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Texas Instruments LM4041AIM3X-1.2/NOPB
- Part No.:
- LM4041AIM3X-1.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041AIM3X-1.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,180
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Product details
Overview
LM4041AIM3X-1.2/NOPB from Texas Instruments is a precision 1.225 V shunt voltage reference in SOT-23 package, rated A-grade (±0.1% initial tolerance at 25°C), with 20 μVRMS wideband noise (10 Hz–10 kHz), 100 ppm/°C max temperature coefficient, and 60 μA to 12 mA operating current range. It serves as a stable reference for ADCs, DACs, and sensor signal conditioning in battery-powered instrumentation.
For engineers reviewing the LM4041AIM3X-1.2/NOPB datasheet, LM4041AIM3X-1.2/NOPB pinout, LM4041AIM3X-1.2/NOPB application, or LM4041AIM3X-1.2/NOPB equivalent, key selection criteria include its A-grade accuracy, automotive-qualified Grade 1 temperature range (−40°C to +125°C), no-output-capacitor requirement, and compatibility with capacitive loads in space-constrained designs.
Technical Context
The LM4041AIM3X-1.2/NOPB uses bandgap reference architecture with curvature correction and Zener-zap trimming to achieve ±0.1% initial accuracy. Its shunt topology requires an external current source and regulates output by sinking variable current through the cathode terminal.
It operates without an output capacitor and remains stable under capacitive loading up to 10 nF. The device supports industrial (−40°C to +85°C) and extended automotive Grade 1 (−40°C to +125°C) ambient ranges, with 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 resistors needed for basic operation |
| Initial Tolerance | ±0.1% at 25°C (A grade); enables high-accuracy 12-bit+ data acquisition without calibration |
| Temp Coefficient | ≤100 ppm/°C (max over −40°C to +125°C); ensures ≤±0.123 mV drift across full automotive range |
| Noise (10 Hz–10 kHz) | 20 μVRMS; low enough to avoid degrading 16-bit ADC effective resolution |
| Operating Current | 60 μA to 12 mA; ultra-low minimum enables use in micropower systems (e.g., coin-cell IoT sensors) |
| Dynamic Impedance | 0.5–1.5 Ω at 1 mA; maintains regulation stability under fast load transients |
| Long-Term Stability | 120 ppm after 1000 hrs; predictable aging behavior for 10+ year embedded deployments |
Pinout & Package
SOT-23 (DBZ) 3-pin surface-mount package: 1.30 mm × 2.92 mm body size, JEDEC MO-178AC compliant, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Main output node; sinks shunt current to maintain 1.225 V across external load/resistor |
| Anode (Pin 2) | O | Ground reference; must be connected to system ground for proper regulation |
| NC (Pin 3) | - | No-connect; must float or tie to anode per TI EMI mitigation guidance |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Eliminates BOM cost and board area for stabilization; simplifies layout in tight spaces |
| Tolerates capacitive loads | Stable with up to 10 nF directly at cathode-supports filtering without oscillation risk |
| AEC-Q100 Grade 1 qualified | Validated for −40°C to +125°C ambient; suitable for engine control, ADAS, and powertrain modules |
| Low 20 μVRMS noise | Preserves SNR in precision analog front-ends-critical for high-resolution metrology |
| 60 μA minimum operating current | Enables operation from high-impedance bias networks or energy-harvesting sources |
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 1.225 V for ADC reference input and internal calibration. Use Value: A-grade tolerance and 100 ppm/°C TC ensure measurement accuracy stays within spec across −10°C to +50°C handheld use. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision reference for 16-bit SAR ADC and programmable gain amplifier offset calibration. Use Value: 20 μVRMS noise prevents degradation of ENOB; 12 mA max current supports multiple channel references on one rail. |
| Automotive Energy Metering | Precision Audio Biasing |
Use Scenario: Onboard EV charger monitoring grid voltage and current with Class 0.5 metering compliance. IC Role / Device Role / Timing Role: Primary voltage reference for isolated sigma-delta ADC measuring AC mains. Use Value: AEC-Q100 Grade 1 qualification and 0.08% thermal hysteresis ensure long-term accuracy stability despite thermal cycling in engine bay mounting. |
Use Scenario: High-fidelity headphone amplifier requiring ultra-low-noise DC bias for op-amp rails. IC Role / Device Role / Timing Role: Low-noise shunt reference generating clean ±1.225 V virtual ground for dual-supply audio stages. Use Value: 20 μVRMS noise floor avoids audible hiss; SOT-23 footprint minimizes parasitic coupling in sensitive analog sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040AIM3-1.2/NOPB | Same A-grade 1.225 V, but non-automotive; max temp = +85°C (industrial only); no AEC-Q100 qualification | Lacks Grade 1 extended temperature validation-unsuitable for under-hood automotive use | Select when cost-sensitive industrial designs do not require automotive qualification or >+85°C operation |
| MAX6002AEUR+T | 1.225 V, ±0.1%, 25 μVRMS noise, 75 ppm/°C TC, SOT-23; no AEC-Q100 rating | Higher noise and looser TC reduce accuracy margin in high-end metrology vs. LM4041AIM3X-1.2/NOPB | Consider only if supply chain constraints prevent LM4041 sourcing; verify TC and noise impact in final design |
Compared with LM4041AIM3X-1.2/NOPB, LM4040AIM3-1.2/NOPB trades automotive qualification for lower cost in commercial environments, while MAX6002AEUR+T offers comparable accuracy but higher noise and less temperature stability-making LM4041AIM3X-1.2/NOPB the optimal choice for AEC-Q100–compliant, low-noise, high-stability applications.
