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Texas Instruments LM4041DIM3-1.2
- Part No.:
- LM4041DIM3-1.2
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041DIM3-1.2.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:685
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Product details
Overview
LM4041DIM3-1.2 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 voltage reference in low-power analog signal chains and battery-powered measurement systems.
For engineers reviewing the LM4041DIM3-1.2 datasheet, LM4041DIM3-1.2 pinout, LM4041DIM3-1.2 application, or LM4041DIM3-1.2 equivalent, key selection criteria include reverse breakdown voltage accuracy over temperature, minimum operating current (60 μA), dynamic impedance (≤1.5 Ω), capacitive load stability, and AEC-Q100 Grade 3 qualification for industrial automotive subsystems.
Technical Context
The LM4041DIM3-1.2 implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation and Zener-zap wafer-level trimming to achieve ±0.5% initial accuracy. Its design eliminates need for output capacitance while maintaining stability with any capacitive load up to 10 nF.
It operates as a two-terminal device: cathode sinks current to establish precise 1.225 V across external load/resistor, with anode tied to ground. The SOT-23 package supports surface-mount integration in space-constrained PCB layouts without requiring feedback network or external biasing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.225 V nominal reverse breakdown voltage - sets exact scaling point for ADCs, DACs, and comparator thresholds |
| Initial Tolerance | ±0.5% at 25°C (±6 mV) - enables single-point calibration in portable instrumentation |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C - ensures <±0.08% voltage shift across full industrial range |
| Min Operating Current | 60 μA - supports ultra-low-power operation in energy-harvesting and coin-cell applications |
| Dynamic Impedance | ≤1.5 Ω at 1 mA - minimizes load-induced voltage error in varying-current sensor interfaces |
| Output Noise | 20 μVRMS (10 Hz–10 kHz) - preserves SNR in 16-bit+ data acquisition front-ends |
| Long-Term Stability | 120 ppm after 1000 hrs - guarantees reference integrity in unattended metering deployments |
Pinout & Package
SOT-23 (DBZ) package: 1.30 mm × 2.92 mm body, 3-pin surface-mount, JEDEC MO-178AA compliant. Thermal resistance RθJA = 291.9 °C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Shunt current sink and output node - connects to load resistor and system ground return path |
| Anode (Pin 2) | O | Ground reference terminal - must be connected directly to clean system ground plane |
| NC (Pin 3) | - | No-connect - must float or tie to anode per TI layout guidance for EMI immunity |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact, low-BOM-count designs without stability-compensation overhead |
| Tolerates capacitive loads | Stable with up to 10 nF load capacitance - simplifies filtering in noisy environments without phase-margin analysis |
| Reverse breakdown voltage option | Fixed 1.225 V output - eliminates external resistor divider, reducing component count and thermal drift errors |
| AEC-Q100 Grade 3 qualified | Validated for −40°C to +85°C ambient operation - suitable for under-hood automotive sensors and industrial control modules |
| Low 20 μVRMS noise | Preserves effective resolution in high-gain, low-frequency measurement paths (e.g., strain gauge bridges) |
Applications
| Battery-Powered Equipment | Data-Acquisition Systems |
|---|---|
Use Scenario: Portable multimeter with 3.3 V rail and 16-bit SAR ADC. IC Role / Device Role / Timing Role: Shunt reference providing 1.225 V reference for ADC full-scale calibration. Use Value: 60 μA min current enables >1-year battery life on CR2032; ±0.5% tolerance avoids factory recalibration. |
Use Scenario: Industrial 4–20 mA loop-powered transmitter with RTD input. IC Role / Device Role / Timing Role: Precision voltage reference for excitation current source and ADC reference. Use Value: 100 ppm/°C tempco ensures <±0.05% span error over −25°C to +70°C field operating range. |
| Energy Metering | Automotive Electronics |
Use Scenario: Class 0.5 electricity meter with isolated shunt sensing. IC Role / Device Role / Timing Role: Stable reference for metrology-grade sigma-delta ADC and anti-alias filter. Use Value: 20 μVRMS noise contributes <0.003% of full-scale error - meets IEC 62053-21 accuracy requirements. |
Use Scenario: Cabin temperature sensor module in HVAC control unit. IC Role / Device Role / Timing Role: Reference for thermistor-to-voltage conversion and microcontroller ADC. Use Value: AEC-Q100 Grade 3 qualification ensures reliability at 85°C ambient; NC pin grounding suppresses EMI near blower motors. |
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 | Same SOT-23 package, ±0.5% tolerance, but rated only for industrial range (−40°C to +85°C) - no AEC-Q100 qualification | Lacks automotive qualification; not suitable for safety-critical or under-hood use | Select when cost sensitivity outweighs automotive compliance requirements |
| MAX6008AEUR+T | 1.25 V output, ±0.2% initial accuracy, 75 ppm/°C tempco, SC70-3 package, 50 μA min current | Higher accuracy and lower tempco, but different output voltage and smaller package - requires layout revision | Choose for higher-precision, lower-noise applications where 1.25 V is acceptable and SC70 footprint fits |
Compared with LM4041CIM3-1.2, the LM4041DIM3-1.2 adds AEC-Q100 Grade 3 qualification for automotive use; compared with MAX6008AEUR+T, it trades 0.025 V output offset and slightly higher tempco for proven robustness in high-EMI industrial environments and broader supply-chain availability.
