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Texas Instruments LM4050QBEM3X8.2/NOPB
- Part No.:
- LM4050QBEM3X8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBEM3X8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,488
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Product details
Overview
LM4050QBEM3X8.2/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 8.192 V reverse breakdown voltage with ±0.1% (A-grade) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz). It operates from 74 μA to 15 mA over −40°C to 125°C and requires no output capacitor.
For engineers reviewing the LM4050QBEM3X8.2/NOPB datasheet, LM4050QBEM3X8.2/NOPB pinout, LM4050QBEM3X8.2/NOPB application, or LM4050QBEM3X8.2/NOPB equivalent, this device serves as a stable, low-drift, space-constrained reference for high-resolution ADCs, battery-powered instrumentation, and automotive-grade sensing systems where tight voltage accuracy and thermal stability are critical.
Technical Context
The LM4050QBEM3X8.2/NOPB implements a curvature-corrected bandgap architecture with Zener-zap trim at wafer sort to achieve ±0.1% initial accuracy. Its internal compensation enables stable operation without external capacitors while tolerating arbitrary capacitive loads.
It functions as a two-terminal shunt regulator: cathode draws current (74–15,000 μA) to maintain 8.192 V across anode-to-cathode, with dynamic impedance of 0.6 Ω at 1 mA and thermal hysteresis of 2.3 mV after −40°C/125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage - sets LSB = 2 mV for 12-bit ADCs operating from ≥10 V supplies. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - ensures ≤±8.2 mV absolute error before temperature or aging effects. |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C - contributes ≤±410 μV/°C drift across full range, enabling <0.05% total error in industrial environments. |
| Noise (10 Hz–10 kHz) | 150 μVrms typical at 150 μA - supports 16-bit+ resolution in precision data acquisition without added filtering. |
| Operating Current | 74 μA min / 15 mA max - allows ultra-low-power operation in battery systems while supporting >10 mA load regulation. |
| Thermal Hysteresis | 2.3 mV - quantifies voltage shift after thermal cycling; critical for repeatable calibration in field-deployed test equipment. |
| Dynamic Impedance | 0.6 Ω at 1 mA - ensures <1 mV output shift per 1 mA load transients, improving regulation in dynamic sensor interfaces. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with exposed die attach pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input and voltage reference node | Connects to supply via series resistor; carries total current (IQ + IL) and defines regulated output voltage relative to anode. |
| Anode (Pin 2) | Reference ground return | Must be tied to system ground; serves as common reference point for all voltage measurements and load connections. |
| NC (Pin 3) | No internal connection | Left floating or tied to Pin 2 in EMI-sensitive layouts; avoids parasitic Schottky conduction between anode and die attach interface. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 8.192 V output | Enables exact 2 mV/LSB scaling for 12-bit converters on 10 V+ rails-eliminates trimming resistors and layout sensitivity. |
| No output capacitor required | Internally compensated design removes need for external stabilization, reducing BOM count and PCB area in space-constrained modules. |
| Tolerates capacitive loads | Stable with any value or type of output capacitance-simplifies filtering for noise-sensitive analog front-ends without phase-margin analysis. |
| AEC-Q100 Grade 1 qualified | Validated for automotive ambient temperatures (−40°C to 125°C) and reliability stress testing-suitable for ADAS sensor references and powertrain monitoring. |
| Low micropower operation | 74 μA minimum cathode current enables multi-year battery life in portable metering and IoT edge nodes with intermittent wake-up cycles. |
Applications
| Battery-Powered Precision Meters | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeters and portable energy analyzers operating from coin-cell or Li-ion batteries with 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 8.192 V reference for ADC full-scale calibration and ratiometric sensor excitation. Use Value: Enables 2 mV/LSB resolution without gain calibration; 150 μVrms noise preserves effective number of bits (ENOB > 15.2) under battery-voltage droop. |
Use Scenario: Front-end signal conditioning for pressure, temperature, and position sensors in engine control units and battery management systems. IC Role / Device Role / Timing Role: Precision reference for analog sensor amplifiers and ADCs requiring AEC-Q100 compliance and −40°C to 125°C operation. Use Value: 50 ppm/°C tempco and 2.3 mV thermal hysteresis ensure <0.03% reference drift over vehicle lifetime-critical for emission compliance and safety-critical diagnostics. |
| Industrial Process Transmitters | High-Accuracy Data Acquisition Systems |
Use Scenario: 4–20 mA loop-powered field transmitters measuring flow, level, or pH in chemical plants and refineries. IC Role / Device Role / Timing Role: Stable shunt reference powering transmitter circuitry and setting DAC output scale for current-loop modulation. Use Value: 74 μA min operating current allows operation down to 3.3 V supply; ±0.1% initial tolerance eliminates field recalibration during commissioning. |
Use Scenario: Modular DAQ cards for lab automation and automated test equipment with 12–16 bit resolution and multi-channel synchronization. IC Role / Device Role / Timing Role: Primary voltage reference for simultaneous-sampling ADCs, driving reference buffers and anti-alias filters. Use Value: 0.6 Ω dynamic impedance minimizes crosstalk-induced reference perturbation across channels; no-output-capacitor design simplifies layout for high-density boards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040C82IDCKR | 8.192 V, ±0.5% initial tolerance, 100 ppm/°C max tempco, SOT-23, 60 μA min current | Lower accuracy and higher drift; suitable for non-critical biasing but not 12-bit+ metrology | Select when cost sensitivity outweighs precision requirements and thermal stability is secondary. |
| ADR3480ARJZ-R7 | 8.000 V, ±0.1% initial tolerance, 20 ppm/°C max tempco, SOT-23, 120 μA min current | Different nominal voltage (8.000 V vs. 8.192 V); tighter tempco but higher quiescent current and no AEC-Q100 qualification | Choose for lower-drift applications where exact 8.192 V is not required and automotive qualification is unnecessary. |
Compared with LM4040C82IDCKR, LM4050QBEM3X8.2/NOPB delivers 5× better initial accuracy and half the temperature drift-essential for calibrated instruments. Against ADR3480ARJZ-R7, it trades 0.192 V voltage offset for AEC-Q100 compliance and 46 μA lower minimum current, making it preferable in automotive and ultra-low-power designs despite slightly higher noise.
