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Texas Instruments LM4050QBEM3X2.5/NOPB
- Part No.:
- LM4050QBEM3X2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBEM3X2.5/NOPB.pdf
- Description:
- LM4050-N-Q1 AUTOMOTIVE 50PPM/C P
- Quantity:
- Payment:
- Shipping:
Inventory:16,054
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Product details
Overview
LM4050QBEM3X2.5/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 2.5 V reverse breakdown voltage with ±0.1% initial tolerance (A-grade), 50 ppm/°C max temperature coefficient, 41 μVrms wideband noise (10 Hz–10 kHz), and operation from 65 μA to 15 mA. It serves as a compact, capacitor-free reference for ADCs, DACs, and sensor signal conditioning in portable instrumentation.
For engineers reviewing the LM4050QBEM3X2.5/NOPB datasheet, LM4050QBEM3X2.5/NOPB pinout, LM4050QBEM3X2.5/NOPB application, or LM4050QBEM3X2.5/NOPB equivalent, key selection criteria include its A-grade accuracy at 25°C, industrial/extended temperature support (−40°C to +125°C), no-output-capacitor requirement, low dynamic impedance (0.3 Ω), and thermal hysteresis of 0.7 mV over −40°C to +125°C cycling.
Technical Context
The LM4050QBEM3X2.5/NOPB employs bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation, enabling stable 2.5 V reference output across −40°C to +125°C. Its design eliminates external stabilization capacitors while maintaining stability with any capacitive load up to 10 nF.
It operates as a two-terminal device: cathode accepts input current and sets reference voltage via reverse breakdown, anode connects to ground, and pin 3 is NC. Minimum operating current is 65 μA (industrial range) and 70 μA (extended range), with maximum current limited to 15 mA per absolute ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V nominal; fixed reverse breakdown voltage, tested at 100 μA |
| Initial Tolerance | ±0.1% at 25°C (A-grade); ensures ≤±2.5 mV absolute error before temp drift |
| Temp Coefficient | ≤50 ppm/°C (max); contributes ≤±13 mV error over −40°C to +125°C |
| Noise (10 Hz–10 kHz) | 41 μVrms typical; enables high-resolution (<16-bit) analog measurements |
| Dynamic Impedance | 0.3 Ω at 1 mA, 120 Hz; maintains regulation under fast load transients |
| Operating Current Range | 65 μA to 15 mA; supports ultra-low-power battery systems and high-current biasing |
| Long-Term Stability | 120 ppm (1000 hrs); predictable aging behavior for calibration-critical applications |
Pinout & Package
SOT-23 (DBZ) package, 3-pin surface-mount, body size 2.92 mm × 1.30 mm, thermal resistance RθJA = 287°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference output node | Connects to supply via series resistor; voltage develops across this terminal relative to anode |
| Anode (Pin 2) | Reference ground return | Must be connected to system ground; defines 0 V reference point for 2.5 V output |
| NC (Pin 3) | No internal connection | Left floating; no PCB trace or solder required; not electrically bonded |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables space-constrained PCB layouts without stability-compromising external C |
| Tolerates capacitive loads | Stable with ≥10 nF load capacitance-ideal for driving ADC input filters or op-amp buffers |
| Fuse/Zener-zap voltage trim | Ensures ±0.1% initial accuracy at wafer sort, eliminating post-package calibration |
| Low quiescent current | 65 μA minimum operating current enables multi-year battery life in portable sensors |
| Extended temperature range | Rated for −40°C to +125°C junction operation-suitable for automotive under-hood and industrial control |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC and Li-ion battery supply. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.5 V reference for ADC full-scale calibration. Use Value: ±0.1% initial tolerance and 50 ppm/°C TC ensure <0.02% measurement error across operating temperature without recalibration. |
Use Scenario: Industrial PLC analog input module measuring 4–20 mA sensor loops. IC Role / Device Role / Timing Role: Precision reference for 24-bit delta-sigma ADC front-end. Use Value: 41 μVrms noise and 0.3 Ω dynamic impedance preserve ENOB >20 bits in noisy factory environments. |
| Energy Management Systems | Precision Audio Components |
Use Scenario: Smart meter voltage monitoring channel with anti-tampering detection. IC Role / Device Role / Timing Role: Reference for high-side current sense amplifier and voltage divider scaling. Use Value: 120 ppm long-term stability ensures metrology-grade accuracy over 10+ year field deployment. |
Use Scenario: Class-D amplifier feedback network requiring low-noise DC bias. IC Role / Device Role / Timing Role: Low-drift bias source for op-amp common-mode level setting. Use Value: Thermal hysteresis of only 0.7 mV prevents audible "popping" during power-up/down thermal 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 |
|---|---|---|---|
| REF3025AIDBZR | Series reference (not shunt); requires 2.5 V input, 50 μA quiescent current, 50 ppm/°C TC | Needs dedicated LDO or supply rail ≥2.5 V; unsuitable for high-side sensing or current-limited biasing | Select when board has clean 3.3 V rail and layout allows 3-pin series topology |
| ADR3425ARJZ-R7 | Series reference; 2.5 V output, ±0.1% initial accuracy, 30 ppm/°C TC, 4 μVrms noise | Lower noise but higher minimum supply voltage (2.7 V); incompatible with shunt-based current-source topologies | Prefer for ultra-low-noise signal chains where supply headroom permits series configuration |
Compared with REF3025AIDBZR and ADR3425ARJZ-R7, the LM4050QBEM3X2.5/NOPB uniquely supports shunt operation with no minimum supply voltage constraint, enables direct current-source biasing, and occupies minimal PCB area-making it optimal for space- and power-constrained 2-terminal reference designs.
