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Texas Instruments LM4040DIM3X-10/NOPB
- Part No.:
- LM4040DIM3X-10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3X-10/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,743
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Product details
Overview
LM4040DIM3X-10/NOPB from Texas Instruments is a precision 10V shunt voltage reference in SOT-23-3 package, rated for industrial temperature range (−40°C to +85°C), with ±1% initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and 35 μVrms wideband noise (10 Hz–10 kHz). It delivers stable reference voltage in analog-to-digital converters, sensor signal conditioning, and programmable power supplies.
For engineers reviewing the LM4040DIM3X-10/NOPB datasheet, LM4040DIM3X-10/NOPB pinout, LM4040DIM3X-10/NOPB application, or LM4040DIM3X-10/NOPB equivalent, this page provides verified electrical parameters, thermal behavior, package-specific operating current (100 μA min), noise performance, and validated alternative options for industrial-grade voltage reference design.
Technical Context
The LM4040DIM3X-10/NOPB operates as a two-terminal shunt reference, requiring only an external current-limiting resistor and tolerating capacitive loads without output capacitor. Its Zener-zap trimmed bandgap architecture achieves ±1% initial accuracy (Grade D) and curvature-corrected temperature drift over −40°C to +85°C.
It features low dynamic impedance (≤1.1 Ω at 1 mA), wide operating current range (100 μA to 15 mA), and inherent stability across load and temperature variations-enabling direct integration into high-precision feedback loops and low-power sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 10 V nominal reverse breakdown voltage, fixed and factory-trimmed |
| Initial Tolerance | ±1% at 25°C (Grade D), translating to ±100 mV absolute error |
| Temp Coefficient | Max 100 ppm/°C over −40°C to +85°C, contributing ≤±8.5 mV drift across full range |
| Min Operating Current | 100 μA - sets minimum bias resistor value for reliable regulation |
| Max Operating Current | 15 mA - defines upper limit for power dissipation and thermal design |
| Output Noise | 35 μVrms (10 Hz–10 kHz), critical for high-resolution ADC reference stability |
| Dynamic Impedance | ≤1.1 Ω at 1 mA - ensures minimal load-induced voltage shift in precision circuits |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, JEDEC-standard footprint. Thermal resistance RθJA = 291.9°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference output node | Connected to regulated voltage rail; sinks all reference current and load current |
| Anode (Pin 2) | Ground reference terminal | Must be connected to system ground; establishes reference potential |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must remain floating or tied to anode per EMI mitigation guidance |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables ultra-compact layout and eliminates capacitor aging/sizing dependencies |
| Capacitive load tolerance | Stable operation with any output capacitance, simplifying filtering in noisy environments |
| Fuse-and-Zener-zap trimming | Ensures Grade D (±1%) accuracy without post-package calibration |
| Low quiescent current | 100 μA minimum enables use in battery-powered and energy-harvesting systems |
| Bandgap curvature correction | Reduces parabolic temperature drift, improving mid-range accuracy vs. basic Zeners |
Applications
| Industrial Data Acquisition | Automotive Sensor Conditioning |
|---|---|
Use Scenario: High-accuracy 16-bit ADC front-end in PLC analog input modules. IC Role / Device Role / Timing Role: Provides stable 10V reference for ratiometric measurement of 4–20 mA loop sensors. Use Value: ±1% initial tolerance and 100 ppm/°C TC ensure <0.2% total error contribution across industrial temperature range. |
Use Scenario: Reference for pressure and temperature sensor signal chains in engine control units. IC Role / Device Role / Timing Role: Shunt reference supplying excitation and scaling voltage to instrumentation amplifiers. Use Value: EMI-tolerant pin 3 option and stable 35 μVrms noise support robust operation near ignition systems. |
| Programmable Power Supply | Energy Infrastructure Monitoring |
Use Scenario: Feedback reference in digitally controlled DC-DC converters for telecom rectifiers. IC Role / Device Role / Timing Role: Sets precise output voltage via optocoupler-coupled error amplifier. Use Value: 15 mA max current supports fast transient response while maintaining regulation under load steps. |
Use Scenario: Calibration reference in smart meter voltage and current measurement ICs. IC Role / Device Role / Timing Role: Primary reference for metrology-grade ADCs measuring grid AC waveforms. Use Value: Low long-term drift (120 ppm @ 1000 hrs) ensures annual recalibration intervals remain valid. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C10IDBZR | ±0.5% initial tolerance, same 10V output, SOT-23-3, but higher 200 ppm/°C TC (max) | Better initial accuracy but worse temperature stability; suited for room-temperature lab equipment | Select when tighter initial spec outweighs temp drift; verify thermal derating at >60°C ambient |
| REF3010AIDBZR | 10V series reference, ±0.2% tolerance, 50 ppm/°C TC, requires bypass capacitor, 50 μA IQ | Lower drift and series topology enable higher PSRR; needs external cap and higher supply headroom | Choose for ultra-low-drift designs where board space allows extra capacitor and supply margin exists |
Compared with TL4050C10IDBZR and REF3010AIDBZR, the LM4040DIM3X-10/NOPB offers optimal balance of industrial-grade temperature stability, no-capacitor simplicity, and proven reliability in harsh environments-making it preferred for cost-sensitive, space-constrained, and thermally variable applications.
