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Texas Instruments LM4040DIM3X-5.0/NOPB
- Part No.:
- LM4040DIM3X-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040DIM3X-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,547
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Product details
Overview
LM4040DIM3X-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a stable 5.0 V reverse breakdown voltage with ±0.5% initial tolerance (Grade C), 100 ppm/°C max temperature coefficient, and 35 μVrms wideband noise (10 Hz–10 kHz). It operates from 74 μA to 15 mA over −40°C to +85°C and requires no output capacitor-used in analog input modules and field transmitters for ADC biasing and sensor excitation.
For engineers reviewing the LM4040DIM3X-5.0/NOPB datasheet, LM4040DIM3X-5.0/NOPB pinout, LM4040DIM3X-5.0/NOPB application, or LM4040DIM3X-5.0/NOPB equivalent, key selection criteria include its fixed 5.0 V output, Grade C accuracy, SOT-23 thermal performance (RθJA = 291.9°C/W), and compatibility with capacitive loads without external stabilization.
Technical Context
The LM4040DIM3X-5.0/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.5% initial accuracy at 25°C and incorporates bandgap-derived curvature correction for low temperature drift. Its shunt topology regulates voltage by sinking variable current through the cathode while maintaining stable reverse breakdown across load and supply variations.
Designed for space-constrained systems, it eliminates need for output capacitance and tolerates arbitrary capacitive loading-enabling direct integration into high-precision data acquisition front-ends and automotive sensor signal chains where layout simplicity and long-term stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, fixed and non-adjustable-sets precise bias point for ADC references and op-amp feedback networks. |
| Initial Tolerance | ±0.5% at 25°C (Grade C)-guarantees ≤ ±25 mV absolute error before temperature or aging effects. |
| Temp Coefficient | ≤100 ppm/°C (max)-limits voltage drift to ≤ ±500 μV/°C over full industrial range (−40°C to +85°C). |
| Operating Current | 74 μA to 15 mA-supports ultra-low-power sensor nodes and high-current analog stages without external regulation. |
| Output Noise | 35 μVrms (10 Hz–10 kHz)-enables high-resolution (≥16-bit) measurements without added filtering. |
| Dynamic Impedance | 0.3–0.9 Ω at 1 mA-ensures minimal load-induced voltage shift in dynamic current-sink applications. |
| Long-Term Stability | 120 ppm after 1000 hrs-predicts <0.012% output drift over first year of operation under rated conditions. |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, JEDEC-standard footprint with gull-wing leads. 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 node-connects to regulated voltage rail; sinks all excess current to maintain 5.0 V. |
| Anode (Pin 2) | O | Reference ground terminal-must be connected to system ground or low-impedance return path for stable regulation. |
| NC (Pin 3) | - | No-connect; electrically isolated-must remain unconnected or tied to anode per EMI mitigation guidance in datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables single-component voltage reference design-reduces BOM count, PCB area, and startup delay in portable instrumentation. |
| Capacitive load tolerance | Stable with any output capacitance value-allows direct buffering of noisy ADC inputs or long trace routing without oscillation risk. |
| Zener-zap voltage trim | Ensures ±0.5% initial accuracy without post-package calibration-lowers test cost and improves yield consistency. |
| Bandgap temperature curvature correction | Minimizes parabolic drift across −40°C to +85°C-delivers tighter overall accuracy than basic Zener references. |
| Low quiescent current | 74 μA minimum operating current-supports battery-powered field transmitters with multi-year runtime on primary cells. |
Applications
| Field Transmitters | Energy Infrastructure |
|---|---|
Use Scenario: 4–20 mA loop-powered sensor transmitter conditioning analog signals from pressure/temperature sensors. IC Role / Device Role / Timing Role: Shunt reference providing stable 5.0 V excitation for bridge sensors and precision ADC reference for digitizing sensor outputs. Use Value: Enables ±0.1% total measurement accuracy over industrial temperature range without recalibration. |
Use Scenario: Smart meter analog front-end measuring grid voltage/current with isolation and anti-tampering features. IC Role / Device Role / Timing Role: Primary voltage reference for sigma-delta ADCs sampling AC waveforms at 1–10 kSPS. Use Value: 35 μVrms noise and 100 ppm/°C TC ensure <0.05% energy billing error across −25°C to +70°C ambient. |
| Data Acquisition | Analog Input Module |
Use Scenario: Modular DAQ system with multiple 16-bit ADC channels sharing common reference rail. IC Role / Device Role / Timing Role: Per-channel or shared shunt reference establishing accurate full-scale voltage for successive-approximation ADCs. Use Value: 0.3–0.9 Ω dynamic impedance prevents channel-to-channel crosstalk during multiplexed sampling. |