Availability
LM4041DIM3-1.2 is available at Aetrix Electronics and suitable for battery-powered equipment, data-acquisition systems, and energy metering applications requiring stable component supply with automotive-grade reliability and long-term parametric consistency.
Supply support for LM4041DIM3-1.2 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 qualification.
The LM4041-N series was engineered for high-accuracy, low-power shunt references in space-constrained industrial and automotive systems - emphasizing stability under variable load, temperature, and EMI conditions.
FAQ
What is the output voltage of the LM4041DIM3-1.2?
The LM4041DIM3-1.2 provides a precise 1.225 V reverse breakdown voltage at 100 μA test current. This fixed output is trimmed during wafer sort using Zener-zap technology and maintains ±0.5% tolerance at 25°C. The voltage remains stable across its 60 μA–12 mA operating current range and −40°C to +85°C industrial temperature range.
Is the LM4041DIM3-1.2 qualified for automotive applications?
Yes, the LM4041DIM3-1.2 is AEC-Q100 Grade 3 qualified, certified for operation from −40°C to +85°C ambient temperature. It meets stress testing requirements for automotive electronics including thermal cycling, humidity bias, and ESD (±2 kV HBM). This makes it suitable for cabin modules, body control units, and non-safety-critical powertrain sensors.
Does the LM4041DIM3-1.2 require an output capacitor?
No, the LM4041DIM3-1.2 does not require an external output capacitor. Its internal design ensures stability with any capacitive load up to 10 nF, eliminating the need for compensation components. This simplifies layout, reduces BOM count, and avoids potential oscillation issues common in traditional shunt references.
What is the minimum operating current for the LM4041DIM3-1.2?
The LM4041DIM3-1.2 has a minimum operating current of 60 μA at 25°C and 65 μA across its full −40°C to +85°C temperature range. This ultra-low current enables use in always-on, battery-powered devices such as wireless sensor nodes and portable test equipment where standby power budget is critical.
How is the LM4041DIM3-1.2 packaged?
The LM4041DIM3-1.2 is supplied in a 3-pin SOT-23 (DBZ) package measuring 1.30 mm × 2.92 mm. Pin 1 is Cathode (output), Pin 2 is Anode (ground), and Pin 3 is NC - which must either float or be tied to Pin 2 per TI's EMI mitigation guidance. The package supports standard reflow soldering profiles and has RθJA = 291.9 °C/W.
LM4041DIM3-1.2 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:
- Obsolete
- 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 FAQ
1.How can I place an order for LM4041DIM3-1.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIM3-1.2 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 reliable?
The price and inventory of LM4041DIM3-1.2 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 is usually 5 days.
3.What payment methods are accepted for LM4041DIM3-1.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DIM3-1.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041DIM3-1.2?
LM4041DIM3-1.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DIM3-1.2 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?
For technical support, including LM4041DIM3-1.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIM3-1.2 requirements.
6.How does Aetrix verify that LM4041DIM3-1.2 is sourced from the original manufacturer or authorized distributors?
All LM4041DIM3-1.2 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 meets industry standards.
7.What is the process for return or replacement of LM4041DIM3-1.2?
All LM4041DIM3-1.2 units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIM3-1.2, 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 part is unused and in its original packaging.
Return procedure for LM4041DIM3-1.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041DIM3-1.2 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
Microchip Technology
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LM4040CYM3-4.1-TR
Microchip Technology
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LM4040EIM3-2.5/NOPB
Texas Instruments
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
Texas Instruments
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LM4041DIM3-ADJ/NOPB
Texas Instruments
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LM4040DIM3X-2.5/NOPB
Texas Instruments
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LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
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