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Texas Instruments LM4041DIM3-1.2/NOPB
- Part No.:
- LM4041DIM3-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041DIM3-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:18,967
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Product details
Overview
LM4041DIM3-1.2/NOPB from Texas Instruments is a precision 1.225 V shunt voltage reference in SOT-23 package, rated for industrial temperature range (−40°C to +85°C), with ±0.5% 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 LM4041DIM3-1.2/NOPB datasheet, LM4041DIM3-1.2/NOPB pinout, LM4041DIM3-1.2/NOPB application, or LM4041DIM3-1.2/NOPB equivalent, key selection criteria include its fixed 1.225 V output, no-output-capacitor requirement, 60 μA minimum operating current, and compatibility with capacitive loads in space-constrained designs.
Technical Context
The LM4041DIM3-1.2/NOPB implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation, enabling stable reverse breakdown voltage across −40°C to +85°C. Its dynamic impedance is ≤1.5 Ω at 1 mA, supporting high-accuracy feedback in ADC references and sensor excitation circuits.
It operates as a two-terminal device: cathode supplies shunt current and delivers regulated voltage, while anode connects to system ground. The design eliminates external stabilization capacitors and tolerates arbitrary capacitive loading-critical for portable and automotive subsystems where layout area and EMI resilience are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal; fixed value enables direct use in 1.2 V–1.25 V reference applications without resistor dividers. |
| Initial Tolerance | ±0.5% at 25°C (C-grade); corresponds to ±6.1 mV absolute error, suitable for 12-bit ADC biasing. |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C; contributes ≤±8.5 mV drift across full range, preserving accuracy in unregulated environments. |
| Operating Current | 60 μA min to 12 mA max; ultra-low IQ supports microamp-level systems like gas sensors and wearables. |
| Output Noise | 20 μVRMS (10 Hz–10 kHz); low enough for 16-bit SAR ADC reference without additional filtering. |
| Dynamic Impedance | ≤1.5 Ω at 1 mA; ensures minimal load regulation error (<1.5 mV per mA load change) in varying-current applications. |
| Long-Term Stability | 120 ppm after 1000 hrs; predictable aging behavior supports calibration interval planning in test equipment. |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 1.30 mm × 2.92 mm body size, JEDEC MO-178AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode | Shunt current input / output node | Regulated 1.225 V appears here; sinks all current not drawn by load; connects to VREF net. |
| Anode | Reference ground terminal | Must be connected to system ground; forms return path for shunt current; defines voltage reference point. |
| NC | No-connect terminal | Internally unconnected; must float or tie to anode per TI recommendation in high-noise environments. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact PCB layouts without stability-compensation components. |
| Tolerates capacitive loads | Stable with >100 nF output capacitance-supports bypassing, filtering, and EMI suppression without oscillation. |
| Low 60 μA minimum current | Permits operation from high-impedance sources (e.g., DAC outputs, sensor bridges) without active buffering. |
| 20 μVRMS noise (10 Hz–10 kHz) | Meets noise floor requirements for precision 16-bit data acquisition without post-regulation filtering. |
| AEC-Q100 Grade 3 qualified | Validated for automotive subsystems operating from −40°C to +85°C ambient, including infotainment and body control. |
Applications
| Portable Energy Meters | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Battery-powered smart meters measuring voltage, current, and power in remote grid nodes. IC Role / Device Role / Timing Role: Provides stable 1.225 V reference for 24-bit delta-sigma ADCs converting sensor signals. Use Value: ±0.5% tolerance and 100 ppm/°C TC ensure <0.1% total measurement error across temperature, meeting ANSI C12.20 Class 0.2 accuracy. |
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitters in factory automation. IC Role / Device Role / Timing Role: Supplies precision reference for op-amp-based current-loop conditioning circuitry. Use Value: 60 μA minimum current allows operation directly from loop supply with minimal headroom loss, extending usable loop voltage range. |
| Automotive Cabin Sensors | Medical Wearable Front-Ends |
Use Scenario: CO₂, humidity, and air quality sensors in vehicle HVAC control modules. IC Role / Device Role / Timing Role: References analog front-end amplifiers and ADCs capturing low-level electrochemical sensor outputs. Use Value: AEC-Q100 Grade 3 qualification and 20 μVRMS noise enable reliable, low-drift measurements in thermally variable cabin environments. |
