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Texas Instruments LM4030CMFX-2.5/NOPB
- Part No.:
- LM4030CMFX-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4030CMFX-2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 0.15% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,943
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Product details
Overview
LM4030CMFX-2.5/NOPB from Texas Instruments is an ultra-high precision shunt voltage reference delivering 2.5 V output with ±0.15% initial accuracy (C-grade), 30 ppm/°C temperature coefficient over −40°C to +125°C, and 75 ppm thermal hysteresis - used in high-resolution ADC biasing, precision sensor excitation, and calibration-critical industrial data acquisition systems.
For engineers reviewing the LM4030CMFX-2.5/NOPB datasheet, LM4030CMFX-2.5/NOPB pinout, LM4030CMFX-2.5/NOPB application, or LM4030CMFX-2.5/NOPB equivalent, this page delivers verified package mapping, confirmed SOT-23-5 terminal roles, grade-specific stability metrics, and real-world design implications for low-drift analog signal chains.
Technical Context
The LM4030CMFX-2.5/NOPB operates as a two-terminal shunt reference requiring only a series current-setting resistor (RZ) and optionally a bypass capacitor (COUT ≤10 µF). Its regulation relies on internal bandgap-derived Zener-like breakdown at precisely 2.5 V, with dynamic offset cancellation minimizing drift from PCB stress and thermal cycling.
It exhibits reverse dynamic impedance inversely proportional to shunt current (e.g., ~0.3 Ω at 10 mA), enabling high PSRR against supply ripple and EMI. The device sustains continuous 30 mA shunt current and handles 50 mA transients while consuming as little as 120 µA minimum operating current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V nominal; fixed value, no external adjustment required |
| Initial Accuracy | ±0.15% (C-grade); ensures ≤±3.75 mV absolute error at 25°C |
| Temp Coefficient | 30 ppm/°C max (−40°C to +125°C); contributes ≤±90 ppm (±0.225 mV) over full range |
| Thermal Hysteresis | 75 ppm typical; ≤±0.188 mV shift after −40°C ↔ +125°C cycling |
| Long-Term Stability | 40 ppm (1000 hrs @ 30°C); ≤±0.1 mV drift under continuous operation |
| Min Operating Current | 120 µA; sets lower bound for RZ sizing to guarantee regulation |
| Max Continuous Shunt | 30 mA; defines upper power dissipation limit (75 mW @ 2.5 V) |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm body, gull-wing leads, RoHS-compliant matte tin lead finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (N/C) | Must be left floating; no internal connection |
| 2 | GND or N/C | Functional ground pin; if unused, leave floating per datasheet |
| 3 | No Connect (N/C) | Must be left floating; no internal connection |
| 4 | VREF | 2.5 V reference output node; connects to load and feedback path |
| 5 | GND | Primary ground reference; must be low-impedance return path for shunt current |
Key Features
| Feature | Design Value |
|---|---|
| High Immunity to Board Stress | Dynamic offset cancellation maintains accuracy despite PCB warpage and thermal cycling effects |
| No External Capacitor Required | Stable operation without COUT; optional up to 10 µF improves transient response and broadband noise |
| Low Output Noise | 105 µVPP (0.1–10 Hz); enables sub-16-bit resolution in precision measurement front-ends |
| Extended Temperature Range | −40°C to +125°C junction operation; qualified for automotive under-hood and industrial control environments |
| High Transient Tolerance | Withstands 50 mA <1 s surges; supports robust startup and fault-recovery in regulated systems |
Applications
| Data Acquisition Systems | Industrial Sensor Conditioning |
|---|---|
|
Use Scenario: High-resolution (≥16-bit) SAR or delta-sigma ADC reference in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 2.5 V reference for ADC VREF pin and sensor bridge excitation. Use Value: 30 ppm/°C TC and 75 ppm hysteresis ensure <±0.01% full-scale error across ambient temperature swings in factory-floor environments. |
Use Scenario: Precision RTD or strain-gauge bridge excitation in weigh scales and pressure transmitters. IC Role / Device Role / Timing Role: Low-noise, low-drift 2.5 V bias source for ratiometric measurement circuits. Use Value: 105 µVPP low-frequency noise prevents degradation of effective resolution in microvolt-level bridge outputs. |
| Automotive Calibration Equipment | Portable Test & Measurement |
|
Use Scenario: On-board diagnostic (OBD-II) calibration reference in handheld engine analyzers. IC Role / Device Role / Timing Role: Stable reference for DAC-based stimulus generation and sensor simulation circuitry. Use Value: 40 ppm long-term stability ensures calibration validity over 1000+ hours of field use without recalibration. |
Use Scenario: Battery-powered multimeter or portable oscilloscope reference subsystem. IC Role / Device Role / Timing Role: Ultra-low-quiescent shunt reference enabling 120 µA minimum operation from coin-cell supplies. Use Value: Enables >1-year battery life while maintaining ±0.15% accuracy across storage and operational temperature cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040C25IDBZR | 2.5 V, ±0.5% initial accuracy, 100 ppm/°C TC, SOT-23-3, 30 mA max | Lower accuracy and stability; lacks dynamic offset cancellation | Select when cost sensitivity outweighs precision requirements; verify layout-induced drift in production |
| REF3025AIDBZR | 2.5 V, ±0.2% initial accuracy, 50 ppm/°C TC, SOT-23-3, 25 mA max, series topology | Series architecture requires higher dropout voltage; not a drop-in replacement | Choose only if system supply margin allows ≥100 mV headroom; incompatible pinout and biasing |
Compared with LM4040C25IDBZR and REF3025AIDBZR, the LM4030CMFX-2.5/NOPB delivers superior thermal hysteresis (75 ppm vs ≥150 ppm) and board-stress immunity - critical for field-deployed instrumentation where mechanical reliability impacts calibration integrity.
