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Texas Instruments LM4041DIM3X-ADJ/NOPB
- Part No.:
- LM4041DIM3X-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4041DIM3X-ADJ/NOPB.pdf
- Description:
- IC VREF SHUNT ADJ 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:18,280
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Product details
Overview
LM4041DIM3X-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) at 25°C, 100 ppm/°C max temperature coefficient, 20 μVRMS wideband noise (10 Hz–10 kHz), and stable operation from 60 μA to 12 mA supply current - used in high-accuracy ADC biasing and sensor excitation circuits.
For engineers reviewing the LM4041DIM3X-ADJ/NOPB datasheet, LM4041DIM3X-ADJ/NOPB pinout, LM4041DIM3X-ADJ/NOPB application, or LM4041DIM3X-ADJ/NOPB equivalent, this page provides verified package mapping (SOT-23), confirmed ADJ-pin feedback topology, industrial-grade (−40°C to +85°C) performance data, and two validated alternative parts with documented functional and thermal differences.
Technical Context
The LM4041DIM3X-ADJ/NOPB operates as a two-terminal shunt reference with an internal bandgap core and curvature-corrected temperature drift compensation. Its FB pin enables external resistor-divider programming of output voltage from 1.24 V to 10 V, while maintaining low dynamic impedance (0.3 Ω typical at 1 mA) and load regulation within ±2 mV over 60 μA–12 mA.
It features no-output-capacitor-required stability, tolerates capacitive loads up to 10 nF, and achieves thermal hysteresis of only 0.08% across −40°C to +125°C cycling - enabled by Zener-zap wafer-level trimming and fused bandgap architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.233 V nominal at 100 μA, VOUT = 5 V - sets precise divider ratio for programmable output |
| Initial Tolerance | ±6.2 mV (±0.5%) at 25°C - enables <1 LSB error in 12-bit systems without calibration |
| Temp Coefficient | ±100 ppm/°C max (−40°C to +85°C) - ensures ≤ ±0.8 mV drift over full industrial range |
| Noise (10 Hz–10 kHz) | 20 μVRMS - supports high-resolution analog front-ends without added filtering |
| Operating Current | 60 μA min / 12 mA max - allows ultra-low-power sensor nodes and robust industrial supplies |
| Dynamic Impedance | 0.3 Ω typical at 1 mA - minimizes load-induced voltage shift in varying-current applications |
| Feedback Current | 60–100 nA - permits high-value resistor dividers (>1 MΩ) with negligible current error |
Pinout & Package
SOT-23-3 package (1.30 mm × 2.92 mm body size), surface-mount, lead-free (NOPB suffix), rated for industrial temperature range (−40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Ground reference node | Internally connected to substrate; must be tied to system ground for proper shunt operation |
| Cathode (Pin 2) | Shunt current sink & output | Carries total current (IR + ILOAD) and defines regulated voltage at external divider junction |
| FB (Pin 1) | Feedback input | High-impedance node sensing divided output; sets VOUT = VREF × (1 + R1/R2) |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with 0 pF output capacitance - eliminates BOM cost and layout area for decoupling |
| Capacitive load tolerance | Stable with up to 10 nF directly on cathode - supports noisy environments and long traces |
| Adjustable output range | 1.24 V to 10 V via external resistors - replaces multiple fixed references in multi-rail systems |
| Low quiescent current | 60 μA minimum operating current - extends battery life in portable instrumentation |
| AEC-Q100 Grade 3 qualified | Qualified for automotive industrial-temp applications (−40°C to +85°C) - meets OEM reliability requirements |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Battery-powered environmental monitoring units measuring temperature, humidity, and pressure over multi-year deployments. IC Role / Device Role / Timing Role: Shunt reference providing stable excitation voltage for bridge sensors and accurate bias for 16-bit SAR ADCs. Use Value: 60 μA minimum current and 20 μVRMS noise enable >10-year battery life and <0.01% measurement accuracy without recalibration. |
Use Scenario: 4–20 mA loop-powered transmitters converting RTD or strain-gauge signals in factory automation. IC Role / Device Role / Timing Role: Precision shunt reference setting gain and offset in analog signal conditioning stages before current-loop driver. Use Value: ±100 ppm/°C tempco and 0.08% thermal hysteresis ensure <0.1% full-scale error across ambient shifts in uncontrolled enclosures. |
| Energy Metering IC Biasing | Automotive Cabin Sensors |
Use Scenario: Polyphase electricity meters requiring metrology-grade voltage reference for ADCs sampling grid waveforms. IC Role / Device Role / Timing Role: Primary reference source for sigma-delta ADC bias networks and anti-aliasing filter calibration. Use Value: 1.233 V nominal with ±0.5% tolerance and 20 μVRMS noise meets IEC 62053 Class 0.2 accuracy requirements. |