Availability
LM4050QBEM3X2.5/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management applications requiring stable component supply, long-lifecycle assurance, and AEC-Q100-compliant alternatives.
Supply support for LM4050QBEM3X2.5/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 reference design and automotive-grade qualification.
The LM4050-N product line delivers micropower shunt references optimized for space-constrained, battery-operated, and high-reliability systems-including automotive, industrial, and portable test equipment-where accuracy, stability, and zero-capacitor simplicity are critical.
FAQ
What is the minimum operating current for LM4050QBEM3X2.5/NOPB across temperature?
The LM4050QBEM3X2.5/NOPB requires a minimum operating current of 65 μA over the industrial temperature range (−40°C to +85°C) and 70 μA over the extended range (−40°C to +125°C), as specified in Section 6.6 of the SNOS455G datasheet. This ensures stable 2.5 V regulation and avoids dropout into non-regulated conduction. Below this threshold, the LM4050QBEM3X2.5/NOPB output voltage deviates significantly from nominal.
Does LM4050QBEM3X2.5/NOPB require an external capacitor for stability?
No, the LM4050QBEM3X2.5/NOPB does not require an external output capacitor for stability. Its internal design tolerates any capacitive load-including ADC input filters and op-amp bypass caps-without oscillation or phase margin degradation. This eliminates board space, cost, and reliability risk associated with external stabilization components, as confirmed in the "No Output Capacitor Required" feature and functional description of the LM4050-N datasheet.
What is the thermal hysteresis specification for LM4050QBEM3X2.5/NOPB?
The LM4050QBEM3X2.5/NOPB exhibits 0.7 mV thermal hysteresis over a −40°C to +125°C temperature cycle, defined as the voltage difference measured at 25°C after exposure to −40°C versus after exposure to +125°C. This low hysteresis supports repeatable calibration in systems subject to repeated thermal cycling, such as portable test gear or automotive ECUs, and is verified per Section 6.6 of the official TI datasheet.
Is LM4050QBEM3X2.5/NOPB qualified for automotive applications?
The LM4050QBEM3X2.5/NOPB is not AEC-Q100 qualified; it belongs to the standard LM4050-N family. For automotive use, TI offers the LM4050QAIM3X2.5/NOPB (Q1 variant), which is AEC-Q100 Grade 1 qualified (−40°C to +125°C) and manufactured on an automotive-grade flow. The "Q" suffix denotes automotive qualification-absent in LM4050QBEM3X2.5/NOPB's part number-and must be explicitly selected for safety-critical vehicle systems.
How does the LM4050QBEM3X2.5/NOPB achieve ±0.1% initial accuracy?
The LM4050QBEM3X2.5/NOPB achieves ±0.1% initial accuracy (A-grade) through wafer-level fuse and Zener-zap trimming during sort testing, as documented in the "Description" section of SNOS455G. This laser-trimmed process corrects process variations before packaging, ensuring tight distribution without post-assembly calibration. The LM4050QBEM3X2.5/NOPB's 2.5 V output is guaranteed within ±2.5 mV at 25°C, validated 100% in production.
LM4050QBEM3X2.5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 41µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QBEM3X2.5/NOPB FAQ
1.How can I place an order for LM4050QBEM3X2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBEM3X2.5/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 LM4050QBEM3X2.5/NOPB reliable?
The price and inventory of LM4050QBEM3X2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBEM3X2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBEM3X2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBEM3X2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBEM3X2.5/NOPB?
LM4050QBEM3X2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBEM3X2.5/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 LM4050QBEM3X2.5/NOPB?
For technical support, including LM4050QBEM3X2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBEM3X2.5/NOPB requirements.
6.How does Aetrix verify that LM4050QBEM3X2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBEM3X2.5/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 LM4050QBEM3X2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBEM3X2.5/NOPB?
All LM4050QBEM3X2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBEM3X2.5/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 LM4050QBEM3X2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBEM3X2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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