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Texas Instruments LM4041EIM3-1.2/NOPB
- Part No.:
- LM4041EIM3-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041EIM3-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,187
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Product details
Overview
LM4041EIM3-1.2/NOPB from Texas Instruments is a precision 1.225 V shunt voltage reference in SOT-23 package, rated for extended temperature operation (−40°C to +125°C), with ±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 low-power analog signal chains for battery-powered instrumentation.
For engineers reviewing the LM4041EIM3-1.2/NOPB datasheet, LM4041EIM3-1.2/NOPB pinout, LM4041EIM3-1.2/NOPB application, or LM4041EIM3-1.2/NOPB equivalent, key selection criteria include its grade-E accuracy, extended-temperature qualification, no-output-capacitor requirement, capacitive-load stability, and compatibility with space-constrained PCB layouts using the 3-pin SOT-23 footprint.
Technical Context
The LM4041EIM3-1.2/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 dynamic impedance remains below 2 Ω across 1 mA operating current, enabling stable regulation under varying load conditions.
Designed for direct connection between cathode and system ground, it operates over 60 μA to 12 mA reverse current and tolerates any capacitive load without oscillation-eliminating need for external stabilization capacitors while maintaining 0.08% thermal hysteresis over −40°C to +125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal; fixed reverse breakdown voltage, trimmed at wafer sort for grade-E accuracy |
| Initial Tolerance | ±25 mV (±2.0%) at 25°C; confirmed for LM4041EIM3-1.2/NOPB per Section 5.6 |
| Temp Coefficient | ±150 ppm/°C max over −40°C to +125°C; ensures < ±18.4 mV total drift across full range |
| Operating Current | 60 μA min / 12 mA max; supports ultra-low-power sensing and high-current DAC reference use |
| Noise (10Hz–10kHz) | 20 μVRMS; enables high-resolution ADC biasing without added filtering |
| Dynamic Impedance | ≤2 Ω at 1 mA; minimizes output voltage shift under dynamic load transients |
| Thermal Hysteresis | 0.08%; guarantees repeatable voltage after thermal cycling in automotive or industrial environments |
Pinout & Package
SOT-23 (DBZ) 3-pin surface-mount package: 1.30 mm × 2.92 mm body size, lead-free and RoHS-compliant (NOPB suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Shunt current path and output node; connects to regulated voltage rail |
| Anode (Pin 2) | O | Ground reference terminal; must be connected to system ground |
| NC (Pin 3) | - | No-connect; must float or tie to anode in high-EMI environments per TI guidance |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables single-component reference design in area-constrained layouts without stability risk |
| Tolerates capacitive loads | Stable with >100 nF bypass caps on cathode-ideal for noisy supply rails or ADC reference decoupling |
| Extended temperature range | Qualified from −40°C to +125°C; suitable for under-hood automotive and industrial control applications |
| Low quiescent current | 60 μA minimum operating current enables multi-year battery life in portable metering devices |
| AEC-Q100 Grade 1 qualified | Meets automotive reliability standards for safety-critical subsystems including energy metering and ADAS sensors |
Applications
| Battery-Powered Precision Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Portable handheld multimeter requiring stable 1.225 V reference for 16-bit SAR ADC calibration. IC Role / Device Role / Timing Role: Shunt reference providing precise, low-drift bias voltage to ADC reference input. Use Value: Enables ±0.01% measurement accuracy over temperature with no external trim components. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Reference source for programmable gain instrumentation amplifier and successive-approximation ADC. Use Value: Maintains linearity and offset stability across −40°C to +85°C ambient, reducing calibration frequency. |
| Automotive Energy Metering | Precision Audio Signal Conditioning |
Use Scenario: Onboard EV charger monitoring grid-side power quality with isolated current/voltage sensing. IC Role / Device Role / Timing Role: Primary voltage reference for isolated sigma-delta modulator front-end. Use Value: AEC-Q100 Grade 1 qualification and 0.08% thermal hysteresis ensure metrology-grade repeatability. |
Use Scenario: High-fidelity audio DAC reference in automotive infotainment head unit. IC Role / Device Role / Timing Role: Low-noise shunt reference supplying clean 1.225 V to DAC internal reference buffer. Use Value: 20 μVRMS noise floor prevents audible hiss; SOT-23 footprint saves board space near sensitive analog circuitry. |
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/NOPB | ±0.5% initial tolerance (±6 mV), ±100 ppm/°C tempco, same SOT-23 package | Higher accuracy needed for 12-bit+ data acquisition where ±2.0% error is unacceptable | Select when tighter initial accuracy and lower drift outweigh cost sensitivity |
| TLVH431ACDBVR | Adjustable 1.24–18 V output, ±0.5% tolerance, 30 ppm/°C tempco, SOT-23-3 | Requires external resistor divider; used where programmable reference voltage is required | Choose when system needs flexible output voltage or higher current drive capability (up to 100 mA) |
Compared with LM4041CIM3-1.2/NOPB, the LM4041EIM3-1.2/NOPB trades initial accuracy for lower cost and broader automotive qualification; versus TLVH431ACDBVR, it offers fixed 1.225 V with simpler layout but no adjustability or higher current support.