Availability
LM4041AIM3X-1.2/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive energy metering, and precision data-acquisition systems requiring stable component supply with guaranteed long-term availability.
Supply support for LM4041AIM3X-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 focused on analog and embedded processing technologies, with decades of expertise in precision analog ICs and automotive-qualified components.
The LM4041-N series was designed specifically for space-constrained, high-accuracy voltage referencing in automotive, industrial, and portable equipment-emphasizing low power, no-capacitor operation, and robust thermal performance.
FAQ
What is the maximum operating temperature range for LM4041AIM3X-1.2/NOPB?
The LM4041AIM3X-1.2/NOPB is AEC-Q100 Grade 1 qualified, supporting continuous operation from −40°C to +125°C ambient temperature. This rating is verified per TI's automotive qualification protocol and applies specifically to the LM4041AIM3X-1.2/NOPB in SOT-23 packaging, making it suitable for engine control units and ADAS modules where junction temperatures may exceed +105°C.
Does LM4041AIM3X-1.2/NOPB require an output capacitor for stability?
No, the LM4041AIM3X-1.2/NOPB does not require an output capacitor. Its internal design provides inherent stability across its full operating current range (60 μA to 12 mA) and remains stable even with up to 10 nF of capacitive load at the cathode-eliminating the need for external compensation and reducing BOM count and PCB area.
What is the reverse breakdown voltage tolerance of LM4041AIM3X-1.2/NOPB at 25°C?
The LM4041AIM3X-1.2/NOPB has an initial reverse breakdown voltage tolerance of ±0.1% at 25°C (A grade), corresponding to ±1.225 mV around the nominal 1.225 V output. This tolerance is 100% production tested and guaranteed per TI's LM4041-N datasheet Section 5.5.
Can LM4041AIM3X-1.2/NOPB be used in adjustable-output configurations?
No-LM4041AIM3X-1.2/NOPB is the fixed 1.225 V version. Adjustable output requires the LM4041-N ADJ variant (e.g., LM4041CIM3-ADJ), which includes a dedicated feedback (FB) pin and supports outputs from 1.24 V to 10 V via external resistor dividers. The LM4041AIM3X-1.2/NOPB has no FB pin and is internally trimmed for 1.225 V only.
What is the typical wideband noise performance of LM4041AIM3X-1.2/NOPB?
The LM4041AIM3X-1.2/NOPB delivers 20 μVRMS wideband noise over 10 Hz to 10 kHz, measured at 100 μA operating current. This low-noise characteristic is critical for preserving signal integrity in high-resolution data converters and precision sensor interfaces where reference noise directly limits system ENOB.
LM4041AIM3X-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:
- ±0.1%
- 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
LM4041AIM3X-1.2/NOPB FAQ
1.How can I place an order for LM4041AIM3X-1.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041AIM3X-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 LM4041AIM3X-1.2/NOPB reliable?
The price and inventory of LM4041AIM3X-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 LM4041AIM3X-1.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041AIM3X-1.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041AIM3X-1.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041AIM3X-1.2/NOPB?
LM4041AIM3X-1.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041AIM3X-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 LM4041AIM3X-1.2/NOPB?
For technical support, including LM4041AIM3X-1.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041AIM3X-1.2/NOPB requirements.
6.How does Aetrix verify that LM4041AIM3X-1.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041AIM3X-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 LM4041AIM3X-1.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041AIM3X-1.2/NOPB?
All LM4041AIM3X-1.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041AIM3X-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 LM4041AIM3X-1.2/NOPB part is unused and in its original packaging.
Return procedure for LM4041AIM3X-1.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041AIM3X-1.2/NOPB Tags
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