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Texas Instruments LM4040BIM3-3.0/NOPB
- Part No.:
- LM4040BIM3-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040BIM3-3.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,393
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Product details
Overview
LM4040BIM3-3.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 3.0 V reverse breakdown voltage with ±0.2% initial tolerance (Grade B) at 25°C, 100 ppm/°C max temperature coefficient, and 35 μVrms wideband noise (10 Hz–10 kHz). It operates from 62 μA to 15 mA over −40°C to +85°C and requires no output capacitor.
For engineers reviewing the LM4040BIM3-3.0/NOPB datasheet, LM4040BIM3-3.0/NOPB pinout, LM4040BIM3-3.0/NOPB application, or LM4040BIM3-3.0/NOPB equivalent, key selection criteria include shunt reference stability under capacitive loads, low-current operation in space-constrained analog signal chains, and AEC-Q100 Grade 3 qualification for industrial and automotive sensing systems.
Technical Context
The LM4040BIM3-3.0/NOPB uses Zener-zap trimming during wafer sort to achieve ±0.2% initial accuracy and incorporates bandgap-derived temperature drift curvature correction. Its low dynamic impedance (0.3–0.8 Ω at 1 mA) ensures minimal voltage shift across operating current (62 μA–15 mA) and temperature (−40°C to +85°C).
Unlike series references, it functions as a two-terminal shunt device-cathode supplies regulated voltage while anode connects to system ground-enabling simple biasing of ADCs, DACs, and transmitters without external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal reverse breakdown voltage, fixed and non-adjustable |
| Initial Tolerance | ±0.2% at 25°C (Grade B), enabling high-accuracy calibration without trimming |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C, limiting drift to ±24 mV across full range |
| Operating Current | 62 μA minimum to 15 mA maximum, supporting ultra-low-power and high-drive applications |
| Output Noise | 35 μVrms (10 Hz–10 kHz), suitable for 16-bit+ data acquisition systems |
| Dynamic Impedance | 0.3–0.8 Ω at 1 mA, ensuring <1 mV load regulation error up to 1 mA step change |
| Thermal Hysteresis | 0.08% after −40°C/125°C cycling, preserving long-term reference stability |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body, 1.0 mm max height, JEDEC MO-178 compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / regulated output node | Connects to supply rail; sinks current to maintain 3.0 V at this node relative to anode |
| Anode (Pin 2) | Reference ground terminal | Must be connected to system ground; defines 0 V reference for cathode voltage |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must float or tie to anode per EMI mitigation guidance |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable operation with any capacitive load up to 10 nF, eliminating BOM cost and layout area |
| Micropower operation | 62 μA minimum operating current enables use in battery-powered field transmitters |
| Low thermal hysteresis | 0.08% voltage shift after thermal cycling ensures repeatable calibration in cyclic environments |
| Zener-zap trimmed accuracy | Fuse-based wafer-level trimming achieves ±0.2% initial tolerance without post-package adjustment |
| AEC-Q100 Grade 3 qualified | Validated for −40°C to +85°C operation in automotive subsystems including body control modules |
Applications
| Industrial Data Acquisition | Automotive Sensor Interface |
|---|---|
Use Scenario: High-resolution 16-bit SAR ADC front-end in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Shunt reference providing stable 3.0 V reference for ADC internal conversion and external signal conditioning. Use Value: 35 μVrms noise and ≤100 ppm/°C drift enable <±0.01% total unadjusted error over temperature without recalibration. |
Use Scenario: Supply-sensing circuit in engine control unit (ECU) for monitoring 5 V rail integrity. IC Role / Device Role / Timing Role: Precision shunt element in resistor-divider feedback path for rail monitor comparator. Use Value: ±0.2% initial tolerance and AEC-Q100 Grade 3 qualification ensure reliable fault detection across automotive temperature range. |
| Field Transmitter Calibration | Energy Infrastructure Monitoring |
Use Scenario: 4–20 mA loop-powered pressure transmitter requiring stable excitation for bridge sensors. IC Role / Device Role / Timing Role: Low-current shunt reference powering instrumentation amplifier and ADC reference simultaneously. Use Value: 62 μA min operating current allows full functionality even at lowest loop current (3.5 mA), extending usable range. |
Use Scenario: Voltage reference in smart meter analog front-end measuring grid phase voltages. IC Role / Device Role / Timing Role: Primary reference for metrology-grade ADC sampling AC mains with harmonic analysis. Use Value: 0.08% thermal hysteresis prevents calibration drift after daily thermal cycles in outdoor meter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3-3.0/NOPB | ±0.5% initial tolerance (Grade C), same 3.0 V, SOT-23 package | Lower accuracy; acceptable where calibration is performed in-system | Select when cost sensitivity outweighs need for factory-trimmed ±0.2% accuracy |
| REF3030AIDBZR | 3.0 V series reference, 50 ppm/°C tempco, 25 μVrms noise, 50 μA quiescent current | Three-terminal architecture requires input decoupling; not drop-in compatible | Choose for lower noise and tighter tempco where board space permits series topology and extra capacitor |
Compared with LM4040CIM3-3.0/NOPB, the LM4040BIM3-3.0/NOPB delivers 2.5× tighter initial tolerance for calibration-critical roles; versus REF3030AIDBZR, it offers simpler two-terminal integration and higher current drive but trades off 10 ppm/°C tempco and 10 μVrms noise.