Availability
LM4030CMFX-2.5/NOPB is available at Aetrix Electronics and suitable for industrial sensor conditioning, portable test equipment, and automotive calibration systems requiring stable component supply with guaranteed long-term availability.
Supply support for LM4030CMFX-2.5/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 specializing in analog and embedded processing technologies, with decades of expertise in precision voltage references and industrial-grade signal-chain components.
The LM4030 product line was designed specifically for high-accuracy, low-drift applications in harsh environments - targeting data acquisition, sensor excitation, and calibration-critical systems where long-term stability and thermal resilience are non-negotiable.
FAQ
What is the exact output voltage tolerance of LM4030CMFX-2.5/NOPB at 25°C?
The LM4030CMFX-2.5/NOPB is the C-grade variant with ±0.15% initial accuracy at 25°C, corresponding to a guaranteed output voltage range of 2.49625 V to 2.50375 V when tested at TJ = 25°C with ISHUNT = 120 µA. This tolerance is production-tested and specified in the Electrical Characteristics table of the SNVS552B datasheet.
Does LM4030CMFX-2.5/NOPB require an external capacitor to operate stably?
No, the LM4030CMFX-2.5/NOPB is internally compensated and operates stably without any external capacitor. A bypass capacitor (COUT) up to 10 µF may be added to improve transient response and reduce broadband noise, but it is optional - not required for basic regulation functionality.
What is the maximum continuous shunt current rating for LM4030CMFX-2.5/NOPB?
The LM4030CMFX-2.5/NOPB supports a maximum continuous shunt current of 30 mA, as specified in the Operating Ratings section. Exceeding this limit risks exceeding the 350 mW absolute maximum power dissipation (at TA = 25°C) and may cause thermal shutdown or long-term reliability degradation.
How does thermal hysteresis impact system calibration when using LM4030CMFX-2.5/NOPB?
Thermal hysteresis of 75 ppm means the LM4030CMFX-2.5/NOPB's output voltage at 25°C may shift by up to ±0.188 mV after cycling between −40°C and +125°C eight times. In calibration-critical systems, this limits repeatability unless compensated - making it essential for metrology-grade instruments to perform post-thermal-cycle recalibration if sub-100 ppm accuracy is required.
Can LM4030CMFX-2.5/NOPB be used in place of LM4030AMFX-2.5/NOPB in a new design?
Yes, the LM4030CMFX-2.5/NOPB is pin-compatible and functionally identical to the A- and B-grade variants, differing only in initial accuracy (±0.15% vs ±0.05%/±0.10%) and temperature coefficient (30 ppm/°C vs 10/20 ppm/°C). It can be substituted directly, but system-level accuracy verification is required to confirm suitability for the target application's drift budget.
LM4030CMFX-2.5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- 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:
- 30 mA
- Tolerance:
- ±0.15%
- Temperature Coefficient:
- 30ppm/°C
- Noise - 0.1Hz to 10Hz:
- 105µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 120 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4030CMFX-2.5/NOPB FAQ
1.How can I place an order for LM4030CMFX-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4030CMFX-2.5/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 LM4030CMFX-2.5/NOPB reliable?
The price and inventory of LM4030CMFX-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4030CMFX-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4030CMFX-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4030CMFX-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4030CMFX-2.5/NOPB?
LM4030CMFX-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4030CMFX-2.5/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 LM4030CMFX-2.5/NOPB?
For technical support, including LM4030CMFX-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4030CMFX-2.5/NOPB requirements.
6.How does Aetrix verify that LM4030CMFX-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4030CMFX-2.5/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 LM4030CMFX-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4030CMFX-2.5/NOPB?
All LM4030CMFX-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4030CMFX-2.5/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 LM4030CMFX-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4030CMFX-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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