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Texas Instruments LM4041DEM3X-ADJ/NOPB
- Part No.:
- LM4041DEM3X-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041DEM3X-ADJ/NOPB.pdf
- Description:
- IC VREF SHUNT ADJ 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,408
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Product details
Overview
LM4041DEM3X-ADJ/NOPB 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 serves as a compact, low-drift voltage setpoint in battery-powered instrumentation and automotive sensor signal conditioning circuits.
For engineers reviewing the LM4041DEM3X-ADJ/NOPB datasheet, LM4041DEM3X-ADJ/NOPB pinout, LM4041DEM3X-ADJ/NOPB application, or LM4041DEM3X-ADJ/NOPB equivalent, key selection criteria include its extended temperature range (−40°C to +125°C), no-output-capacitor requirement, feedback-pin input current of ≤100 nA at 25°C, and compatibility with adjustable output configurations up to 10 V using external resistive dividers.
Technical Context
The LM4041DEM3X-ADJ/NOPB implements a bandgap-based shunt reference architecture with curvature-corrected temperature drift compensation and Zener-zap wafer-level trimming for tight initial accuracy. Its three-terminal configuration (Anode, Cathode, FB) enables programmable output via external resistor networks while maintaining low dynamic impedance (≤0.3 Ω typical at 1 mA).
It operates without an output capacitor and tolerates capacitive loads-enabling direct use in ADC reference buffers and DAC feedback loops. The FB pin draws only 60–100 nA, minimizing divider current error, and supports output voltages from 1.24 V to 10 V across its full operating current range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.233 V nominal at 100 μA, enabling precise 5 V or 3.3 V scaling with standard resistor ratios |
| Initial Tolerance | ±0.5% (C grade) at 25°C - ensures ≤±6.2 mV absolute error for 5 V outputs before trimming |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +125°C - contributes ≤±12.4 mV drift across full range for 5 V outputs |
| Operating Current | 60 μA min / 12 mA max - supports ultra-low-power sensor nodes and high-current reference buffering |
| Noise (10 Hz–10 kHz) | 20 μVRMS - suitable for 16-bit+ data acquisition systems without additional filtering |
| Feedback Current | 60–100 nA at 25°C - permits high-value resistor dividers (>1 MΩ) to minimize power loss and loading |
| Dynamic Impedance | 0.3 Ω typical at 1 mA - maintains regulation stability under fast load transients in closed-loop designs |
Pinout & Package
SOT-23-3 package (DBZ), body size 1.30 mm × 2.92 mm, with gull-wing leads and thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Ground reference node | Must be connected to system ground; floating or misconnected anode disables regulation |
| Cathode (Pin 2) | Shunt current sink & output node | Provides regulated voltage to external circuit; sinks all excess current from divider network |
| FB (Pin 1) | Feedback input | High-impedance input sensing output voltage; sets cathode voltage via external resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables space-constrained PCB layouts and eliminates capacitor aging/reliability concerns in long-life systems |
| Tolerates capacitive loads | Stable with >100 nF output capacitance - simplifies EMI filtering and bypassing without phase-compensation redesign |
| Adjustable output (1.24 V to 10 V) | Supports single-reference IC across multiple supply rails and ADC/DAC full-scale ranges via resistor selection |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient temperatures (−40°C to +125°C), including engine control and ADAS sensor modules |
| Low 20 μVRMS noise | Meets SNR requirements for 16-bit SAR ADCs without external low-noise op-amp buffering |
Applications
| Battery-Powered Instrumentation | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Portable multimeter measuring DC voltage with 0.1% accuracy over 0–10 V range. IC Role / Device Role / Timing Role: Adjustable shunt reference setting precise 5 V full-scale for internal 24-bit sigma-delta ADC. Use Value: Enables single-supply 3.3 V microcontroller to achieve calibrated 0.1% measurement accuracy without trimming or calibration tables. |
Use Scenario: Engine coolant temperature sensor interface in Tier-1 powertrain module. IC Role / Device Role / Timing Role: Stable 2.5 V reference for ratiometric RTD bridge excitation and 12-bit ADC conversion. Use Value: Maintains <±0.5°C temperature accuracy across −40°C to +125°C ambient, meeting AEC-Q100 Grade 1 requirements. |
| Energy Metering Front-End | Industrial Process Controller Analog Input |
|
Use Scenario: Class 0.5 kWh meter measuring line voltage and current with metrology-grade ADC. IC Role / Device Role / Timing Role: Low-noise 1.233 V reference for anti-aliasing filter and ADC reference buffer stage. Use Value: Contributes <1 LSB error at 24-bit resolution; long-term stability (120 ppm/1000 hrs) reduces recalibration frequency. |
Use Scenario: 4–20 mA loop-powered transmitter with HART modulation and local analog inputs. IC Role / Device Role / Timing Role: Programmable 3.0 V reference for precision op-amp gain-setting and ADC biasing. Use Value: Allows single BOM variant to support multiple input ranges (±10 V, 0–5 V, 0–10 V) via software-configurable resistor networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBVR | Fixed 2.495 V reference; higher 0.5% initial tolerance; 500 ppm/°C tempco; requires external cathode resistor | Lacks adjustability; unsuitable for sub-2.5 V or >5 V outputs; higher noise (40 μVRMS) limits 16-bit+ use | Select when cost sensitivity outweighs precision needs and output voltage is fixed near 2.5 V |
| MAX6008AEUR+T | Fixed 1.25 V output; ±0.2% initial tolerance; 75 ppm/°C tempco; SC70-3 package; 15 μVRMS noise | Not adjustable; smaller SC70 footprint but lower max current (10 mA); no AEC-Q100 qualification | Choose for ultra-low-noise, space-constrained industrial sensors where 1.25 V is acceptable and automotive qualification is unnecessary |
Compared with TL431CDBVR and MAX6008AEUR+T, the LM4041DEM3X-ADJ/NOPB uniquely combines automotive qualification, true adjustability down to 1.24 V, and sub-100 ppm/°C drift in a widely available SOT-23 package-making it optimal for calibrated, multi-range, and safety-critical embedded systems.