Use Scenario: PLC analog input card accepting 0–10 V, ±5 V, or 4–20 mA field signals with programmable gain. IC Role / Device Role / Timing Role: Precision 5.0 V reference for PGA and ADC subsystem-calibrated against internal DAC during self-test. Use Value: 120 ppm long-term stability reduces annual calibration frequency from quarterly to annually. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C50IDBZR | Same 5.0 V output, ±0.5% grade, but higher 150 ppm/°C tempco and 50 μVrms noise. | Less suitable for high-resolution DAQ; acceptable in cost-sensitive industrial I/O where 16-bit accuracy is not required. | Select TL4050C50IDBZR only if lower unit cost outweighs 15 μVrms noise penalty and 50 ppm/°C TC margin loss. |
| REF3050AIDBZR | Series reference (not shunt); 5.0 V, ±0.2% grade, 50 ppm/°C, requires 1.5 mA min supply current and output cap. | Requires additional pass transistor and bypass cap-increases board area and complicates low-current designs. | Choose REF3050AIDBZR only when sink-current limitation or ground-referenced topology is unacceptable in the system architecture. |
Compared with TL4050C50IDBZR and REF3050AIDBZR, LM4040DIM3X-5.0/NOPB offers superior noise performance and lower thermal drift in a simpler shunt configuration-making it optimal for compact, low-power, high-accuracy analog signal chains where ground-referenced regulation is permissible.
Availability
LM4040DIM3X-5.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure meters, and analog input modules requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for LM4040DIM3X-5.0/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 decades of expertise in precision voltage references and industrial-grade ICs.
The LM4040-N series was designed specifically for space-constrained, high-stability applications in industrial automation, automotive sensing, and test equipment-emphasizing micropower operation, zero-capacitor stability, and robust thermal performance.
FAQ
What is the maximum operating current for LM4040DIM3X-5.0/NOPB?
The LM4040DIM3X-5.0/NOPB supports a maximum operating current of 15 mA across its full temperature range. This limit ensures safe power dissipation within the SOT-23 package's 306 mW rating at 25°C ambient, with appropriate derating above that temperature per its 291.9°C/W junction-to-ambient thermal resistance.
Does LM4040DIM3X-5.0/NOPB require an external output capacitor?
No, LM4040DIM3X-5.0/NOPB does not require an external output capacitor. Its internal design provides inherent stability with any capacitive load, eliminating the need for external compensation-unlike many older shunt references that oscillate without proper bypassing.
What is the minimum operating current for LM4040DIM3X-5.0/NOPB at 25°C?
The LM4040DIM3X-5.0/NOPB has a minimum operating current of 74 μA at 25°C. Below this threshold, regulation degrades and output voltage deviates from 5.0 V; this value increases slightly at temperature extremes per datasheet specifications.
Is LM4040DIM3X-5.0/NOPB qualified for automotive applications?
No, LM4040DIM3X-5.0/NOPB is not AEC-Q100 qualified. It belongs to the industrial-grade LM4040-N family (Temperature Grade I, −40°C to +85°C). For automotive use, TI offers the LM4040-N-Q1 variants such as LM4040QAIM3X-5.0/NOPB (Grade A, Extended Grade 1).
What does the 'DIM3X' suffix indicate in LM4040DIM3X-5.0/NOPB?
The 'DIM3X' suffix identifies the device as a Grade C (±0.5%), SOT-23-3 packaged, tape-and-reel orderable variant of the LM4040-N 5.0 V reference. The 'X' denotes enhanced manufacturing flow for improved consistency, and '/NOPB' confirms lead-free and RoHS-compliant packaging.
LM4040DIM3X-5.0/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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 150ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 80µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 85 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040DIM3X-5.0/NOPB FAQ
1.How can I place an order for LM4040DIM3X-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040DIM3X-5.0/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-5.0/NOPB reliable?
The price and inventory of LM4040DIM3X-5.0/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-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040DIM3X-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040DIM3X-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040DIM3X-5.0/NOPB?
LM4040DIM3X-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040DIM3X-5.0/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-5.0/NOPB?
For technical support, including LM4040DIM3X-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040DIM3X-5.0/NOPB requirements.
6.How does Aetrix verify that LM4040DIM3X-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040DIM3X-5.0/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-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040DIM3X-5.0/NOPB?
All LM4040DIM3X-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040DIM3X-5.0/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-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040DIM3X-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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