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Texas Instruments LM4041EIM7-1.2/NOPB
- Part No.:
- LM4041EIM7-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041EIM7-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
LM4041EIM7-1.2/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 ±25 mV (±2.0%) 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 LM4041EIM7-1.2/NOPB datasheet, LM4041EIM7-1.2/NOPB pinout, LM4041EIM7-1.2/NOPB application, or LM4041EIM7-1.2/NOPB equivalent, key selection criteria include its extended-temperature-grade shunt topology, no-output-capacitor requirement, capacitive-load stability, 60 μA minimum operating current, and automotive qualification per AEC-Q100 Grade 1.
Technical Context
The LM4041EIM7-1.2/NOPB implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation and Zener-zap wafer-level trimming to achieve ±2.0% initial accuracy. Its three-terminal configuration operates in reverse breakdown mode, sinking current through the cathode while maintaining a precise 1.225 V across anode-to-cathode.
Designed for space-constrained systems, it eliminates external stabilization capacitors and tolerates arbitrary capacitive loads without oscillation. The device supports stable operation from 60 μA to 12 mA, with low dynamic impedance (≤2 Ω) and thermal hysteresis of only 0.08% over −40°C to +125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal; fixed value, no external feedback required |
| Initial Tolerance | ±25 mV (±2.0%) at 25°C; grade-E specification per TI datasheet |
| Temp Coefficient | ≤150 ppm/°C over −40°C to +125°C; ensures <±18.4 mV total drift in extended range |
| Operating Current | 60 μA to 12 mA; enables ultra-low-power and high-current sensing applications |
| Output Noise | 20 μVRMS (10 Hz–10 kHz); suitable for 16-bit+ ADC reference and precision DAC biasing |
| Dynamic Impedance | ≤2 Ω at 1 mA; maintains regulation under fast load transients |
| Long-Term Stability | 120 ppm after 1000 hrs; predictable aging behavior for metrology-grade designs |
Pinout & Package
SOT-23-3 package (DBZ), 1.30 mm × 2.92 mm body size, with gull-wing leads. Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC (must float or connect to anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt output node | Sinks current to maintain 1.225 V across anode–cathode; connects to regulated node |
| Anode (Pin 2) | Reference ground reference | Typically connected to system ground; defines voltage reference point |
| NC (Pin 3) | No-connect terminal | Must be left floating or tied to anode; not internally connected |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Reduces BOM count and PCB area; eliminates capacitor aging and ESR-related instability |
| Tolerates capacitive loads | Enables direct connection to ADC input caps, LDO bypasses, or long traces without phase margin loss |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient range (−40°C to +125°C); supports engine control and ADAS modules |
| Low 60 μA minimum current | Extends battery life in portable gas sensors, wearables, and remote IoT nodes |
| 20 μVRMS noise (10 Hz–10 kHz) | Supports ≥16-bit effective resolution in precision data acquisition without external filtering |
Applications
| Battery-Powered Instrumentation | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Portable multimeter front-end requiring stable reference under varying battery voltage and temperature. IC Role / Device Role / Timing Role: Shunt voltage reference providing 1.225 V for ADC full-scale calibration and sensor excitation. Use Value: Enables ±0.1% measurement accuracy over −20°C to +70°C with no warm-up delay or capacitor dependency. |
Use Scenario: Fuel injector driver circuit needing rail-independent reference for current-sense amplifier offset correction. IC Role / Device Role / Timing Role: Precision shunt reference supplying stable bias to op-amp inputs in high-noise powertrain environment. Use Value: Maintains <±20 mV error across −40°C to +125°C ambient, meeting ASIL-B functional safety monitoring requirements. |
| Industrial Process Transmitter | Smart Energy Metering |
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART modulation capability. IC Role / Device Role / Timing Role: Reference source for DAC generating analog output and for internal ADC measuring sensor bridge. Use Value: Delivers <±0.2% total error over 15-year field life, satisfying IEC 61293 Class 0.1 accuracy class. |
Use Scenario: Polyphase electricity meter requiring metrology-grade voltage reference for anti-tampering detection. IC Role / Device Role / Timing Role: Primary reference for 24-bit sigma-delta ADC measuring grid voltage and current simultaneously. Use Value: Provides 20 μVRMS noise floor and <±15 ppm/°C drift, enabling 0.1% billing accuracy across seasonal temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4041CIM7-1.2/NOPB | ±0.5% initial tolerance (±6 mV), 100 ppm/°C max tempco, same SOT-23-3 package | Higher accuracy required in lab-grade DMMs or medical diagnostics where ±2% error is unacceptable | Select when tighter initial tolerance justifies cost premium and thermal drift budget allows 100 ppm/°C |
| MAX6008AEUR+T | 1.25 V output, ±0.2% initial accuracy, 75 ppm/°C max tempco, SC70-3 package | Lower noise (12 μVRMS) and better tempco suit portable oscilloscope front-ends | Choose for ultra-low-noise, compact layouts where SC70 footprint is acceptable and 1.25 V matches system scaling |
Compared with LM4041CIM7-1.2/NOPB, the LM4041EIM7-1.2/NOPB trades initial accuracy for lower cost and broader automotive qualification; versus MAX6008AEUR+T, it offers AEC-Q100 Grade 1 compliance and higher current drive but with higher noise and looser tolerance-making it optimal for cost-sensitive, high-reliability industrial and automotive sensing.
