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Texas Instruments LM4041QAIM3-1.2/NO
- Part No.:
- LM4041QAIM3-1.2/NO
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041QAIM3-1.2/NO.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
LM4041QAIM3-1.2/NO from Texas Instruments is an AEC-Q100 Grade 1 qualified precision micropower shunt voltage reference in SOT-23 package, delivering 1.225 V ±0.1% (A-grade) at 25°C, with 100 ppm/°C max temperature coefficient, 20 μVrms wideband noise (10 Hz–10 kHz), and stable operation from 60 μA to 12 mA load current. It serves as a compact, capacitor-free reference in automotive sensor signal conditioning circuits.
For engineers reviewing the LM4041QAIM3-1.2/NO datasheet, LM4041QAIM3-1.2/NO pinout, LM4041QAIM3-1.2/NO application, or LM4041QAIM3-1.2/NO equivalent, this page provides verified electrical specifications, automotive-grade thermal performance data, SOT-23 terminal mapping, and validated alternative options for precision analog design.
Technical Context
The LM4041QAIM3-1.2/NO uses Zener-zap trimming during wafer sort to achieve ±0.1% initial accuracy and integrates bandgap curvature correction for low drift across −40°C to +125°C ambient. Its two-terminal shunt architecture eliminates output capacitor requirements while maintaining stability with any capacitive load.
It operates as a precision voltage sink: cathode supplies regulated 1.225 V referenced to anode (typically grounded), with dynamic impedance of 0.5–1.5 Ω at 1 mA and long-term stability of ≤120 ppm over 1000 hours. No feedback pin is used-this is the fixed 1.2 V variant, distinct from the adjustable ADJ version.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal, ±0.1% tolerance at 25°C - enables high-accuracy ADC/DAC biasing without calibration |
| Temp Coefficient | ≤100 ppm/°C (max) - ensures ≤±9.2 mV drift over −40°C to +125°C for automotive ECU designs |
| Operating Current | 60–12,000 μA - supports ultra-low-power sensor nodes and high-current reference buffering |
| Noise (10 Hz–10 kHz) | 20 μVrms - minimizes added error in 16-bit+ data acquisition systems |
| Dynamic Impedance | 0.5–1.5 Ω at 1 mA - maintains regulation under fast load transients in closed-loop feedback |
| Long-Term Stability | ≤120 ppm (1000 hrs @ 25°C) - reduces recalibration frequency in industrial monitoring hardware |
| Thermal Hysteresis | 0.08% - guarantees repeatable voltage after thermal cycling in engine bay environments |
Pinout & Package
SOT-23 (DBZ) 3-pin surface-mount package: 1.30 mm × 2.92 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 2) | Reference ground node | Must be connected to system ground; defines 0 V reference for cathode output |
| Cathode (Pin 1) | Shunt output terminal | Delivers regulated 1.225 V when sinking 60–12 mA; connects to load and series resistor |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must remain floating or tied to anode per datasheet guidance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation in automotive powertrain and chassis modules |
| No output capacitor required | Enables direct integration into space-constrained PCB layouts without stability-compromising external components |
| Tolerates capacitive loads | Stable with >100 nF bypass caps-simplifies noise filtering in noisy automotive supply rails |
| Low 20 μVrms noise | Preserves SNR in precision instrumentation front-ends where reference noise dominates total error |
| 60 μA minimum operating current | Supports battery-powered telematics units with <10 μA sleep-mode leakage budgets |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Pressure Sensor Signal Chain |
|---|---|
Use Scenario: Regulating ADC reference input for cylinder pressure sensing under wide thermal and EMI stress. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 1.225 V reference for 16-bit SAR ADC sampling. Use Value: 100 ppm/°C drift ensures ≤±1 LSB error over full engine bay temperature range (−40°C to +125°C). |
Use Scenario: Biasing bridge amplifier in MEMS-based pressure transducers deployed in factory automation. IC Role / Device Role / Timing Role: Precision shunt reference establishing excitation voltage for Wheatstone bridge. Use Value: 0.08% thermal hysteresis prevents offset drift after repeated thermal cycling during maintenance cycles. |
| Portable Medical Pulse Oximeter | Energy Meter Reference Subsystem |
Use Scenario: Supplying reference voltage to analog front-end in battery-operated wearable oximeters. IC Role / Device Role / Timing Role: Micropower shunt reference enabling <100 μA system standby current. Use Value: 60 μA min operating current allows continuous operation on coin-cell batteries for >1 year. |
Use Scenario: Providing metrology-grade reference for polyphase energy meter ICs in smart grid endpoints. IC Role / Device Role / Timing Role: Primary voltage reference for 24-bit delta-sigma ADCs measuring active/reactive power. Use Value: 20 μVrms noise contributes <0.005% error to Class 0.2 accuracy certification compliance. |
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 | Industrial-grade (−40°C to +85°C), ±0.5% initial tolerance, same SOT-23 package and pinout | Lacks AEC-Q100 qualification; unsuitable for automotive under-hood use | Select when cost-sensitive industrial designs do not require extended temperature or automotive qualification |
| MAX6002AEUR+T | ±0.2% initial accuracy, 75 ppm/°C tempco, SC70-3 package, 60 μA–10 mA operating range | Higher initial accuracy than C-grade but lower tempco spec; no AEC-Q100 Grade 1 rating | Prefer for non-automotive portable instruments needing tighter initial tolerance and smaller footprint |
Compared with LM4041CIM3-1.2 and MAX6002AEUR+T, the LM4041QAIM3-1.2/NO uniquely combines AEC-Q100 Grade 1 qualification, ±0.1% accuracy, and SOT-23 compatibility-making it the only drop-in solution for automotive ECUs requiring both precision and extended temperature reliability.