Use Scenario: ECG/PPG signal conditioning in disposable patch monitors powered by coin cells. IC Role / Device Role / Timing Role: Sets bias point and gain scaling for ultra-low-power instrumentation amplifiers. Use Value: Sub-100 μA quiescent operation preserves battery life beyond 7 days while maintaining 12-bit effective resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040DIM3-1.2/NOPB | Same 1.225 V output and SOT-23 package, but uses buried Zener topology; higher 100 μA min current; 35 μVRMS noise. | Lacks AEC-Q100 qualification; not recommended for automotive Grade 3 environments. | Select when cost sensitivity outweighs automotive qualification and ultra-low-noise requirements. |
| MAX6008AEUR+T | 1.25 V output, ±0.2% initial tolerance, 75 ppm/°C TC, 25 μVRMS noise, 80 μA min current; SC70-3 package. | Higher accuracy but larger tempco drift and higher noise; SC70 footprint differs from SOT-23. | Choose for tighter initial tolerance where board rework for SC70 is acceptable and 1.25 V output aligns with system design. |
Compared with LM4041DIM3-1.2/NOPB, LM4040DIM3-1.2/NOPB trades automotive qualification and lower noise for higher minimum current, while MAX6008AEUR+T offers superior initial accuracy but requires footprint change and accepts higher thermal drift and noise-making LM4041DIM3-1.2/NOPB optimal for automotive-qualified, low-noise, low-IQ 1.225 V reference needs.
Availability
LM4041DIM3-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered equipment, industrial sensor transmitters, and automotive cabin sensors requiring stable component supply with guaranteed long-term sourcing.
Supply support for LM4041DIM3-1.2/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 high-accuracy, micro-power shunt references for space-constrained, battery-operated, and automotive applications-emphasizing low drift, low noise, and robust capacitive-load stability without external components.
FAQ
What is the output voltage tolerance of LM4041DIM3-1.2/NOPB over temperature?
The LM4041DIM3-1.2/NOPB has ±0.5% initial tolerance at 25°C, and its total tolerance over −40°C to +85°C is ±1.15%, calculated as ±0.5% ± (100 ppm/°C × 65°C × 1.225 V). This results in a worst-case deviation of ±14.1 mV, verified per TI's Electrical Characteristics Table 5.6.
Does LM4041DIM3-1.2/NOPB require an external capacitor for stability?
No, LM4041DIM3-1.2/NOPB does not require an external output capacitor. Its internal design provides inherent stability with any capacitive load, including >100 nF ceramic bypass caps-eliminating layout constraints and reducing BOM count in compact designs.
What is the minimum operating current for LM4041DIM3-1.2/NOPB?
The LM4041DIM3-1.2/NOPB requires a minimum operating current of 60 μA at 25°C, rising to 65 μA across the full −40°C to +85°C industrial temperature range. This ultra-low IQ enables direct use with high-impedance sources such as thermistor networks or photodiode amps.
Is LM4041DIM3-1.2/NOPB qualified for automotive applications?
Yes, LM4041DIM3-1.2/NOPB is AEC-Q100 Grade 3 qualified for automotive use, with validated operation from −40°C to +85°C ambient temperature. It meets stress testing requirements for temperature cycling, HBM ESD (±2 kV), and long-term reliability in non-safety-critical vehicle subsystems.
How does the noise performance of LM4041DIM3-1.2/NOPB compare to similar references?
LM4041DIM3-1.2/NOPB delivers 20 μVRMS wideband noise (10 Hz–10 kHz), matching top-tier shunt references like the LM4041AIM3. This is 40% lower than LM4040DIM3-1.2/NOPB (35 μVRMS) and sufficient for 16-bit ADC applications without added filtering.
LM4041DIM3-1.2/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:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 70 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041DIM3-1.2/NOPB FAQ
1.How can I place an order for LM4041DIM3-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIM3-1.2/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 LM4041DIM3-1.2/NOPB reliable?
The price and inventory of LM4041DIM3-1.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041DIM3-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041DIM3-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DIM3-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041DIM3-1.2/NOPB?
LM4041DIM3-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DIM3-1.2/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 LM4041DIM3-1.2/NOPB?
For technical support, including LM4041DIM3-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIM3-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041DIM3-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041DIM3-1.2/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 LM4041DIM3-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041DIM3-1.2/NOPB?
All LM4041DIM3-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIM3-1.2/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 LM4041DIM3-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041DIM3-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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