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Texas Instruments LM4041EIM7X-1.2/NOPB
- Part No.:
- LM4041EIM7X-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041EIM7X-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,865
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Product details
Overview
LM4041EIM7X-1.2/NOPB from Texas Instruments is a precision 1.225 V shunt voltage reference in SOT-23-3 package, rated for extended temperature operation (−40°C to +125°C), with ±2.0% initial tolerance (Grade E), 100 ppm/°C max temperature coefficient, and 20 μVRMS wideband noise (10 Hz–10 kHz). It delivers stable reference performance in low-power data-acquisition front-ends and automotive sensor signal conditioning circuits.
For engineers reviewing the LM4041EIM7X-1.2/NOPB datasheet, LM4041EIM7X-1.2/NOPB pinout, LM4041EIM7X-1.2/NOPB application, or LM4041EIM7X-1.2/NOPB equivalent, key selection criteria include its Grade E accuracy over extended temperature, no-output-capacitor requirement, capacitive-load tolerance, 60 μA minimum operating current, and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4041EIM7X-1.2/NOPB implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation and Zener-zap wafer-level trimming. Its reverse breakdown voltage is fixed at 1.225 V and specified under 100 μA test current.
It operates as a two-terminal device: cathode supplies output voltage and shunt current path, while anode connects to system ground. The design eliminates external stabilization capacitors and maintains stability across capacitive loads up to 10 nF, enabling direct integration into high-impedance ADC bias networks and precision comparator thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal; fixed value set by internal bandgap/Zener structure, used as stable reference for ADCs, DACs, and comparators |
| Initial Tolerance | ±2.0% at 25°C (Grade E); corresponds to ±24.5 mV absolute error, suitable for non-critical calibration or coarse sensing |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +125°C; contributes ≤122.5 μV/°C drift, critical for automotive and industrial ambient variations |
| Operating Current | 60 μA to 12 mA range; enables ultra-low-power battery operation while supporting >10 kΩ load impedance |
| Output Noise | 20 μVRMS (10 Hz–10 kHz); low enough for 12-bit to 14-bit precision systems without additional filtering |
| Dynamic Impedance | ≤1.5 Ω at 1 mA; ensures minimal load regulation error (<1.5 mV per mA) in varying-current applications |
| Long-Term Stability | 120 ppm after 1000 hours; indicates <0.012% parametric shift during early-life burn-in |
Pinout & Package
SOT-23-3 package (DBZ), body size 1.30 mm × 2.92 mm, surface-mount, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current sink and output node | Provides 1.225 V reference voltage; must be connected to load and current-setting resistor; sinks all operating current |
| Anode (Pin 2) | Ground reference terminal | Internally tied to substrate ground; must be connected to system ground plane for stable operation and thermal performance |
| NC (Pin 3) | No-connect terminal | Not internally bonded; must remain floating or tied to anode per TI layout guidance to suppress EMI coupling |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct connection to high-impedance nodes (e.g., ADC REF+ inputs) without stability risk or board area penalty |
| Tolerates capacitive loads | Stable with up to 10 nF load capacitance-supports RC filtering, ESD protection, or long trace routing without oscillation |
| Extended temperature grade | Specified from −40°C to +125°C ambient, qualified per AEC-Q100 Grade 1, enabling use in engine control and under-hood modules |
| Low quiescent current | 60 μA minimum operating current allows integration into always-on wake-up circuits and energy-harvesting sensors |
| Small SOT-23 footprint | 1.30 mm × 2.92 mm outline reduces PCB real estate by >50% vs TO-92, ideal for portable and dense automotive ECUs |
Applications
| Battery-Powered Data Loggers | Automotive Cabin Temperature Sensors |
|---|---|
|
Use Scenario: Continuous 12-bit ADC sampling of thermistor voltage in coin-cell-powered environmental monitors. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V for ratiometric ADC conversion, eliminating supply-voltage dependency. Use Value: Enables 0.1°C resolution over −20°C to +70°C with <1 LSB drift due to LM4041EIM7X-1.2/NOPB's 100 ppm/°C tempco and 20 μVRMS noise. |
Use Scenario: Signal conditioning for NTC thermistors in HVAC control modules mounted near vehicle dashboards. IC Role / Device Role / Timing Role: Precision voltage reference for op-amp-based thermistor interface, operating across full automotive ambient range. Use Value: Maintains <±0.5°C accuracy from −40°C to +125°C ambient using LM4041EIM7X-1.2/NOPB's AEC-Q100 Grade 1 qualification and 125°C junction rating. |
| Industrial Process Transmitters | Smart Energy Meter Reference |
|
Use Scenario: 4–20 mA loop-powered transmitter measuring pressure via bridge sensor with microcontroller ADC. IC Role / Device Role / Timing Role: Low-power shunt reference supplying excitation and ADC reference in single-supply 3.3 V system. Use Value: Delivers stable 1.225 V at 100 μA operating point, minimizing self-heating and enabling <0.05% FSR linearity over 15-year field life. |
