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Texas Instruments LM4040QDIM3X2.5/NOPB
- Part No.:
- LM4040QDIM3X2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040QDIM3X2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,874
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Product details
Overview
LM4040QDIM3X2.5/NOPB from Texas Instruments is an AEC-Q100 Grade 3 qualified precision micropower shunt voltage reference with 2.5V nominal reverse breakdown voltage, ±0.5% initial tolerance (C grade), and 100 ppm/°C max temperature coefficient. It operates from −40°C to +85°C, supports 60 μA to 15 mA cathode current, and delivers 35 μVrms wideband noise (10 Hz–10 kHz) for high-accuracy analog sensing in automotive and industrial data acquisition systems.
For engineers reviewing the LM4040QDIM3X2.5/NOPB datasheet, LM4040QDIM3X2.5/NOPB pinout, LM4040QDIM3X2.5/NOPB application, or LM4040QDIM3X2.5/NOPB equivalent, key selection criteria include its SOT-23-3 package, no-output-capacitor requirement, capacitive-load tolerance, and verified performance across automotive-grade temperature and current ranges.
Technical Context
The LM4040QDIM3X2.5/NOPB implements a trimmed Zener-based shunt reference architecture with bandgap temperature drift curvature correction. Its dynamic impedance is 0.3–0.9 Ω at 1 mA, enabling stable regulation under varying load conditions without external compensation.
It features fuse-and-Zener-zap wafer-level trimming for ±0.5% initial accuracy and integrates thermal hysteresis control (0.08%) and long-term stability of 120 ppm over 1000 hours - critical for field-transmitter calibration integrity and automotive sensor signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V nominal reverse breakdown voltage; fixed value, no adjustment required. |
| Initial Tolerance | ±0.5% at 25°C (C grade); enables single-point calibration in production test. |
| Temp Coefficient | ≤100 ppm/°C max; ensures ≤±19 mV total drift over −40°C to +85°C. |
| Operating Current | 60 μA to 15 mA cathode current range; supports ultra-low-power and high-current biasing. |
| Output Noise | 35 μVrms (10 Hz–10 kHz); suitable for 16-bit+ ADC reference applications. |
| Dynamic Impedance | 0.3–0.9 Ω at 1 mA; maintains tight regulation despite load transients. |
| Thermal Hysteresis | 0.08% after −40°C/125°C cycling; preserves repeatability in cyclic thermal environments. |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, JEDEC-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | I/O | Shunt current path and output voltage node; connects to regulated supply rail. |
| Anode (Pin 2) | O | Reference ground terminal; must be connected to system ground or low-impedance return. |
| NC (Pin 3) | - | No-connect; must float or tie to anode for EMI suppression in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 3 qualification | Validated for automotive applications requiring −40°C to +85°C operation and robust reliability. |
| No output capacitor required | Eliminates BOM cost and layout area; simplifies design for space-constrained PCBs. |
| Capacitive load tolerance | Stable with any output capacitance; avoids oscillation in ADC reference or op-amp bias networks. |
| Low quiescent current | 60 μA minimum operating current enables battery-powered sensor nodes. |
| Zener-zap trimmed accuracy | Ensures ±0.5% initial tolerance without post-package calibration. |
Applications
| Field Transmitters | Automotive Sensors |
|---|---|
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitters in oil & gas infrastructure. IC Role / Device Role / Timing Role: Precision 2.5V shunt reference for DAC output scaling and current-loop excitation. Use Value: Enables <16-bit effective resolution with <±0.5% total error budget over temperature and lifetime. | Use Scenario: Cabin air quality sensors and tire pressure monitoring systems (TPMS) with extended temperature exposure. IC Role / Device Role / Timing Role: Stable voltage reference for analog front-end signal conditioning and microcontroller ADC reference. Use Value: Maintains calibration integrity across −40°C to +85°C with <0.08% thermal hysteresis. |
| Data Acquisition Systems | Industrial Analog Input Modules |
Use Scenario: Portable multichannel data loggers measuring thermocouples, RTDs, and strain gauges. IC Role / Device Role / Timing Role: Low-noise 2.5V reference for sigma-delta ADCs and programmable gain instrumentation amplifiers. Use Value: 35 μVrms noise supports >100 dB SNR in 24-bit measurement systems. | Use Scenario: DIN-rail mounted PLC analog input cards with 16-channel 0–10 V/4–20 mA support. IC Role / Device Role / Timing Role: Per-channel shunt reference for isolated ADC inputs and current-sense amplifier biasing. Use Value: SOT-23-3 footprint allows dense channel packing while maintaining ±0.5% accuracy per channel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3X2.5/NOPB | Same 2.5V C-grade spec, non-automotive qualification; no AEC-Q100 testing. | Lacks automotive reliability validation; unsuitable for safety-critical vehicle subsystems. | Select when industrial-grade performance suffices and AEC-Q100 is not mandated. |
| MAX6008AEUR+T | 2.5V shunt reference with ±0.2% initial accuracy, 75 ppm/°C tempco, SC70-3 package. | Higher accuracy but lower temperature rating (−40°C to +85°C only, no extended grade). | Choose for tighter initial tolerance where thermal drift is less dominant than startup accuracy. |
Compared with LM4040CIM3X2.5/NOPB, the LM4040QDIM3X2.5/NOPB adds AEC-Q100 Grade 3 compliance without sacrificing noise or dynamic impedance; versus MAX6008AEUR+T, it trades ±0.2% initial tolerance for broader automotive temperature support and lower cost in volume production.
