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Texas Instruments LM4040DIM3X-2.0/NOPB
- Part No.:
- LM4040DIM3X-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3X-2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,203
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Product details
Overview
LM4040DIM3X-2.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a fixed 2.048 V reverse breakdown voltage with ±10 mV (±0.5%) initial tolerance at 25°C, 100 ppm/°C max temperature coefficient, and 35 μVrms wideband noise (10 Hz–10 kHz). It operates from 60 μA to 15 mA over −40°C to +85°C and requires no output capacitor.
For engineers reviewing the LM4040DIM3X-2.0/NOPB datasheet, LM4040DIM3X-2.0/NOPB pinout, LM4040DIM3X-2.0/NOPB application, or LM4040DIM3X-2.0/NOPB equivalent, key selection criteria include industrial-grade temperature range, low quiescent current stability, capacitive load tolerance, and AEC-Q100 Grade 3 qualification for automotive subsystems.
Technical Context
The LM4040DIM3X-2.0/NOPB implements a trimmed Zener-based shunt reference architecture with bandgap curvature correction for stable voltage accuracy across temperature and current. Its fuse-and-Zener-zap wafer-sort trim ensures ±0.5% initial tolerance (Grade C) and supports operation without external stabilization capacitance.
It maintains dynamic impedance of ≤0.9 Ω at 1 mA and exhibits thermal hysteresis of only 0.08%, enabling high-precision analog signal conditioning in data acquisition and field transmitter circuits where long-term drift and load regulation must be tightly controlled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal reverse breakdown voltage - provides exact 12-bit DAC full-scale reference when paired with 2.048 V ADCs. |
| Initial Tolerance | ±10 mV (±0.5%) at 25°C - enables single-point calibration in industrial sensor front-ends without trimming. |
| Temp Coefficient | ≤100 ppm/°C - ensures <±1.3 mV drift over −40°C to +85°C, critical for unheated outdoor energy infrastructure nodes. |
| Operating Current | 60 μA to 15 mA - supports ultra-low-power wake-up circuits and high-current buffer stages without redesign. |
| Output Noise | 35 μVrms (10 Hz–10 kHz) - preserves SNR in 16-bit+ data acquisition systems without additional filtering. |
| Dynamic Impedance | ≤0.9 Ω at 1 mA - minimizes load-induced voltage shift in varying-current analog input modules. |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, JEDEC MO-178 compatible. Thermal resistance RθJA = 291.9°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Shunt current path and output voltage node - connects to regulated rail; sinks all excess current to ground via series resistor. |
| Anode (Pin 2) | O | Ground reference terminal - must be connected to system ground; defines cathode-to-anode potential. |
| NC (Pin 3) | - | No-connect - left floating or tied to anode per EMI mitigation guidance; not internally bonded in SOT-23 variant. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables space-constrained PCB layouts in SC70/SOT-23 footprints without stability compromises. |
| Capacitive load tolerance | Stable with any output capacitance - eliminates need for RC snubbing in noisy industrial environments. |
| AEC-Q100 Grade 3 qualified | Validated for −40°C to +85°C automotive subsystems including body control and ADAS sensors. |
| Fuse-and-Zener-zap trim | Ensures production-grade ±0.5% initial accuracy without post-package calibration labor. |
Applications
| Field Transmitters | Energy Infrastructure |
|---|---|
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitters in oil & gas wellheads. IC Role / Device Role / Timing Role: Shunt reference for DAC output scaling and ADC reference in analog front-end. Use Value: 60 μA minimum operating current enables operation during low-loop-current diagnostic modes without dropout. | Use Scenario: Smart metering units deployed in utility substations with wide ambient temperature swings. IC Role / Device Role / Timing Role: Precision voltage reference for metrology-grade ADCs measuring grid voltage/current harmonics. Use Value: ≤100 ppm/°C tempco ensures <±0.1% measurement error across −40°C to +85°C without software compensation. |
| Data Acquisition | Automotive |
Use Scenario: Portable handheld test equipment requiring battery life >100 hours and 16-bit measurement fidelity. IC Role / Device Role / Timing Role: Low-noise reference for SAR ADCs sampling sensor signals at 100 kSPS. Use Value: 35 μVrms noise floor preserves ENOB in battery-powered DAQ without active filtering overhead. | Use Scenario: Cabin air quality sensor modules in passenger vehicles with AEC-Q100 compliance requirements. IC Role / Device Role / Timing Role: Stable reference for CO₂/NIR sensor signal conditioning ICs in HVAC control units. Use Value: AEC-Q100 Grade 3 qualification and 0.08% thermal hysteresis ensure repeatable calibration after thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3-2.0/NOPB | Same SOT-23-3 package, identical 2.048 V output and ±0.5% tolerance, but rated for industrial grade only (−40°C to +85°C), not AEC-Q100. | Lacks automotive qualification - suitable for non-automotive industrial DAQ but not for vehicle cabin modules. | Select when AEC-Q100 is not required and cost optimization is prioritized. |
