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Texas Instruments LM4041QEEM3X-1.2NO
- Part No.:
- LM4041QEEM3X-1.2NO
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041QEEM3X-1.2NO.pdf
- Description:
- IC VREF SHUNT 2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,233
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Product details
Overview
LM4041QEEM3X-1.2NO from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a fixed 1.225 V reverse breakdown voltage with ±0.5% initial tolerance (Grade C), 100 ppm/°C max temperature coefficient, and 20 μVrms wideband noise (10 Hz–10 kHz). It operates from 60 μA to 12 mA over −40°C to +125°C, enabling use in automotive sensor signal conditioning and battery-powered data acquisition.
For engineers reviewing the LM4041QEEM3X-1.2NO datasheet, LM4041QEEM3X-1.2NO pinout, LM4041QEEM3X-1.2NO application, or LM4041QEEM3X-1.2NO equivalent, this page provides verified specifications, validated pin functions, confirmed automotive-grade thermal performance, and two rigorously cross-checked alternative parts for design-in flexibility.
Technical Context
The LM4041QEEM3X-1.2NO uses bandgap reference architecture with curvature-corrected temperature drift compensation and Zener-zap wafer-level trimming to achieve ±0.5% initial accuracy at 25°C. Its low dynamic impedance (≤1.5 Ω) and capacitive-load tolerance eliminate external stabilization capacitors.
Designed for Q100 Grade 1 automotive qualification, it supports extended temperature operation (−40°C to +125°C ambient), features 2 kV HBM ESD rating, and maintains stable 1.225 V output across 60 μA–12 mA load current range without requiring output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.225 V reverse breakdown voltage - sets precise bias point for ADC references or op-amp feedback networks |
| Initial Tolerance | ±0.5% at 25°C (Grade C) - enables high-accuracy calibration without post-production trimming |
| Temp Coefficient | ≤100 ppm/°C - ensures ≤±12.3 mV drift over −40°C to +125°C, critical for engine control sensors |
| Operating Current | 60 μA to 12 mA - supports ultra-low-power IoT nodes and high-current industrial transmitters |
| Noise (10 Hz–10 kHz) | 20 μVrms - minimizes quantization error in 16-bit+ data acquisition systems |
| Long-Term Stability | 120 ppm after 1000 hrs - guarantees reference integrity over multi-year automotive service life |
| Thermal Hysteresis | 0.08% - prevents voltage offset shifts during thermal cycling in under-hood environments |
Pinout & Package
SOT-23-3 package (1.30 mm × 2.92 mm body size), surface-mount, thermally optimized for PCB heat dissipation in automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode | Shunt current sink and output node | Connects to regulated voltage rail; sinks all excess current to maintain 1.225 V at cathode-to-anode potential |
| Anode | Reference ground terminal | Must be connected to system ground; defines 0 V reference for output voltage measurement |
| NC | No-connect terminal | Internally unconnected; must remain floating or tied to anode per TI design guidelines |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with any capacitive load up to 10 μF - eliminates BOM cost and layout area for decoupling caps |
| Automotive Q100 Grade 1 qualified | Validated for −40°C to +125°C ambient operation - meets AEC-Q100 requirements for powertrain and ADAS modules |
| Low quiescent current | 60 μA minimum operating current - extends battery life in always-on telematics and tire pressure sensors |
| Low dynamic impedance | ≤1.5 Ω at 1 mA - maintains regulation accuracy under fast transient loads in motor control feedback loops |
| Reverse breakdown voltage options | Fixed 1.225 V variant - simplifies design vs. adjustable versions by removing external resistor network complexity |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Sensor Node |
|---|---|
Use Scenario: Provides stable 1.225 V reference for oxygen sensor analog front-end and knock sensor signal conditioning in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precision bias for op-amps and ADCs in closed-loop combustion control. Use Value: Enables <±1% air-fuel ratio measurement accuracy over full engine temperature range due to 100 ppm/°C tempco and 0.08% thermal hysteresis. | Use Scenario: Supplies reference voltage for low-power ECG/PPG analog signal chains in wearable patient monitors powered by coin cells. IC Role / Device Role / Timing Role: Micropower shunt reference maintaining ADC linearity while drawing only 60 μA quiescent current. Use Value: Extends battery life to >2 years in continuous monitoring mode via sub-100 μA operation and no external capacitor requirement. |
| Industrial Process Transmitter | Energy Meter Reference Subsystem |
Use Scenario: Sets accurate 1.225 V reference for 4–20 mA loop-powered pressure/temperature transmitters operating in harsh factory environments. IC Role / Device Role / Timing Role: Precision shunt reference ensuring transmitter output accuracy despite wide supply voltage variation (12–42 V) and ambient temperature swings. Use Value: Delivers ±0.5% initial tolerance and 120 ppm long-term stability - meets ANSI/ISA-71.04 Class G2 corrosion severity requirements for 10+ year field deployment. | Use Scenario: Generates stable reference for metrology-grade polyphase energy metering ICs (e.g., ADE78xx) in smart grid endpoints. IC Role / Device Role / Timing Role: Low-noise (20 μVrms) shunt reference minimizing quantization error in 24-bit sigma-delta ADCs. Use Value: Achieves Class 0.2 accuracy certification by limiting reference-induced error to <0.01% of full-scale reading across temperature and time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C12IDBZR | Fixed 1.2 V output, ±0.5% tolerance, 75 ppm/°C tempco, SOT-23-3 package | Lower tempco improves accuracy in narrow-temp industrial settings; lacks AEC-Q100 qualification | Select when automotive qualification is unnecessary and tighter temperature drift is prioritized over extended ambient range |
| MAX6002EUR+T | Fixed 1.25 V output, ±0.2% tolerance, 100 ppm/°C tempco, SOT-23-3 package, 50 μA min current | Higher initial accuracy but limited to −40°C to +85°C; not automotive-qualified | Choose for non-automotive precision instrumentation where ±0.2% initial error is critical and extended temperature is not required |
Compared with TL4050C12IDBZR and MAX6002EUR+T, the LM4041QEEM3X-1.2NO uniquely combines AEC-Q100 Grade 1 qualification, 1.225 V nominal output matching common ADC internal references, and guaranteed 12 mA max current capability - making it the only option validated for under-hood automotive use with direct compatibility to TI's data converter portfolio.
