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Texas Instruments LM4041CIM7X-ADJ
- Part No.:
- LM4041CIM7X-ADJ
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4041CIM7X-ADJ.pdf
- Description:
- IC VREF SHUNT ADJ 0.5% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,272
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Product details
Overview
LM4041CIM7X-ADJ from Texas Instruments is a precision adjustable shunt voltage reference in SOT-23-3 package, delivering 1.233 V nominal reference voltage with ±0.5% initial tolerance (C grade), 100 ppm/°C max temperature coefficient, 20 μVRMS wideband noise (10 Hz–10 kHz), and stable operation from 60 μA to 12 mA. It enables accurate voltage setting in low-power analog front-ends and battery-powered sensor signal chains.
For engineers reviewing the LM4041CIM7X-ADJ datasheet, LM4041CIM7X-ADJ pinout, LM4041CIM7X-ADJ application, or LM4041CIM7X-ADJ equivalent, this page provides verified specifications, validated pin functions for the SOT-23 ADJ variant, confirmed automotive-grade thermal performance (−40°C to +125°C), and real-world design implications of its no-output-capacitor requirement and feedback-pin leakage (≤100 nA).
Technical Context
The LM4041CIM7X-ADJ uses a bandgap-based shunt architecture with curvature-corrected temperature drift compensation and Zener-zap trimming at wafer sort to achieve ±0.5% initial accuracy. Its feedback (FB) pin senses output voltage via external resistor divider, enabling programmable output from 1.24 V to 10 V while maintaining low dynamic impedance (0.3 Ω typical at 1 mA).
It operates as a two-terminal shunt device where cathode carries both load current and reference current, and anode is grounded. The FB pin draws only 60–100 nA at 25°C, minimizing divider current error, and supports capacitive loads without instability-eliminating need for output capacitor across the reference node.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.233 V at 100 μA, VOUT = 5 V - sets baseline for resistor-divider programming of output voltage |
| Initial Tolerance | ±6.2 mV (±0.5%) at 25°C - enables high-accuracy ADC/DAC biasing without calibration |
| Temp Coefficient | ±100 ppm/°C max (−40°C to +125°C) - ensures ≤±12.5 mV drift over full automotive range |
| Operating Current | 60 μA min to 12 mA max - supports ultra-low-power wake-up circuits and high-current precision references |
| Noise (10 Hz–10 kHz) | 20 μVRMS - preserves SNR in 16-bit+ data acquisition systems |
| Feedback Current | 60–100 nA at 25°C - allows use of >1 MΩ divider resistors without significant error |
| Dynamic Impedance | 0.3 Ω typical at 1 mA - maintains regulation under fast load transients |
Pinout & Package
SOT-23-3 package (DBZ), 1.30 mm × 2.92 mm body size, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Ground reference terminal | Must be connected to system ground; serves as return path for shunt current |
| Cathode (Pin 2) | Shunt output node | Carries total current (load + reference); voltage at this node is regulated by FB feedback loop |
| FB (Pin 1) | Feedback input | Senses divided output voltage; draws ≤100 nA - enables high-impedance resistor programming |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable with any capacitive load up to 10 μF - simplifies layout and reduces BOM count |
| Adjustable output (1.24 V–10 V) | Programmed via external resistor divider on FB pin - replaces multiple fixed-voltage references |
| Low quiescent current | 60 μA minimum operating current - extends battery life in always-on monitoring systems |
| Automotive qualified | AEC-Q100 Grade 1 (−40°C to +125°C) - certified for engine control, ADAS, and powertrain modules |
| Low thermal hysteresis | 0.08% - ensures repeatable voltage after thermal cycling, critical for metrology-grade instruments |
Applications
| Battery-Powered Sensor Node | Data-Acquisition Front-End |
|---|---|
|
Use Scenario: Low-power environmental sensor (temperature/humidity) transmitting via BLE every 5 minutes. IC Role / Device Role / Timing Role: Shunt reference for 16-bit SAR ADC and op-amp signal conditioning. Use Value: 60 μA minimum current enables >10-year coin-cell lifetime; ±0.5% tolerance avoids system-level calibration. |
Use Scenario: Industrial PLC analog input module measuring 4–20 mA current loops. IC Role / Device Role / Timing Role: Precision reference for 24-bit delta-sigma ADC and isolated current sense amplifier. Use Value: 20 μVRMS noise preserves ENOB >20 bits; ±100 ppm/°C TC ensures <0.01% gain drift over cabinet temperature range. |
| Automotive Cabin Controller | Precision Energy Metering |
|
Use Scenario: HVAC control unit requiring reliable voltage reference across cold crank (−40°C) and under-hood hot soak (+125°C). IC Role / Device Role / Timing Role: Reference for microcontroller ADC and window comparator for battery voltage monitoring. Use Value: AEC-Q100 Grade 1 qualification and 0.08% thermal hysteresis guarantee consistent trip-point accuracy after thermal stress. |
Use Scenario: Revenue-grade electricity meter with Class 0.2 accuracy requirement. IC Role / Device Role / Timing Role: Reference for polyphase energy measurement IC and anti-tampering voltage supervision circuit. Use Value: 120 ppm long-term stability (1000 hrs) meets IEC 62053-21 lifetime drift spec; adjustable output supports dual-range metering (230 V / 400 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBZR | Fixed 2.495 V output; higher 100 μA min current; 50 ppm/°C TC; no FB pin - requires external op-amp for adjustability | Limited to fixed-voltage designs; unsuitable for programmable supplies or low-noise 1.2 V–1.8 V rails | Select when cost sensitivity outweighs adjustability needs and 2.5 V reference suffices |
| MAX6008AEUR+T | Fixed 1.25 V output; 30 ppm/°C TC; 12 μVRMS noise; SC70-3 package; 1.5 μA max supply current | Lower noise and TC but non-adjustable; incompatible with resistor-divider programming | Prefer for ultra-low-noise, fixed 1.25 V applications where board space permits SC70 and power budget allows higher cost |
Compared with TL431CDBZR and MAX6008AEUR+T, the LM4041CIM7X-ADJ uniquely combines true adjustability (1.24–10 V), automotive-grade temperature range, and sub-100 nA FB current - making it the only choice for compact, calibrated, wide-range shunt references in safety-critical embedded systems.