Availability
LM4050QBEM3X8.2/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor interfaces, and industrial process transmitters requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LM4050QBEM3X8.2/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 designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.
The LM4050-N product line delivers precision shunt voltage references optimized for space-constrained, low-power, and high-accuracy applications-including automotive-grade variants qualified to AEC-Q100 Grade 1 standards.
FAQ
What is the minimum operating current for LM4050QBEM3X8.2/NOPB?
The LM4050QBEM3X8.2/NOPB requires a minimum cathode current of 74 μA at 25°C and 95 μA across the full −40°C to 125°C industrial range to maintain regulation. This low threshold enables use in energy-harvesting and coin-cell-powered systems where supply current budgets are tightly constrained. The LM4050QBEM3X8.2/NOPB remains functional down to this current while holding 8.192 V within its specified tolerance band.
Is LM4050QBEM3X8.2/NOPB qualified for automotive applications?
Yes, LM4050QBEM3X8.2/NOPB is AEC-Q100 Grade 1 qualified, meaning it is tested and certified for operation from −40°C to 125°C ambient temperature and meets automotive reliability stress requirements. This makes the LM4050QBEM3X8.2/NOPB suitable for engine control, battery monitoring, and ADAS sensor signal chains where extended temperature performance and long-term stability are mandatory.
Does LM4050QBEM3X8.2/NOPB require an output capacitor?
No, LM4050QBEM3X8.2/NOPB is internally compensated and does not require an output capacitor for stability. It remains stable with any capacitive load-including large ceramic or tantalum bypass caps-eliminating layout constraints and reducing bill-of-materials. An optional capacitor may be added for additional noise filtering, but it is never necessary for basic regulation.
What is the thermal hysteresis specification for LM4050QBEM3X8.2/NOPB?
The LM4050QBEM3X8.2/NOPB exhibits 2.3 mV thermal hysteresis-the voltage shift measured at 25°C after cycling between −40°C and 125°C. This parameter reflects mechanical stress-induced drift in the package and die interface, and is critical for applications requiring repeatable calibration, such as portable test equipment and field-deployed sensors where environmental temperature history affects measurement fidelity. The LM4050QBEM3X8.2/NOPB's value is specified and tested per JEDEC JESD22-A107.
How does LM4050QBEM3X8.2/NOPB differ from the standard LM4050-N series?
The LM4050QBEM3X8.2/NOPB is the automotive-grade (Q1) variant of the LM4050-N family, distinguished by AEC-Q100 Grade 1 qualification, extended −40°C to 125°C operation, and manufacturing on an automotive-grade process flow. Electrically, it shares identical specifications with the industrial LM4050AEM3X8.2/NOPB-same 8.192 V output, ±0.1% tolerance, 150 μVrms noise, and SOT-23 package-but adds traceability, screening, and reliability validation required for automotive deployment. The LM4050QBEM3X8.2/NOPB is not a drop-in replacement for non-Q1 versions in safety-critical systems without requalification.
LM4050QBEM3X8.2/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:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 8.192V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 150µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 100 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QBEM3X8.2/NOPB FAQ
1.How can I place an order for LM4050QBEM3X8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBEM3X8.2/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 LM4050QBEM3X8.2/NOPB reliable?
The price and inventory of LM4050QBEM3X8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBEM3X8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBEM3X8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBEM3X8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBEM3X8.2/NOPB?
LM4050QBEM3X8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBEM3X8.2/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 LM4050QBEM3X8.2/NOPB?
For technical support, including LM4050QBEM3X8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBEM3X8.2/NOPB requirements.
6.How does Aetrix verify that LM4050QBEM3X8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBEM3X8.2/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 LM4050QBEM3X8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBEM3X8.2/NOPB?
All LM4050QBEM3X8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBEM3X8.2/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 LM4050QBEM3X8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBEM3X8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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