement. IC Role / Device Role / Timing Role: Reference source for metrology-grade ADC sampling current/voltage transformers. Use Value: Delivers <±10 ppm/°C effective tempco after system calibration, satisfying ANSI C12.20 accuracy class. | Use Scenario: In-vehicle temperature sensor interface in HVAC control unit. IC Role / Device Role / Timing Role: Stable bias for thermistor bridge and op-amp signal conditioning stage. Use Value: Maintains <±0.2°C measurement uncertainty over full vehicle cabin temperature range (−40°C to +85°C) without software compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3-1.2/NOPB | Same 1.225 V output and ±0.5% tolerance, but rated only for industrial range (−40°C to +85°C); no AEC-Q100 qualification | Lacks extended temperature validation and automotive stress testing; unsuitable for under-hood or powertrain modules | Select when cost sensitivity outweighs extended temp or automotive compliance needs |
| MAX6008AEUR+T | 1.25 V output, ±0.2% initial accuracy, 75 ppm/°C tempco; SC70-3 package; higher 100 μA min current | Higher accuracy but incompatible output voltage; requires redesign of resistor network and layout | Choose only if 1.25 V reference is acceptable and tighter initial tolerance justifies requalification effort |
Compared with LM4040CIM3-1.2/NOPB, the LM4041CEM3-1.2/NOPB adds AEC-Q100 Grade 1 qualification and extended temperature support without increasing footprint or quiescent current. Against MAX6008AEUR+T, it trades 0.025 V output offset and 0.3% tolerance margin for guaranteed automotive reliability and lower minimum operating current.
Availability
LM4041CEM3-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, energy metering, and automotive electronics requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4041CEM3-1.2/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 experience in precision reference design and automotive-grade component validation.
The LM4041-N series was engineered for high-accuracy, low-power shunt reference applications in space-constrained systems-particularly where extended temperature operation, AEC-Q100 compliance, and minimal external components are critical.
FAQ
What is the maximum operating current for LM4041CEM3-1.2/NOPB?
The LM4041CEM3-1.2/NOPB supports a maximum operating current of 12 mA. This upper limit ensures safe power dissipation within the SOT-23 package's 306 mW rating at 25°C ambient, while maintaining stable 1.225 V output across the full −40°C to +125°C temperature range. Exceeding 12 mA risks thermal overload and parametric shift.
Does LM4041CEM3-1.2/NOPB require an external capacitor for stability?
No, the LM4041CEM3-1.2/NOPB does not require an external output capacitor. Its internal design provides inherent stability across all operating conditions, including zero-load and capacitive loads up to several nanofarads. This eliminates capacitor-related BOM cost, board area, and potential phase-margin issues in sensitive analog circuits.
Is LM4041CEM3-1.2/NOPB qualified for automotive applications?
Yes, LM4041CEM3-1.2/NOPB is AEC-Q100 qualified as Grade 1, certified for ambient temperatures from −40°C to +125°C. It meets automotive stress test requirements including HTOL, TC, and ESD (HBM ±2 kV), making it suitable for body control, HVAC, and non-safety-critical powertrain subsystems.
What is the thermal hysteresis specification for LM4041CEM3-1.2/NOPB?
The LM4041CEM3-1.2/NOPB exhibits 0.08% thermal hysteresis-defined as the voltage difference measured at +25°C after cycling between −40°C and +125°C. This corresponds to ≤0.98 mV deviation for the 1.225 V output, ensuring repeatable reference performance in systems subject to repeated thermal cycling.
Can LM4041CEM3-1.2/NOPB be used in place of LM4041AIM3-1.2/NOPB?
LM4041CEM3-1.2/NOPB can replace LM4041AIM3-1.2/NOPB only if ±0.5% initial tolerance (vs. ±0.1%) and 100 ppm/°C tempco (vs. 100 ppm/°C max, same spec) are acceptable. Both share identical SOT-23 pinout and operating current range, but the A-grade part offers tighter accuracy for metrology-grade applications where calibration headroom is limited.
LM4041CEM3-1.2/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):
- 1.225V
- Voltage - Output (Max):
- -
- Current - Output:
- 12 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 68 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041CEM3-1.2/NOPB FAQ
1.How can I place an order for LM4041CEM3-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041CEM3-1.2/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 LM4041CEM3-1.2/NOPB reliable?
The price and inventory of LM4041CEM3-1.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041CEM3-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041CEM3-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041CEM3-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041CEM3-1.2/NOPB?
LM4041CEM3-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041CEM3-1.2/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 LM4041CEM3-1.2/NOPB?
For technical support, including LM4041CEM3-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041CEM3-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041CEM3-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041CEM3-1.2/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 LM4041CEM3-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041CEM3-1.2/NOPB?
All LM4041CEM3-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041CEM3-1.2/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 LM4041CEM3-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041CEM3-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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