Availability
LM4040BIM3-3.0/NOPB is available at Aetrix Electronics and suitable for industrial data acquisition, automotive sensor interfaces, and field transmitter designs requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4040BIM3-3.0/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 company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with broad industrial, automotive, and consumer product portfolios.
The LM4040-N series was designed specifically for space-constrained, low-power precision analog systems requiring stable shunt references without external stabilization-targeting field instruments, energy meters, and automotive ECUs.
FAQ
What is the minimum operating current for LM4040BIM3-3.0/NOPB?
The LM4040BIM3-3.0/NOPB requires a minimum operating current of 62 μA at 25°C to maintain regulation within specification. This value increases slightly at temperature extremes, reaching 65 μA over the full −40°C to +85°C industrial range. Operation below this threshold may result in loss of specified voltage accuracy and increased dynamic impedance.
Does LM4040BIM3-3.0/NOPB require an output capacitor?
No, the LM4040BIM3-3.0/NOPB does not require an output capacitor for stability. Its internal design tolerates capacitive loads up to at least 10 nF without oscillation or overshoot, simplifying layout and reducing bill-of-materials count in compact analog circuits.
Is LM4040BIM3-3.0/NOPB qualified for automotive use?
Yes, the LM4040BIM3-3.0/NOPB is AEC-Q100 Grade 3 qualified (−40°C to +85°C), making it suitable for non-safety-critical automotive applications such as body control modules, climate control sensors, and infotainment power monitoring circuits.
What is the thermal hysteresis specification for LM4040BIM3-3.0/NOPB?
The LM4040BIM3-3.0/NOPB exhibits 0.08% thermal hysteresis-defined as the voltage difference measured at 25°C after cycling to −40°C versus after cycling to +125°C. This low hysteresis supports repeatable calibration in equipment subject to repeated thermal cycling.
How does the pin configuration of LM4040BIM3-3.0/NOPB differ from standard SOT-23 devices?
The LM4040BIM3-3.0/NOPB uses a non-standard SOT-23 pinout: Pin 1 = Cathode (output), Pin 2 = Anode (ground), Pin 3 = NC (no connect). Unlike typical ICs, it is a two-terminal device; Pin 3 must remain floating or be tied to Pin 2 in high-EMI environments per TI's layout guidance.
LM4040BIM3-3.0/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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 67 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040BIM3-3.0/NOPB FAQ
1.How can I place an order for LM4040BIM3-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIM3-3.0/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 LM4040BIM3-3.0/NOPB reliable?
The price and inventory of LM4040BIM3-3.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040BIM3-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040BIM3-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIM3-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIM3-3.0/NOPB?
LM4040BIM3-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIM3-3.0/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 LM4040BIM3-3.0/NOPB?
For technical support, including LM4040BIM3-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIM3-3.0/NOPB requirements.
6.How does Aetrix verify that LM4040BIM3-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040BIM3-3.0/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 LM4040BIM3-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040BIM3-3.0/NOPB?
All LM4040BIM3-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIM3-3.0/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 LM4040BIM3-3.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040BIM3-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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