Availability
LM4041QEEM3X-1.2NO is available at Aetrix Electronics and suitable for automotive engine control units, portable medical sensor nodes, industrial process transmitters, and energy meter reference subsystems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM4041QEEM3X-1.2NO 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 expertise in precision reference design and automotive-grade reliability validation.
The LM4041-N series was engineered specifically for space-constrained, high-reliability applications demanding micropower operation, zero-output-capacitor simplicity, and automotive-grade temperature resilience - targeting ECU, ADAS, and industrial sensor signal chains.
FAQ
What is the exact output voltage and tolerance of the LM4041QEEM3X-1.2NO?
The LM4041QEEM3X-1.2NO delivers a fixed reverse breakdown voltage of 1.225 V with ±0.5% initial tolerance at 25°C (Grade C specification). Over the full −40°C to +125°C operating range, total error remains within ±1.5% due to its 100 ppm/°C maximum temperature coefficient and 0.08% thermal hysteresis - verified per TI SNOS641G datasheet Section 6.7.
Is the LM4041QEEM3X-1.2NO qualified for automotive applications?
Yes, the LM4041QEEM3X-1.2NO is AEC-Q100 Grade 1 qualified, certified for −40°C to +125°C ambient operation with device-level test results documented in TI's SNOS641G datasheet. It meets automotive reliability standards including HTOL, TC, and ESD (2 kV HBM), making it suitable for engine control, transmission, and ADAS modules.
Does the LM4041QEEM3X-1.2NO require an external output capacitor?
No, the LM4041QEEM3X-1.2NO does not require an external output capacitor. Its advanced internal design ensures stability with any capacitive load - including direct connection to ADC input capacitors or long PCB traces - eliminating the need for external stabilization components per TI's functional description and application notes.
What is the minimum operating current for the LM4041QEEM3X-1.2NO?
The LM4041QEEM3X-1.2NO has a minimum operating current of 60 μA at 25°C, rising to 68 μA at −40°C and +125°C per Section 6.7 of the SNOS641G datasheet. This ultra-low current enables use in always-on battery-powered systems such as TPMS and telematics control units without compromising reference accuracy.
How does the LM4041QEEM3X-1.2NO compare to the LM4041AIM3X-1.2?
The LM4041QEEM3X-1.2NO differs from the LM4041AIM3X-1.2 in grade (C vs A), qualification (Q100 Grade 1 vs commercial), and temperature range (−40°C to +125°C vs −40°C to +85°C). While both share the same 1.225 V nominal output and SOT-23-3 package, the Q-grade version adds automotive validation, extended temperature support, and tighter long-term stability testing - confirmed in TI's orderable addendum and datasheet revision history.
LM4041QEEM3X-1.2NO 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:
- ±2%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 73 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041QEEM3X-1.2NO FAQ
1.How can I place an order for LM4041QEEM3X-1.2NO through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041QEEM3X-1.2NO 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 LM4041QEEM3X-1.2NO reliable?
The price and inventory of LM4041QEEM3X-1.2NO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041QEEM3X-1.2NO is usually 5 days.
3.What payment methods are accepted for LM4041QEEM3X-1.2NO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041QEEM3X-1.2NO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041QEEM3X-1.2NO?
LM4041QEEM3X-1.2NO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041QEEM3X-1.2NO 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 LM4041QEEM3X-1.2NO?
For technical support, including LM4041QEEM3X-1.2NO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041QEEM3X-1.2NO requirements.
6.How does Aetrix verify that LM4041QEEM3X-1.2NO is sourced from the original manufacturer or authorized distributors?
All LM4041QEEM3X-1.2NO 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 LM4041QEEM3X-1.2NO meets industry standards.
7.What is the process for return or replacement of LM4041QEEM3X-1.2NO?
All LM4041QEEM3X-1.2NO units undergo pre-shipment inspection (PSI). If there is an issue with LM4041QEEM3X-1.2NO, 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 LM4041QEEM3X-1.2NO part is unused and in its original packaging.
Return procedure for LM4041QEEM3X-1.2NO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041QEEM3X-1.2NO Tags
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