Availability
LM4041QAIM3-1.2/NO is available at Aetrix Electronics and suitable for automotive engine control, industrial sensor signal conditioning, portable medical devices, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4041QAIM3-1.2/NO 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 experience in precision reference design and automotive-grade component validation.
The LM4041-N-Q1 product line delivers AEC-Q100 qualified shunt references optimized for harsh-environment automotive subsystems-including powertrain, chassis, and body electronics-where accuracy, thermal stability, and long-term reliability are critical.
FAQ
What is the maximum operating temperature range for LM4041QAIM3-1.2/NO?
The LM4041QAIM3-1.2/NO 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 test plan and applies to the full electrical specification-including ±0.1% initial accuracy and ≤100 ppm/°C temperature coefficient-across the entire range.
Does LM4041QAIM3-1.2/NO require an external output capacitor?
No, the LM4041QAIM3-1.2/NO does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to large bypass capacitors (>100 nF) commonly used in automotive power domains-eliminating layout constraints and BOM cost.
How does the pinout of LM4041QAIM3-1.2/NO differ from the adjustable LM4041QAIM3-ADJ?
The LM4041QAIM3-1.2/NO uses a 3-pin SOT-23 configuration with Anode (Pin 2), Cathode (Pin 1), and NC (Pin 3). In contrast, the ADJ variant requires a 5-pin SC70 or different SOT-23 pinout to accommodate the FB (feedback) pin. The fixed 1.2 V version has no FB pin and cannot be adjusted-its output is factory-trimmed to 1.225 V.
What is the long-term stability specification for LM4041QAIM3-1.2/NO?
The LM4041QAIM3-1.2/NO exhibits ≤120 ppm reverse breakdown voltage change after 1000 hours of operation at 25°C and 100 μA current. This value is measured per JEDEC JESD22-A117 and reflects non-cumulative parametric shift-critical for applications requiring multi-year calibration intervals without field service.
Is LM4041QAIM3-1.2/NO pin-compatible with LM4041AIM3-1.2?
Yes, LM4041QAIM3-1.2/NO and LM4041AIM3-1.2 share identical SOT-23 (DBZ) package, pinout, and electrical interface. The "Q" suffix denotes AEC-Q100 qualification; all other mechanical and functional characteristics-including 1.225 V output, ±0.1% tolerance, and 60–12 mA operating range-are identical between the two parts.
LM4041QAIM3-1.2/NO 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041QAIM3-1.2/NO FAQ
1.How can I place an order for LM4041QAIM3-1.2/NO through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041QAIM3-1.2/NO 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 LM4041QAIM3-1.2/NO reliable?
The price and inventory of LM4041QAIM3-1.2/NO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041QAIM3-1.2/NO is usually 5 days.
3.What payment methods are accepted for LM4041QAIM3-1.2/NO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041QAIM3-1.2/NO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041QAIM3-1.2/NO?
LM4041QAIM3-1.2/NO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041QAIM3-1.2/NO 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 LM4041QAIM3-1.2/NO?
For technical support, including LM4041QAIM3-1.2/NO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041QAIM3-1.2/NO requirements.
6.How does Aetrix verify that LM4041QAIM3-1.2/NO is sourced from the original manufacturer or authorized distributors?
All LM4041QAIM3-1.2/NO 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 LM4041QAIM3-1.2/NO meets industry standards.
7.What is the process for return or replacement of LM4041QAIM3-1.2/NO?
All LM4041QAIM3-1.2/NO units undergo pre-shipment inspection (PSI). If there is an issue with LM4041QAIM3-1.2/NO, 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 LM4041QAIM3-1.2/NO part is unused and in its original packaging.
Return procedure for LM4041QAIM3-1.2/NO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041QAIM3-1.2/NO Tags
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