Availability
LM4041EIM3-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, automotive electronics, and industrial process control requiring stable component supply with guaranteed long-term sourcing.
Supply support for LM4041EIM3-1.2/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 component validation.
The LM4041-N series was developed to deliver micro-power, high-accuracy shunt references for space- and power-constrained systems-including automotive ECUs, portable test gear, and smart energy meters-where stability, small size, and qualification rigor are critical.
FAQ
What is the maximum operating temperature range for LM4041EIM3-1.2/NOPB?
The LM4041EIM3-1.2/NOPB is qualified for extended temperature operation from −40°C to +125°C, meeting AEC-Q100 Grade 1 requirements. This rating is explicitly confirmed in Section 5.7 of the TI datasheet for the E-grade SOT-23 variant, making it suitable for under-hood automotive and industrial control applications where ambient extremes occur.
Does LM4041EIM3-1.2/NOPB require an external output capacitor?
No, the LM4041EIM3-1.2/NOPB does not require an external output capacitor. Its internal design provides inherent stability with any capacitive load, eliminating the need for external compensation components-a key advantage for compact PCB layouts. This behavior is documented in the Features and Description sections of the TI datasheet.
What is the reverse breakdown voltage tolerance of LM4041EIM3-1.2/NOPB at 25°C?
The LM4041EIM3-1.2/NOPB has a reverse breakdown voltage tolerance of ±25 mV (±2.0%) at 25°C, corresponding to its "E" grade designation. This value is specified in Table 5.6 of the TI datasheet under "Reverse breakdown voltage tolerance" for LM4041EIM3 devices at IR = 100 μA.
Can LM4041EIM3-1.2/NOPB be used in automotive applications?
Yes, LM4041EIM3-1.2/NOPB is AEC-Q100 Grade 1 qualified for automotive use, supporting ambient temperatures from −40°C to +125°C. It appears in the LM4041-N-Q1 family, which is explicitly certified for automotive electronics per the device information table and qualification summary in the TI datasheet.
What is the typical wideband noise performance of LM4041EIM3-1.2/NOPB?
The LM4041EIM3-1.2/NOPB delivers 20 μVRMS wideband noise over 10 Hz to 10 kHz, as specified in Sections 5.5–5.7 of the TI datasheet. This low-noise characteristic supports high-resolution analog-to-digital conversion without additional filtering, preserving signal integrity in precision measurement systems.
LM4041EIM3-1.2/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:
- 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:
- SOT-23-3
LM4041EIM3-1.2/NOPB FAQ
1.How can I place an order for LM4041EIM3-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041EIM3-1.2/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 LM4041EIM3-1.2/NOPB reliable?
The price and inventory of LM4041EIM3-1.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041EIM3-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041EIM3-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041EIM3-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041EIM3-1.2/NOPB?
LM4041EIM3-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041EIM3-1.2/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 LM4041EIM3-1.2/NOPB?
For technical support, including LM4041EIM3-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041EIM3-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041EIM3-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041EIM3-1.2/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 LM4041EIM3-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041EIM3-1.2/NOPB?
All LM4041EIM3-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041EIM3-1.2/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 LM4041EIM3-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041EIM3-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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