Availability
LM4040QDIM3X2.5/NOPB is available at Aetrix Electronics and suitable for automotive sensor modules, industrial data loggers, and field transmitter designs requiring stable component supply with full traceability and lifecycle management.
Supply support for LM4040QDIM3X2.5/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 delivering analog, embedded processing, and connectivity solutions with deep expertise in precision analog ICs.
The LM4040-N/Q1 product line delivers micropower shunt references optimized for space-constrained, high-accuracy applications in automotive, industrial, and energy infrastructure systems.
FAQ
What is the maximum operating current for LM4040QDIM3X2.5/NOPB?
The LM4040QDIM3X2.5/NOPB supports a maximum cathode current of 15 mA across its full operating temperature range (−40°C to +85°C). 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 LM4040QDIM3X2.5/NOPB require an output capacitor?
No, the LM4040QDIM3X2.5/NOPB does not require an output capacitor due to its internally compensated Zener-based architecture. It remains stable with any capacitive load, eliminating external components and reducing PCB area - a key advantage over series references needing bypass caps.
What is the temperature coefficient specification for LM4040QDIM3X2.5/NOPB?
The LM4040QDIM3X2.5/NOPB has a maximum average temperature coefficient of 100 ppm/°C over −40°C to +85°C. This translates to a worst-case voltage drift of ±19 mV across its full industrial temperature range, supporting high-accuracy applications like precision data acquisition and sensor signal conditioning.
Is LM4040QDIM3X2.5/NOPB pin-compatible with other LM4040 variants in SOT-23?
Yes, LM4040QDIM3X2.5/NOPB uses the standard 3-pin SOT-23 (DBZ) package with identical pinout (Cathode–Anode–NC) as all LM4040-N/Q1 SOT-23 variants. Pin compatibility enables drop-in replacement across voltage grades (2.048V, 2.5V, 3V, etc.) and tolerance grades (A/B/C/D/E) without layout changes.
What does the 'Q' in LM4040QDIM3X2.5/NOPB signify?
The 'Q' in LM4040QDIM3X2.5/NOPB indicates AEC-Q100 qualification. Specifically, this part meets Grade 3 requirements (−40°C to +85°C ambient), including stress testing for automotive reliability, making it suitable for non-safety-critical vehicle subsystems such as cabin sensors and body electronics.
LM4040QDIM3X2.5/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):
- 2.5V
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040QDIM3X2.5/NOPB FAQ
1.How can I place an order for LM4040QDIM3X2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040QDIM3X2.5/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 LM4040QDIM3X2.5/NOPB reliable?
The price and inventory of LM4040QDIM3X2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040QDIM3X2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040QDIM3X2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040QDIM3X2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040QDIM3X2.5/NOPB?
LM4040QDIM3X2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040QDIM3X2.5/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 LM4040QDIM3X2.5/NOPB?
For technical support, including LM4040QDIM3X2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040QDIM3X2.5/NOPB requirements.
6.How does Aetrix verify that LM4040QDIM3X2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040QDIM3X2.5/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 LM4040QDIM3X2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040QDIM3X2.5/NOPB?
All LM4040QDIM3X2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040QDIM3X2.5/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 LM4040QDIM3X2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4040QDIM3X2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040QDIM3X2.5/NOPB Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
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LM4040CYM3-2.5-TR
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AZ431LBNTR-G1
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LM4040DIM3X-2.5/NOPB
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AZ431LANTR-G1
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