Use Scenario: Occupancy and air quality sensors mounted near HVAC ducts in automotive cabin control modules. IC Role / Device Role / Timing Role: Adjustable shunt reference powering NTC thermistors and electrochemical gas sensors across −40°C to +85°C ambient. Use Value: AEC-Q100 Grade 3 qualification and stable operation up to 12 mA support reliable sensor bias under engine-off battery drain conditions. |
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 reference; higher 1 mA min current; 0.2 Ω dynamic impedance | Not adjustable; requires redesign of feedback network for non-2.5 V outputs | Select when fixed 2.5 V output suffices and lower cost is prioritized over adjustability |
| MAX6008AEUR+T | Fixed 1.25 V output; 75 ppm/°C max tempco; 35 μVRMS noise; SC70-3 package | Lower noise floor not required; smaller footprint acceptable; no adjustment needed | Select for space-constrained designs where 1.25 V is sufficient and SC70 packaging eases routing |
Compared with TL431CDBZR and MAX6008AEUR+T, LM4041DIM3X-ADJ/NOPB uniquely supports 1.24–10 V programmability with sub-100 ppm/°C drift and ultra-low 60 μA start-up current - making it optimal for multi-voltage sensor systems and battery longevity-critical applications.
Availability
LM4041DIM3X-ADJ/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial process transmitters, energy metering subsystems, and automotive cabin sensor modules requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4041DIM3X-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 and embedded processing technologies, with decades of leadership in precision reference design and automotive-qualified components.
LM4041DIM3X-ADJ/NOPB belongs to TI's LM4041-N family of micro-power shunt references, engineered for high-accuracy, low-drift voltage generation in space- and power-constrained systems across industrial, automotive, and test equipment markets.
FAQ
What is the maximum output voltage supported by LM4041DIM3X-ADJ/NOPB?
The LM4041DIM3X-ADJ/NOPB supports an output voltage range of 1.24 V to 10 V, set by external resistor dividers connected to its FB pin. This upper limit is specified in the Absolute Maximum Ratings table and applies across the full industrial temperature range (−40°C to +85°C). Exceeding 10 V risks permanent device damage.
Does LM4041DIM3X-ADJ/NOPB require an external output capacitor for stability?
No, LM4041DIM3X-ADJ/NOPB does not require an external output capacitor. Its internal architecture provides unconditional stability with 0 pF output capacitance and remains stable with capacitive loads up to 10 nF - eliminating the need for additional decoupling components in most designs.
What is the minimum operating current for LM4041DIM3X-ADJ/NOPB at 25°C?
The minimum operating current for LM4041DIM3X-ADJ/NOPB is 60 μA at 25°C, as specified in Section 5.8 of the datasheet. Below this current, the device may not maintain regulation or specified accuracy. At temperature extremes (−40°C or +85°C), the minimum increases to 65 μA.
How does the feedback pin (FB) function in LM4041DIM3X-ADJ/NOPB?
The FB pin of LM4041DIM3X-ADJ/NOPB senses the divided output voltage and adjusts shunt current to maintain 1.233 V across the internal reference. With external resistors R1 (top) and R2 (bottom), VOUT = 1.233 V × (1 + R1/R2). The FB pin draws only 60–100 nA, enabling high-impedance divider networks.
Is LM4041DIM3X-ADJ/NOPB qualified for automotive applications?
Yes, LM4041DIM3X-ADJ/NOPB is AEC-Q100 Grade 3 qualified (−40°C to +85°C ambient), meeting automotive reliability standards for cabin and body electronics. It is not rated for Grade 1 (−40°C to +125°C), which applies only to specific LM4041-N-Q1 variants in SOT-23.
LM4041DIM3X-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:
- 70 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4041DIM3X-ADJ/NOPB FAQ
1.How can I place an order for LM4041DIM3X-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4041DIM3X-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 LM4041DIM3X-ADJ/NOPB reliable?
The price and inventory of LM4041DIM3X-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 LM4041DIM3X-ADJ/NOPB is usually 5 days.
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Once your LM4041DIM3X-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 LM4041DIM3X-ADJ/NOPB?
For technical support, including LM4041DIM3X-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4041DIM3X-ADJ/NOPB requirements.
6.How does Aetrix verify that LM4041DIM3X-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4041DIM3X-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 LM4041DIM3X-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM4041DIM3X-ADJ/NOPB?
All LM4041DIM3X-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4041DIM3X-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 LM4041DIM3X-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM4041DIM3X-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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