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Texas Instruments LM4041CIM3X-ADJ/NOPB
- Part No.:
- LM4041CIM3X-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041CIM3X-ADJ/NOPB.pdf
- Description:
- IC VREF SHUNT ADJ 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:10,634
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Product details
Overview
LM4041CIM3X-ADJ/NOPB from Texas Instruments is a precision adjustable shunt voltage reference in SOT-23-3 package, delivering 1.233 V nominal reference voltage with ±0.5% initial tolerance at 25°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 output voltages from 1.24 V to 10 V in battery-powered instrumentation and data-acquisition systems.
For engineers reviewing the LM4041CIM3X-ADJ/NOPB datasheet, LM4041CIM3X-ADJ/NOPB pinout, LM4041CIM3X-ADJ/NOPB application, or LM4041CIM3X-ADJ/NOPB equivalent, key selection criteria include adjustable output range (1.24–10 V), extended temperature operation (−40°C to +125°C), low dynamic impedance (0.3 Ω typical), feedback current ≤100 nA, and AEC-Q100 Grade 1 qualification for automotive use.
Technical Context
The LM4041CIM3X-ADJ/NOPB uses a bandgap-based shunt architecture with curvature-corrected temperature drift compensation, enabling stable reverse breakdown voltage across −40°C to +125°C. Its three-terminal configuration (Anode, Cathode, FB) allows external resistor-divider programming of output voltage while maintaining low output impedance and high PSRR.
It requires no output capacitor and tolerates capacitive loads up to 10 nF, simplifying layout in space-constrained applications. The device achieves ±0.5% initial accuracy via Zener-zap trimming during wafer sort and maintains long-term stability of 120 ppm over 1000 hours.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.233 V nominal at 100 μA, enabling precise 5 V or 3.3 V regulation via external resistors |
| Initial Tolerance | ±0.5% at 25°C (C grade), corresponding to ±6.2 mV error at 5 V output |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +125°C, limiting drift to ±12.5 mV across full range at 5 V |
| Operating Current | 60 μA min / 12 mA max, supporting ultra-low-power sensor biasing and high-current DAC references |
| Noise (10 Hz–10 kHz) | 20 μVRMS, suitable for 16-bit ADCs requiring <1 LSB noise contribution at 5 V full scale |
| Dynamic Impedance | 0.3 Ω typical at 1 mA, ensuring <0.3 mV load regulation shift per 1 mA output current change |
| Feedback Current | ≤100 nA at 25°C, minimizing divider resistor-induced error and power loss |
Pinout & Package
SOT-23-3 package (1.30 mm × 2.92 mm body size) with gull-wing leads; RoHS-compliant, lead-free, and halogen-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Ground reference node | Internally connected to substrate; must be tied to system ground for proper regulation |
| Cathode (Pin 2) | Shunt current sink / output node | Carries total cathode current (IK = IIN − ILOAD) and defines regulated output voltage |
| FB (Pin 1) | Feedback input | High-impedance node sensing divided output voltage; draws ≤100 nA, enabling high-R divider networks |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output range | 1.24 V to 10 V via two-resistor divider, supporting diverse supply rail requirements |
| No output capacitor required | Stable with any capacitive load ≤10 nF, eliminating BOM cost and board area for bypass caps |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient temperatures −40°C to +125°C, including thermal cycling and HTOL |
| Low quiescent current | 60 μA minimum operating current enables multi-year operation from coin cells in IoT sensors |
| Reverse breakdown protection | Withstands up to 20 mA reverse current, preventing damage during transient overvoltage events |
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: Shunt reference providing stable 5 V reference for SAR ADC and analog front-end. Use Value: 100 ppm/°C tempco and 20 μVRMS noise ensure <0.05% measurement 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: Precision reference for 16-bit sigma-delta ADC and programmable gain amplifier. Use Value: ±0.5% initial tolerance and 120 ppm long-term stability maintain calibration integrity over 10-year field deployment. |
| Automotive Body Control Module | Energy Metering |
Use Scenario: In-vehicle cabin temperature sensor interface with CAN bus reporting. IC Role / Device Role / Timing Role: Reference for microcontroller ADC sampling thermistor voltage in harsh automotive environment. Use Value: AEC-Q100 Grade 1 qualification and −40°C to +125°C operation ensure reliable performance under hood temperature extremes. | Use Scenario: Smart electricity meter measuring RMS voltage/current with metrology-grade accuracy. IC Role / Device Role / Timing Role: Low-noise reference for metrology ADC and anti-aliasing filter calibration. Use Value: 20 μVRMS noise and <0.3 mV load regulation support Class 0.2 meter accuracy per IEC 62053-22. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBVR | Fixed 2.495 V reference; higher 2.5 mA min cathode current; 0.22 Ω typical ZOUT | Not adjustable; unsuitable for 1.24–10 V output range; requires external op-amp for precision adjustment | Select when fixed 2.5 V reference suffices and lower cost is prioritized over adjustability |
| MAX6008AEUR+T | Fixed 1.25 V output; 75 ppm/°C tempco; 15 μVRMS noise; SC70-3 package | Non-adjustable; smaller footprint but limited to single voltage; not AEC-Q100 qualified | Select for space-constrained, non-automotive applications needing lowest noise and smallest size |
Compared with TL431CDBVR and MAX6008AEUR+T, the LM4041CIM3X-ADJ/NOPB uniquely combines automotive qualification, wide adjustable output range, ultra-low minimum current (60 μA), and integrated feedback pin-enabling direct resistor-programmed regulation without external amplifiers or level-shifting circuitry.
