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Texas Instruments LM4041QCEM3X-1.2NO
- Part No.:
- LM4041QCEM3X-1.2NO
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041QCEM3X-1.2NO.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,790
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Product details
Overview
LM4041QCEM3X-1.2NO from Texas Instruments is an automotive-grade precision micropower shunt voltage reference in SC70-5 package, delivering 1.225 V nominal reverse breakdown voltage with ±0.5% initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and stable operation from 60 μA to 12 mA load current. It enables accurate voltage regulation in battery-powered sensor nodes and automotive body control modules.
For engineers reviewing the LM4041QCEM3X-1.2NO datasheet, LM4041QCEM3X-1.2NO pinout, LM4041QCEM3X-1.2NO application, or LM4041QCEM3X-1.2NO equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to +125°C), no-output-capacitor requirement, low 20 μVrms noise (10 Hz–10 kHz), and compatibility with capacitive loads in space-constrained designs.
Technical Context
The LM4041QCEM3X-1.2NO uses bandgap-based curvature-corrected Zener-zap trimming to achieve tight initial accuracy and low thermal drift. Its two-terminal shunt architecture operates without external output capacitance while maintaining stability across full operating current (60 μA–12 mA) and temperature (–40°C to +125°C).
It features a fixed 1.225 V reverse breakdown voltage, low dynamic impedance (≤1.5 Ω at 1 mA), and thermal hysteresis of only 0.08%, making it suitable for high-precision analog front-ends where long-term voltage stability and minimal drift are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.225 V nominal; ensures precise biasing for ADC references and sensor excitation circuits |
| Initial Tolerance | ±0.5% at 25°C (C grade); guarantees tight system-level calibration without post-manufacture trimming |
| Temp Coefficient | ≤100 ppm/°C max; limits voltage drift to ±12.3 mV over –40°C to +125°C ambient range |
| Operating Current | 60 μA min to 12 mA max; supports ultra-low-power wake-up circuits and high-current DAC references |
| Noise (10 Hz–10 kHz) | 20 μVrms; minimizes added error in 16-bit+ data acquisition systems |
| Long-Term Stability | 120 ppm (1000 hrs); reduces recalibration frequency in industrial monitoring equipment |
| Thermal Hysteresis | 0.08%; maintains repeatability after thermal cycling in automotive under-hood applications |
Pinout & Package
LM4041QCEM3X-1.2NO is housed in a 5-pin SC70 package (1.25 mm × 2.00 mm body size) with exposed pad for thermal performance. Pin 1 = FB (feedback), Pin 2 = Anode, Pin 3 = Cathode, Pins 4–5 = NC (no connect; must float or tie to anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (FB) | Feedback input | Enables adjustable output configuration; unused in fixed 1.225 V version but must be floated or tied to anode |
| Pin 2 (Anode) | Reference ground node | Typically connected to system ground; defines shunt current return path |
| Pin 3 (Cathode) | Output voltage terminal | Delivers regulated 1.225 V; sinks shunt current and supplies reference to downstream circuitry |
| Pins 4 & 5 (NC) | No-connect terminals | Must remain unconnected or tied to anode; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for automotive applications from –40°C to +125°C ambient, supporting body electronics and ADAS sensors |
| No output capacitor required | Eliminates BOM cost and board area for stabilization; simplifies layout in compact PCBs |
| Tolerates capacitive loads | Stable with any value of output capacitance-enables direct interface with ADC sample-and-hold inputs |
| Low 20 μVrms wideband noise | Preserves SNR in precision measurement chains, especially for 24-bit delta-sigma converters |
| 60 μA minimum operating current | Enables operation in always-on wake-up circuits powered by energy harvesters or coin cells |
Applications
| Automotive Body Control Module | Portable Gas Sensor Node |
|---|---|
Use Scenario: Voltage reference for microcontroller ADC measuring door lock actuator current and cabin temperature sensor outputs. IC Role / Device Role / Timing Role: Shunt reference providing stable 1.225 V for ratiometric sensing and supply-independent measurements. Use Value: AEC-Q100 qualification ensures reliability across thermal cycles; low drift prevents calibration drift over vehicle lifetime. | Use Scenario: Powering electrochemical gas sensor bias and conditioning circuitry in handheld air quality monitors. IC Role / Device Role / Timing Role: Precision shunt reference enabling sub-ppm gas concentration resolution via low-noise analog front-end. Use Value: 20 μVrms noise and 100 ppm/°C TC allow <100 ppb CO detection accuracy without active temperature compensation. |
| Industrial Process Transmitter | Medical Wearable ECG Front-End |
Use Scenario: Reference for 4–20 mA loop-powered pressure transmitter with HART modulation capability. IC Role / Device Role / Timing Role: Fixed-voltage shunt reference supplying stable excitation to bridge sensors and reference for DAC-controlled current output. Use Value: 60 μA min operating current allows operation during low-power HART burst mode; long-term stability reduces field recalibration intervals. | Use Scenario: Reference voltage source for instrumentation amplifier and 24-bit sigma-delta ADC in single-lead ECG patch. IC Role / Device Role / Timing Role: Low-noise, micropower shunt reference ensuring baseline stability and minimizing motion artifact coupling. Use Value: SC70-5 footprint saves space on ultra-thin flex PCBs; 0.08% thermal hysteresis prevents baseline shift after skin-contact temperature transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431AQDBVRQ1 | Adjustable 1.24–18 V output; higher 80 μA min current; SOT-23-3 package | Requires external resistor divider; less suitable for fixed 1.225 V use cases | Choose when programmable output or higher voltage headroom is needed |
| MAX6008AEUR+T | Fixed 1.25 V output; ±0.2% initial accuracy; SC70-3 package; 12 μA typical quiescent current | Lower power but narrower temp range (–40°C to +85°C); not AEC-Q100 qualified | Choose for non-automotive portable devices prioritizing ultra-low IQ |
Compared with TLVH431AQDBVRQ1 and MAX6008AEUR+T, LM4041QCEM3X-1.2NO uniquely combines AEC-Q100 Grade 1 qualification, fixed 1.225 V output, SC70-5 pinout accommodating FB flexibility, and 20 μVrms noise-making it optimal for automotive and industrial systems requiring guaranteed stability across extreme temperatures without design compromises.