Use Scenario: High-accuracy polyphase electricity meter requiring metrology-grade voltage reference for 24-bit sigma-delta ADCs. IC Role / Device Role / Timing Role: Primary reference source for analog front-end, replacing larger, higher-cost series references. Use Value: Achieves Class 0.2 meter accuracy with LM4041EIM7X-1.2/NOPB's 120 ppm long-term stability and 20 μVRMS noise-no post-calibration needed. |
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 | Grade C (±0.5%), same SOT-23-3 package, but only rated for −40°C to +85°C industrial range | Lacks AEC-Q100 qualification and extended temperature support; unsuitable for under-hood or engine bay use | Select when cost sensitivity outweighs automotive qualification and full −40°C to +125°C coverage is unnecessary |
| MAX6008AEUR+T | 1.25 V output, ±0.2% initial accuracy, 75 ppm/°C tempco, SC70-3 package, 50 μA min current | Higher accuracy and lower tempco, but smaller SC70 footprint increases rework difficulty and limits thermal mass | Choose for metrology-grade portable instruments where 0.2% tolerance and 75 ppm/°C drift justify SC70 handling trade-offs |
Compared with LM4041EIM7X-1.2/NOPB, LM4040CIM3-1.2/NOPB trades extended temperature capability for tighter initial tolerance, while MAX6008AEUR+T offers superior accuracy and drift performance in a smaller package-both require reassessment of thermal design and qualification scope.
Availability
LM4041EIM7X-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, automotive electronics, and industrial process transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4041EIM7X-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, embedded processing, and power management ICs, with decades of expertise in precision reference design and automotive qualification.
The LM4041-N family was engineered for space-constrained, low-power applications demanding stable voltage references across harsh environments-including automotive, industrial, and portable instrumentation systems.
FAQ
What is the maximum operating temperature for LM4041EIM7X-1.2/NOPB?
The LM4041EIM7X-1.2/NOPB is rated for operation from −40°C to +125°C ambient temperature and qualified per AEC-Q100 Grade 1. Its maximum junction temperature is 125°C, and thermal derating must be applied above 25°C ambient based on its 291.9°C/W junction-to-ambient thermal resistance in the SOT-23 package.
Does LM4041EIM7X-1.2/NOPB require an external capacitor for stability?
No, the LM4041EIM7X-1.2/NOPB does not require an external output capacitor. Its internal design ensures unconditional stability even with capacitive loads up to 10 nF, simplifying layout and reducing BOM count compared to older shunt references that mandate 1–10 nF ceramic caps.
What is the meaning of the 'E' grade in LM4041EIM7X-1.2/NOPB?
The 'E' grade denotes ±2.0% initial reverse breakdown voltage tolerance at 25°C, corresponding to ±24.5 mV error on the 1.225 V output. This grade targets cost-sensitive applications where moderate accuracy suffices-such as non-critical sensor biasing or coarse calibration-while retaining full extended-temperature performance.
Can LM4041EIM7X-1.2/NOPB be used in automotive applications?
Yes, LM4041EIM7X-1.2/NOPB is AEC-Q100 qualified (Grade 1) and explicitly designed for automotive use. It meets requirements for −40°C to +125°C ambient operation, ESD robustness (±2 kV HBM), and long-term reliability in safety-critical subsystems like cabin climate control and battery monitoring.
How does the LM4041EIM7X-1.2/NOPB pinout differ from the adjustable version?
The LM4041EIM7X-1.2/NOPB uses a 3-pin SOT-23 configuration with Cathode (Pin 1), Anode (Pin 2), and NC (Pin 3). Unlike the adjustable LM4041x-ADJ variants-which repurpose Pin 1 as FB and Pin 3 as Cathode-the fixed 1.225 V version has no feedback pin and operates strictly as a two-terminal shunt device.
LM4041EIM7X-1.2/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4041EIM7X-1.2/NOPB FAQ
1.How can I place an order for LM4041EIM7X-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041EIM7X-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 LM4041EIM7X-1.2/NOPB reliable?
The price and inventory of LM4041EIM7X-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 LM4041EIM7X-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041EIM7X-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041EIM7X-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041EIM7X-1.2/NOPB?
LM4041EIM7X-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041EIM7X-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 LM4041EIM7X-1.2/NOPB?
For technical support, including LM4041EIM7X-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041EIM7X-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041EIM7X-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041EIM7X-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 LM4041EIM7X-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041EIM7X-1.2/NOPB?
All LM4041EIM7X-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041EIM7X-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 LM4041EIM7X-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041EIM7X-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041EIM7X-1.2/NOPB Tags
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