Availability
LM4041DEM3X-ADJ/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor interfaces, energy metering front-ends, and industrial process controllers requiring stable component supply across extended temperature ranges.
Supply support for LM4041DEM3X-ADJ/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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs and automotive-grade components.
The LM4041-N series was designed specifically for space-constrained, high-accuracy voltage referencing in portable, industrial, and automotive systems-emphasizing low quiescent current, no-capacitor operation, and robust thermal performance.
FAQ
What is the maximum output voltage supported by the LM4041DEM3X-ADJ/NOPB?
The LM4041DEM3X-ADJ/NOPB supports output voltages from 1.24 V up to 10 V when configured with an external resistor divider on the FB pin. This range is explicitly specified in Section 5.8 of the datasheet for industrial and extended temperature operation, and the device maintains regulation stability across this full span at currents from 60 μA to 12 mA.
Does the LM4041DEM3X-ADJ/NOPB require an output capacitor for stability?
No, the LM4041DEM3X-ADJ/NOPB does not require an output capacitor for stability. Its internal design eliminates the need for external stabilization capacitance, and it remains stable even with capacitive loads exceeding 100 nF-enabling direct integration into noise-sensitive ADC reference paths without added components or layout constraints.
What is the feedback pin (FB) input current specification for the LM4041DEM3X-ADJ/NOPB?
The FB pin input current for the LM4041DEM3X-ADJ/NOPB is 60–100 nA at 25°C (C grade), rising to ≤120 nA over the full −40°C to +125°C temperature range. This ultra-low input current enables high-impedance resistor dividers (e.g., 1 MΩ/2.4 MΩ for 5 V output), minimizing power consumption and self-heating errors in precision applications.
Is the LM4041DEM3X-ADJ/NOPB qualified for automotive applications?
Yes, the LM4041DEM3X-ADJ/NOPB is AEC-Q100 Grade 1 qualified, rated for ambient temperatures from −40°C to +125°C. It is explicitly listed in TI's LM4041-N-Q1 family documentation as meeting automotive reliability and stress-test requirements-including thermal cycling, humidity, and ESD robustness-making it suitable for engine control, ADAS, and body electronics.
How does the LM4041DEM3X-ADJ/NOPB achieve its low temperature coefficient?
The LM4041DEM3X-ADJ/NOPB achieves ≤100 ppm/°C temperature coefficient through bandgap reference architecture with curvature-corrected temperature drift compensation and Zener-zap wafer-level trimming. This design actively counteracts second-order thermal effects across −40°C to +125°C, ensuring predictable, monotonic voltage drift without external compensation networks.
LM4041DEM3X-ADJ/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:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.233V
- Voltage - Output (Max):
- 10 V
- 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:
- 73 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041DEM3X-ADJ/NOPB FAQ
1.How can I place an order for LM4041DEM3X-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DEM3X-ADJ/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 LM4041DEM3X-ADJ/NOPB reliable?
The price and inventory of LM4041DEM3X-ADJ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4041DEM3X-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM4041DEM3X-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4041DEM3X-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4041DEM3X-ADJ/NOPB?
LM4041DEM3X-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4041DEM3X-ADJ/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 LM4041DEM3X-ADJ/NOPB?
For technical support, including LM4041DEM3X-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DEM3X-ADJ/NOPB requirements.
6.How does Aetrix verify that LM4041DEM3X-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041DEM3X-ADJ/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 LM4041DEM3X-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041DEM3X-ADJ/NOPB?
All LM4041DEM3X-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DEM3X-ADJ/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 LM4041DEM3X-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM4041DEM3X-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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