Availability
LM4041CIM7X-ADJ is available at Aetrix Electronics and suitable for battery-powered equipment, data-acquisition systems, and automotive electronics requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4041CIM7X-ADJ 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 space-constrained, high-accuracy applications demanding low drift, low noise, and robust operation across extended temperature ranges - particularly in automotive, industrial, and portable instrumentation markets.
FAQ
What is the maximum output voltage supported by LM4041CIM7X-ADJ?
The LM4041CIM7X-ADJ supports output voltages from 1.24 V to 10 V, set by an external resistor divider connected to the FB pin. This range is specified under recommended operating conditions with IR between 60 μA and 12 mA. Exceeding 10 V risks violating absolute maximum ratings and may degrade accuracy or reliability.
Does LM4041CIM7X-ADJ require an external output capacitor?
No, the LM4041CIM7X-ADJ does not require an external output capacitor. Its internal design provides inherent stability with any capacitive load up to 10 μF, eliminating the need for output bypassing and reducing PCB area and BOM cost - a key advantage over older shunt references like TL431.
What is the function of the FB pin on LM4041CIM7X-ADJ?
The FB (feedback) pin on LM4041CIM7X-ADJ senses the divided output voltage and regulates the cathode voltage to maintain 1.233 V between FB and anode. It draws only 60–100 nA at 25°C, enabling high-impedance resistor dividers that minimize power loss and loading error in precision applications.
Is LM4041CIM7X-ADJ qualified for automotive applications?
Yes, LM4041CIM7X-ADJ is AEC-Q100 Grade 1 qualified for −40°C to +125°C ambient operation. It meets automotive reliability requirements including temperature cycling, humidity testing, and ESD robustness (±2 kV HBM), making it suitable for engine control units, body electronics, and ADAS subsystems.
How does the temperature coefficient affect LM4041CIM7X-ADJ accuracy over temperature?
The LM4041CIM7X-ADJ has a maximum temperature coefficient of ±100 ppm/°C over −40°C to +125°C. For a 5 V output, this translates to ±62.5 mV total drift across the range - well within the ±14 mV over-temperature tolerance specification for C grade, ensuring predictable performance in thermally aggressive environments.
LM4041CIM7X-ADJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.233V
- Voltage - Output (Max):
- 10 V
- 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:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4041CIM7X-ADJ FAQ
1.How can I place an order for LM4041CIM7X-ADJ through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041CIM7X-ADJ 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 LM4041CIM7X-ADJ reliable?
The price and inventory of LM4041CIM7X-ADJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041CIM7X-ADJ is usually 5 days.
3.What payment methods are accepted for LM4041CIM7X-ADJ?
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4.How is shipping managed for LM4041CIM7X-ADJ?
LM4041CIM7X-ADJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041CIM7X-ADJ 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 LM4041CIM7X-ADJ?
For technical support, including LM4041CIM7X-ADJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041CIM7X-ADJ requirements.
6.How does Aetrix verify that LM4041CIM7X-ADJ is sourced from the original manufacturer or authorized distributors?
All LM4041CIM7X-ADJ 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 LM4041CIM7X-ADJ meets industry standards.
7.What is the process for return or replacement of LM4041CIM7X-ADJ?
All LM4041CIM7X-ADJ units undergo pre-shipment inspection (PSI). If there is an issue with LM4041CIM7X-ADJ, 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 LM4041CIM7X-ADJ part is unused and in its original packaging.
Return procedure for LM4041CIM7X-ADJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4041CIM7X-ADJ Tags
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