Availability
LM4041QCEM3X-1.2NO is available at Aetrix Electronics and suitable for automotive body control modules, portable gas sensor nodes, industrial process transmitters, and medical wearable ECG front-ends requiring stable component supply with full traceability and extended temperature support.
Supply support for LM4041QCEM3X-1.2NO 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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and automotive electronics.
The LM4041-N-Q1 product line delivers AEC-Q100-qualified shunt voltage references designed specifically for automotive and industrial applications demanding high accuracy, low power, and robust thermal performance across extended temperature ranges.
FAQ
What is the operating temperature range for LM4041QCEM3X-1.2NO?
The LM4041QCEM3X-1.2NO is qualified per AEC-Q100 Grade 1, supporting continuous operation from –40°C to +125°C ambient temperature. This rating is verified across all electrical parameters in the extended temperature range specification table, including reverse breakdown voltage tolerance, temperature coefficient, and long-term stability-ensuring reliability in automotive engine bay and industrial control environments.
Does LM4041QCEM3X-1.2NO require an external output capacitor?
No, LM4041QCEM3X-1.2NO does not require an external output capacitor. Its internal design ensures stability with any capacitive load, eliminating the need for stabilization components. This simplifies layout, reduces BOM count, and improves reliability-especially valuable in space-constrained applications like automotive ECUs and portable medical devices where LM4041QCEM3X-1.2NO is deployed.
What is the minimum operating current for LM4041QCEM3X-1.2NO?
The minimum operating current for LM4041QCEM3X-1.2NO is 60 μA at 25°C, rising to 68 μA across the full –40°C to +125°C range. This ultra-low current enables use in always-on subsystems powered by energy harvesting or coin-cell batteries, while maintaining 1.225 V output accuracy within ±0.5% initial tolerance and ≤100 ppm/°C temperature coefficient-key for LM4041QCEM3X-1.2NO's role in low-power sensing applications.
How does the pinout of LM4041QCEM3X-1.2NO differ from standard SOT-23 shunt references?
LM4041QCEM3X-1.2NO uses a 5-pin SC70 package (DCK), unlike common 3-pin SOT-23 shunt references. Pin 1 is FB (unused in fixed-voltage mode but must be floated or tied to anode), Pins 2 and 3 are Anode and Cathode, and Pins 4–5 are NC. This layout provides routing flexibility and thermal performance advantages over SOT-23, while maintaining compatibility with automated assembly-critical for high-volume LM4041QCEM3X-1.2NO deployments in automotive manufacturing.
Is LM4041QCEM3X-1.2NO compatible with capacitive loads?
Yes, LM4041QCEM3X-1.2NO is explicitly designed to tolerate any value of capacitive load without oscillation or instability. This capability is confirmed in the datasheet's "Features" and "Description" sections and validated across the full operating current (60 μA–12 mA) and temperature (–40°C to +125°C) ranges. It enables direct connection to ADC input capacitors, filter networks, and other capacitive interfaces-simplifying design for systems using LM4041QCEM3X-1.2NO as a reference source.
LM4041QCEM3X-1.2NO 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:
- ±0.5%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 68 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041QCEM3X-1.2NO FAQ
1.How can I place an order for LM4041QCEM3X-1.2NO through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041QCEM3X-1.2NO 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 LM4041QCEM3X-1.2NO reliable?
The price and inventory of LM4041QCEM3X-1.2NO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041QCEM3X-1.2NO is usually 5 days.
3.What payment methods are accepted for LM4041QCEM3X-1.2NO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041QCEM3X-1.2NO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041QCEM3X-1.2NO?
LM4041QCEM3X-1.2NO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041QCEM3X-1.2NO 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 LM4041QCEM3X-1.2NO?
For technical support, including LM4041QCEM3X-1.2NO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041QCEM3X-1.2NO requirements.
6.How does Aetrix verify that LM4041QCEM3X-1.2NO is sourced from the original manufacturer or authorized distributors?
All LM4041QCEM3X-1.2NO 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 LM4041QCEM3X-1.2NO meets industry standards.
7.What is the process for return or replacement of LM4041QCEM3X-1.2NO?
All LM4041QCEM3X-1.2NO units undergo pre-shipment inspection (PSI). If there is an issue with LM4041QCEM3X-1.2NO, 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 LM4041QCEM3X-1.2NO part is unused and in its original packaging.
Return procedure for LM4041QCEM3X-1.2NO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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