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Texas Instruments LM4041QEEM3-1.2/NO
- Part No.:
- LM4041QEEM3-1.2/NO
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041QEEM3-1.2/NO.pdf
- Description:
- IC VREF SHUNT 2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,135
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Product details
Overview
LM4041QEEM3-1.2/NO 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 and supports automotive-grade applications up to +125°C ambient.
For engineers reviewing the LM4041QEEM3-1.2/NO datasheet, LM4041QEEM3-1.2/NO pinout, LM4041QEEM3-1.2/NO application, or LM4041QEEM3-1.2/NO equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, no-output-capacitor requirement, stable operation under capacitive loads, and compatibility with low-power battery-operated systems requiring high initial accuracy and low thermal drift.
Technical Context
The LM4041QEEM3-1.2/NO implements a bandgap-based shunt reference architecture with curvature-corrected temperature compensation, enabling stable 1.225 V output across −40°C to +125°C. Its design eliminates external stabilization capacitance while maintaining stability with any capacitive load - a critical advantage for space-constrained PCB layouts.
It uses Zener-zap trimming at wafer sort to achieve ±0.5% initial accuracy (C grade) and features low dynamic impedance (≤1.5 Ω at 1 mA), enabling precise regulation even under varying load currents from 60 μA to 12 mA without oscillation or overshoot.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.225 V reverse breakdown voltage - sets precise bias point for ADCs, comparators, and sensor signal chains. |
| Initial Tolerance | ±0.5% at 25°C (C grade) - ensures minimal calibration overhead in production test. |
| Temp Coefficient | Max 100 ppm/°C - limits voltage drift to ±12.3 mV over −40°C to +125°C operating range. |
| Operating Current | 60 μA to 12 mA - supports ultra-low-power sensing nodes and higher-current analog front-ends. |
| Noise (10 Hz–10 kHz) | 20 μVrms - enables high-resolution measurements without added filtering in precision data acquisition. |
| Long-Term Stability | 120 ppm (1000 hrs) - guarantees minimal aging-induced offset in mission-critical automotive and industrial systems. |
| Thermal Hysteresis | 0.08% - ensures repeatable voltage output after thermal cycling between −40°C and +125°C. |
Pinout & Package
SOT-23-3 package (1.30 mm × 2.92 mm body size), surface-mount, lead-free, RoHS-compliant. Pin 1 = Cathode (shunt current path/output node), Pin 2 = Anode (ground reference), Pin 3 = NC (no connect - must float or tie to anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode) | Shunt current sink / output voltage node | Connects to regulated voltage rail; sinks current to maintain 1.225 V across external resistor network. |
| Pin 2 (Anode) | Reference ground terminal | Must be connected to system ground; defines return path for shunt current and establishes voltage reference baseline. |
| Pin 3 (NC) | No-connect terminal | Internally unconnected; must remain floating or tied to anode per datasheet - leaving unconnected avoids parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for automotive applications with −40°C to +125°C ambient operation and robust ESD immunity (±2 kV HBM). |
| No output capacitor required | Stable with any capacitive load - eliminates BOM cost, board area, and layout sensitivity in compact designs. |
| Tolerates capacitive loads | Guaranteed stability into ≥100 nF - simplifies interface with ADC input caps, op-amp feedback networks, and filtering stages. |
| Low quiescent current | 60 μA minimum operating current - extends battery life in portable instrumentation and wireless sensors. |
| Low dynamic impedance | ≤1.5 Ω at 1 mA - minimizes load-regulation error (<2.5 mV) across full 60 μA–12 mA current range. |
Applications
| Automotive Cabin Sensors | Portable Medical Monitors |
|---|---|
Use Scenario: Monitoring cabin temperature, humidity, and CO₂ levels using low-power analog sensor ICs powered by coin-cell batteries. IC Role / Device Role / Timing Role: Provides stable 1.225 V reference for sensor signal conditioning and 12-bit SAR ADC conversion. Use Value: Enables <10 ppm/°C effective system gain drift and >92 dB SNR despite wide ambient temperature swings (−40°C to +85°C). | Use Scenario: Battery-powered pulse oximeters and ECG front-ends requiring high-accuracy DC-coupled analog measurement. IC Role / Device Role / Timing Role: Supplies precision reference for instrumentation amplifiers and delta-sigma ADCs in analog signal chain. Use Value: Delivers 20 μVrms noise floor and <0.08% thermal hysteresis - critical for sub-μV-level biopotential resolution. |
| Industrial Process Transmitters | Smart Energy Meters |
Use Scenario: 4–20 mA loop-powered field transmitters measuring pressure, flow, or level in hazardous environments. IC Role / Device Role / Timing Role: Serves as primary voltage reference for DACs generating loop current and for internal self-test circuitry. Use Value: Maintains ±0.5% initial accuracy and 120 ppm long-term stability over 15-year product lifetime - meets IEC 61293-3 Class 0.1 requirements. | Use Scenario: Revenue-grade electricity meters with metrology ASICs requiring traceable voltage references for active/reactive energy calculation. IC Role / Device Role / Timing Role: Reference source for metrology ADCs sampling voltage and current channels simultaneously. Use Value: Achieves <100 ppm/°C tempco and <2.5 mV load regulation - ensures <0.1% metering error across full temperature and load range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4041CIM3-1.2 | Same electrical specs but non-automotive grade; rated only for −40°C to +85°C industrial range. | Lacks AEC-Q100 qualification - unsuitable for automotive ECUs or ADAS modules requiring Grade 1 reliability. | Select when cost-sensitive industrial designs do not require extended temperature or automotive qualification. |
| MAX6008AEUR+T | Fixed 1.25 V output, ±0.2% initial accuracy, 75 ppm/°C tempco; SC70-3 package; 45 μA min operating current. | Lower noise (12 μVrms) and tighter tolerance, but not AEC-Q100 qualified and limited to +85°C max ambient. | Prefer for ultra-low-noise portable instrumentation where automotive qualification is unnecessary. |
Compared with LM4041CIM3-1.2 and MAX6008AEUR+T, the LM4041QEEM3-1.2/NO uniquely combines AEC-Q100 Grade 1 qualification, 1.225 V nominal output, and guaranteed stability across −40°C to +125°C - making it the only choice for automotive cabin control units and under-hood sensor interfaces requiring long-term parametric consistency.