| MAX6002EUR+T | 2.048 V shunt reference in SOT-23-3; ±0.5% initial accuracy; higher 50 μVrms noise and 150 ppm/°C max tempco. | Higher noise and drift limit use in 16-bit+ metrology; not AEC-Q100 qualified. | Choose only if TI supply chain constraints exist and performance degradation is acceptable. |
Compared with LM4040CIM3-2.0/NOPB, the LM4040DIM3X-2.0/NOPB adds AEC-Q100 Grade 3 qualification and tighter thermal hysteresis (0.08% vs typical 0.1%), while MAX6002EUR+T trades off noise and tempco for alternate sourcing - making LM4040DIM3X-2.0/NOPB optimal for automotive-qualified, low-drift industrial sensing.
Availability
LM4040DIM3X-2.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure monitoring, and automotive cabin sensor modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM4040DIM3X-2.0/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 over 90 years of innovation in precision analog ICs.
The LM4040-N series was designed specifically for space-constrained, high-accuracy shunt reference applications in industrial, automotive, and energy infrastructure systems where micropower operation and long-term stability are mandatory.
FAQ
What is the maximum operating current for LM4040DIM3X-2.0/NOPB?
The LM4040DIM3X-2.0/NOPB supports a maximum operating current of 15 mA across its full temperature range. This allows it to drive moderate-output-buffer stages or multiple parallel loads while maintaining specified voltage accuracy and thermal stability within the SOT-23 package's 306 mW power dissipation limit at 25°C ambient.
Does LM4040DIM3X-2.0/NOPB require an external capacitor for stability?
No, the LM4040DIM3X-2.0/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 long PCB traces - eliminating layout sensitivity and reducing BOM count in compact designs.
What temperature range is LM4040DIM3X-2.0/NOPB rated for?
The LM4040DIM3X-2.0/NOPB is rated for the industrial temperature range of −40°C to +85°C. It is also AEC-Q100 Grade 3 qualified, meaning it meets automotive reliability and stress-test requirements for that same temperature span, though it is not rated for extended automotive Grade 1 (−40°C to +125°C) operation.
How does the pin configuration of LM4040DIM3X-2.0/NOPB differ from SC70 variants?
The LM4040DIM3X-2.0/NOPB uses the SOT-23-3 (DBZ) package with Cathode on Pin 1, Anode on Pin 2, and NC on Pin 3. In contrast, SC70 variants (e.g., LM4040DIM7-2.0) use a 5-pin DCK package where Pins 4 and 5 are NC - making the SOT-23 version pin-compatible only with other DBZ-marked LM4040 variants, not SC70 or TO-92.
What is the wideband noise specification for LM4040DIM3X-2.0/NOPB?
The LM4040DIM3X-2.0/NOPB delivers 35 μVrms wideband noise over the 10 Hz to 10 kHz frequency range, measured at 100 μA operating current. This low noise floor directly supports high-resolution (≥16-bit) data acquisition systems without requiring additional low-pass filtering or noise-reduction circuitry.
LM4040DIM3X-2.0/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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- 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
LM4040DIM3X-2.0/NOPB FAQ
1.How can I place an order for LM4040DIM3X-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3X-2.0/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-2.0/NOPB reliable?
The price and inventory of LM4040DIM3X-2.0/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-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIM3X-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3X-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3X-2.0/NOPB?
LM4040DIM3X-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3X-2.0/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-2.0/NOPB?
For technical support, including LM4040DIM3X-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3X-2.0/NOPB requirements.
6.How does Aetrix verify that LM4040DIM3X-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3X-2.0/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-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIM3X-2.0/NOPB?
All LM4040DIM3X-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3X-2.0/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-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIM3X-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040DIM3X-2.0/NOPB Tags
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