Availability
LM4041CIM3X-ADJ/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive body control modules, and energy metering applications requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4041CIM3X-ADJ/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 component validation.
The LM4041-N series was developed to deliver high-accuracy, low-power shunt references for space-constrained and thermally demanding applications-including automotive, industrial, and portable instrumentation-where stability, noise, and qualification matter most.
FAQ
What is the maximum output voltage supported by the LM4041CIM3X-ADJ/NOPB?
The LM4041CIM3X-ADJ/NOPB supports an output voltage range of 1.24 V to 10 V, set by external resistor dividers connected to the FB pin. This upper limit is specified in the Absolute Maximum Ratings table and applies across the full operating temperature range. Exceeding 10 V risks violating the 15 V maximum output voltage rating and may cause permanent damage to the device.
Does the LM4041CIM3X-ADJ/NOPB require an external output capacitor for stability?
No, the LM4041CIM3X-ADJ/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load up to 10 nF, eliminating the need for bypass capacitors in most applications. This reduces BOM count, PCB area, and potential failure modes associated with capacitor aging or ESR variation-making the LM4041CIM3X-ADJ/NOPB ideal for compact, high-reliability designs.
What is the feedback current specification for the LM4041CIM3X-ADJ/NOPB?
The LM4041CIM3X-ADJ/NOPB has a maximum feedback current (IFB) of 100 nA at 25°C for the C grade, rising to 120 nA over the full −40°C to +125°C temperature range. This ultra-low input bias current minimizes error in high-value resistor dividers and enables power-efficient designs where divider current must remain below 1 μA-critical for battery-operated systems using the LM4041CIM3X-ADJ/NOPB.
Is the LM4041CIM3X-ADJ/NOPB qualified for automotive applications?
Yes, the LM4041CIM3X-ADJ/NOPB is AEC-Q100 Grade 1 qualified, certified for ambient operating temperatures from −40°C to +125°C. It meets stress test requirements including HTOL, TC, and HAST, and is specifically intended for automotive body electronics, infotainment, and ADAS subsystems where reliability under thermal and electrical stress is mandatory. The "-Q1" suffix in the family designation confirms this qualification.
How does the LM4041CIM3X-ADJ/NOPB achieve its low temperature coefficient?
The LM4041CIM3X-ADJ/NOPB achieves ≤100 ppm/°C temperature coefficient through bandgap reference architecture with curvature correction. Internal circuitry compensates for the parabolic drift of the base-emitter voltage (VBE) versus temperature, resulting in a near-linear output voltage vs. temperature curve. This design is validated across −40°C to +125°C and ensures predictable, repeatable performance in the LM4041CIM3X-ADJ/NOPB without external calibration.
LM4041CIM3X-ADJ/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:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.233V
- Voltage - Output (Max):
- 10 V
- 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:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041CIM3X-ADJ/NOPB FAQ
1.How can I place an order for LM4041CIM3X-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041CIM3X-ADJ/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 LM4041CIM3X-ADJ/NOPB reliable?
The price and inventory of LM4041CIM3X-ADJ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041CIM3X-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041CIM3X-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041CIM3X-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041CIM3X-ADJ/NOPB?
LM4041CIM3X-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041CIM3X-ADJ/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 LM4041CIM3X-ADJ/NOPB?
For technical support, including LM4041CIM3X-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041CIM3X-ADJ/NOPB requirements.
6.How does Aetrix verify that LM4041CIM3X-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041CIM3X-ADJ/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 LM4041CIM3X-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041CIM3X-ADJ/NOPB?
All LM4041CIM3X-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041CIM3X-ADJ/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 LM4041CIM3X-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM4041CIM3X-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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