Availability
LM4040DIM3X-10/NOPB is available at Aetrix Electronics and suitable for industrial data acquisition, automotive sensor conditioning, and programmable power supply designs requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for LM4040DIM3X-10/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 expertise in precision reference design and automotive-qualified components.
The LM4040-N family was engineered for space-constrained, high-reliability applications demanding micropower operation, low noise, and guaranteed stability-targeting industrial automation, automotive sensing, and energy infrastructure systems.
FAQ
What is the minimum operating current for LM4040DIM3X-10/NOPB?
The LM4040DIM3X-10/NOPB requires a minimum operating current of 100 μA to maintain regulation at 10 V. This value is specified for the 10V variant across the industrial temperature range (−40°C to +85°C) and determines the maximum allowable series resistor when biased from a higher supply voltage. Below this threshold, the device exits regulation and output voltage collapses.
Does LM4040DIM3X-10/NOPB require an output capacitor?
No, the LM4040DIM3X-10/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including direct connection to ADC reference inputs or op-amp feedback nodes. This eliminates capacitor-related aging, leakage, and layout sensitivity-reducing bill-of-materials and improving long-term accuracy.
What is the temperature coefficient specification for LM4040DIM3X-10/NOPB?
The LM4040DIM3X-10/NOPB has a maximum average temperature coefficient of 100 ppm/°C over the industrial temperature range (−40°C to +85°C). This means its output voltage may drift up to ±0.85 mV per °C change from 25°C, resulting in a worst-case total drift of ±8.5 mV across the full range-verified per Grade D specifications in the official TI datasheet.
How is pin 3 (NC) used on LM4040DIM3X-10/NOPB?
Pin 3 of the LM4040DIM3X-10/NOPB is a no-connect terminal. It must remain electrically floating or be connected to the anode (pin 2) to reduce electromagnetic interference susceptibility. TI recommends the latter in high-noise environments-such as near switching power supplies or motor drivers-to suppress coupling into the reference node without affecting regulation performance.
Is LM4040DIM3X-10/NOPB qualified for automotive applications?
No, LM4040DIM3X-10/NOPB is rated for industrial temperature range (−40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, TI offers the LM4040-Q1 variants (e.g., LM4040QAIM3X-10/NOPB), which undergo extended grade testing (−40°C to +125°C) and meet AEC-Q100 stress requirements. The 'N' suffix denotes non-automotive qualification.
LM4040DIM3X-10/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:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 180µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 110 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040DIM3X-10/NOPB FAQ
1.How can I place an order for LM4040DIM3X-10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3X-10/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 LM4040DIM3X-10/NOPB reliable?
The price and inventory of LM4040DIM3X-10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040DIM3X-10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIM3X-10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3X-10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3X-10/NOPB?
LM4040DIM3X-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3X-10/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 LM4040DIM3X-10/NOPB?
For technical support, including LM4040DIM3X-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3X-10/NOPB requirements.
6.How does Aetrix verify that LM4040DIM3X-10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3X-10/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 LM4040DIM3X-10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIM3X-10/NOPB?
All LM4040DIM3X-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3X-10/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 LM4040DIM3X-10/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIM3X-10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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