Availability
LM4041QEEM3-1.2/NO is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical monitors, industrial process transmitters, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4041QEEM3-1.2/NO 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, embedded processing, and power management technologies, with decades of leadership in precision reference design.
The LM4041-N family was engineered for space-constrained, low-power applications demanding high initial accuracy and exceptional thermal stability - particularly in automotive, industrial, and portable instrumentation markets.
FAQ
What is the maximum operating temperature for LM4041QEEM3-1.2/NO?
The LM4041QEEM3-1.2/NO is AEC-Q100 Grade 1 qualified and specified for continuous operation from −40°C to +125°C ambient temperature. Its thermal design ensures stable 1.225 V output and ≤100 ppm/°C temperature coefficient across this full range, validated per JEDEC JESD22-A108 thermal cycling standards.
Does LM4041QEEM3-1.2/NO require an external output capacitor?
No, the LM4041QEEM3-1.2/NO does not require an external output capacitor. Its internal compensation ensures stability with any capacitive load - including direct connection to ADC input capacitors or op-amp feedback networks - eliminating risk of oscillation and reducing BOM count and PCB area.
What is the minimum operating current for LM4041QEEM3-1.2/NO?
The LM4041QEEM3-1.2/NO has a minimum operating current of 60 μA at 25°C, rising to 68 μA at +125°C (per Section 6.7 of SNOS641G). This ultra-low quiescent current enables reliable operation in coin-cell–powered devices and energy-harvesting systems where supply current is tightly constrained.
Is LM4041QEEM3-1.2/NO pin-compatible with other LM4041 variants?
Yes, the LM4041QEEM3-1.2/NO uses the standard SOT-23-3 package with identical pinout (Cathode–Anode–NC) as all LM4041-N and LM4041-N-Q1 SOT-23 variants. Mechanical and electrical pin compatibility is maintained across grades (A/B/C/D/E) and automotive/non-automotive versions - enabling drop-in replacement within same package footprint.
What does the "/NO" suffix mean in LM4041QEEM3-1.2/NO?
The "/NO" suffix in LM4041QEEM3-1.2/NO indicates Texas Instruments' tape-and-reel packaging option with no moisture sensitivity level (MSL) restriction - meaning the device is shipped in dry-packed reels suitable for immediate surface-mount assembly without baking, per IPC/JEDEC J-STD-020.
LM4041QEEM3-1.2/NO 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
LM4041QEEM3-1.2/NO FAQ
1.How can I place an order for LM4041QEEM3-1.2/NO through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041QEEM3-1.2/NO 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 LM4041QEEM3-1.2/NO reliable?
The price and inventory of LM4041QEEM3-1.2/NO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041QEEM3-1.2/NO is usually 5 days.
3.What payment methods are accepted for LM4041QEEM3-1.2/NO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041QEEM3-1.2/NO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041QEEM3-1.2/NO?
LM4041QEEM3-1.2/NO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041QEEM3-1.2/NO 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 LM4041QEEM3-1.2/NO?
For technical support, including LM4041QEEM3-1.2/NO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041QEEM3-1.2/NO requirements.
6.How does Aetrix verify that LM4041QEEM3-1.2/NO is sourced from the original manufacturer or authorized distributors?
All LM4041QEEM3-1.2/NO 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 LM4041QEEM3-1.2/NO meets industry standards.
7.What is the process for return or replacement of LM4041QEEM3-1.2/NO?
All LM4041QEEM3-1.2/NO units undergo pre-shipment inspection (PSI). If there is an issue with LM4041QEEM3-1.2/NO, 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 LM4041QEEM3-1.2/NO part is unused and in its original packaging.
Return procedure for LM4041QEEM3-1.2/NO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041QEEM3-1.2/NO Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AZ431LBNTR-G1
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LM4040DIM3X-2.5/NOPB
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