Availability
LM4041EIM7-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive engine control units, and industrial process transmitters requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4041EIM7-1.2/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 expertise in precision reference design and automotive-grade reliability validation.
The LM4041-N series was developed to deliver high-accuracy, micro-power shunt references for space-constrained, mission-critical applications across automotive, industrial, and portable instrumentation markets.
FAQ
What is the maximum operating current for LM4041EIM7-1.2/NOPB?
The LM4041EIM7-1.2/NOPB supports a maximum operating current of 12 mA. This upper limit ensures stable regulation and thermal safety within the SOT-23 package's 306 mW power dissipation rating at 25°C ambient. Exceeding 12 mA risks exceeding junction temperature limits and degrading long-term stability.
Does LM4041EIM7-1.2/NOPB require an external capacitor for stability?
No, the LM4041EIM7-1.2/NOPB does not require an external output capacitor. Its internal design provides unconditional stability with any capacitive load, including direct connection to ADC input capacitors or long PCB traces-eliminating capacitor-related aging, ESR effects, and layout sensitivity.
Is LM4041EIM7-1.2/NOPB qualified for automotive use?
Yes, LM4041EIM7-1.2/NOPB is AEC-Q100 qualified as Grade 1, certified for operation from −40°C to +125°C ambient temperature. It meets automotive reliability stress tests including HTOL, temperature cycling, and ESD (±2 kV HBM), making it suitable for engine control, body electronics, and ADAS subsystems.
What is the thermal hysteresis specification for LM4041EIM7-1.2/NOPB?
The LM4041EIM7-1.2/NOPB exhibits 0.08% thermal hysteresis-the voltage difference measured at +25°C after cycling to −40°C versus after cycling to +125°C. This low hysteresis ensures repeatable reference performance in systems experiencing repeated thermal cycling, such as outdoor industrial controllers.
Can LM4041EIM7-1.2/NOPB be used in adjustable-output configurations?
No, LM4041EIM7-1.2/NOPB is a fixed 1.225 V version and lacks a feedback (FB) pin. Adjustable variants (e.g., LM4041AIM7-ADJ) use a 5-pin SC70 or different SOT-23 pinout with dedicated FB terminal; this part's Pin 3 is NC and must float or tie to anode-no external resistor divider is supported.
LM4041EIM7-1.2/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
LM4041EIM7-1.2/NOPB FAQ
1.How can I place an order for LM4041EIM7-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041EIM7-1.2/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 LM4041EIM7-1.2/NOPB reliable?
The price and inventory of LM4041EIM7-1.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041EIM7-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041EIM7-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041EIM7-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041EIM7-1.2/NOPB?
LM4041EIM7-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041EIM7-1.2/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 LM4041EIM7-1.2/NOPB?
For technical support, including LM4041EIM7-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041EIM7-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041EIM7-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041EIM7-1.2/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 LM4041EIM7-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041EIM7-1.2/NOPB?
All LM4041EIM7-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041EIM7-1.2/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 LM4041EIM7-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041EIM7-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041EIM7-1.2/NOPB Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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