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Texas Instruments LM4050BEM3-8.2/NOPB
- Part No.:
- LM4050BEM3-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BEM3-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,956
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Product details
Overview
LM4050BEM3-8.2/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 8.192 V reverse breakdown voltage with ±0.2% initial tolerance (B grade), 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz). It operates from 74 μA to 15 mA, supports capacitive loads without external compensation, and targets high-accuracy analog signal conditioning in portable instrumentation.
For engineers reviewing the LM4050BEM3-8.2/NOPB datasheet, LM4050BEM3-8.2/NOPB pinout, LM4050BEM3-8.2/NOPB application, or LM4050BEM3-8.2/NOPB equivalent, key selection criteria include its 8.192 V nominal output, B-grade accuracy, industrial/extended temperature range support (−40°C to +125°C), no-output-capacitor operation, and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4050BEM3-8.2/NOPB uses bandgap-based Zener-zap trimmed shunt regulation with curvature-corrected temperature drift compensation, enabling stable 8.192 V reference across −40°C to +125°C. Its dynamic impedance remains ≤0.6 Ω at 1 mA, ensuring minimal load-induced voltage shift.
It requires no external capacitor for stability and tolerates unlimited capacitive loading-unlike series references-making it ideal for low-noise ADC biasing and DAC reference buffering where layout simplicity and supply rejection matter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage, fixed and factory-trimmed |
| Initial Tolerance | ±0.2% at 25°C (B grade), enabling <±16.4 mV absolute error before temp drift |
| Temp Coefficient | ≤50 ppm/°C max over −40°C to +125°C, contributing <±41.6 mV error across full range |
| Operating Current | 74 μA min to 15 mA max-supports ultra-low-power sensor nodes and high-current buffer stages |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz), suitable for 16-bit+ data acquisition systems |
| Dynamic Impedance | 0.6 Ω typical at 1 mA, minimizing load-regulation error (<1.5 mV at 2.5 mA ΔI) |
| Long-Term Stability | 120 ppm after 1000 hrs, critical for calibration-critical field-deployed equipment |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Thermal resistance RθJA = 287°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference output node | Connects to regulated voltage rail; sinks all load + reference current; voltage referenced to Anode |
| Anode (Pin 2) | Common return / ground reference | Must be connected to system ground or lowest potential node; defines 0 V reference for cathode voltage |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no routing or soldering required-reduces layout complexity |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Eliminates BOM cost and board area for stabilization cap-enables direct use with high-C ADC inputs |
| Tolerates capacitive loads | Stable into any value of capacitance (including >10 μF), simplifying filtering and decoupling design |
| Fuse/Zener-zap voltage trim | Ensures ±0.2% initial accuracy at wafer sort-no post-package calibration needed |
| Low quiescent current | 74 μA minimum operating current enables battery life extension in always-on monitoring circuits |
| Industrial & automotive temp range | Specified from −40°C to +125°C-valid for under-hood and industrial control environments |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC requiring stable excitation and reference. IC Role / Device Role / Timing Role: Shunt reference providing precise 8.192 V for ADC VREF and sensor excitation. Use Value: Enables 16-bit effective resolution by limiting reference drift to <±42 mV over full temperature range. |
Use Scenario: Modular DAQ module measuring thermocouple and RTD signals in lab equipment. IC Role / Device Role / Timing Role: Primary voltage reference for programmable gain instrumentation amplifier and ADC front-end. Use Value: 150 μVrms noise and 0.6 Ω dynamic impedance prevent SNR degradation in sub-100 μV signal chains. |
| Energy Management Meters | Precision Audio Components |
Use Scenario: DIN-rail energy meter with isolated metrology SoC and anti-tampering monitoring. IC Role / Device Role / Timing Role: Calibration reference for on-chip ADC and auxiliary analog monitors. Use Value: 120 ppm long-term stability ensures metrology accuracy compliance over 10-year field deployment. |
Use Scenario: High-fidelity DAC output stage requiring ultra-low-noise, low-drift DC bias. IC Role / Device Role / Timing Role: Shunt reference generating clean 8.192 V for op-amp bias networks and I/V conversion. Use Value: No-output-capacitor operation avoids capacitor ESR-induced distortion in audio signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040B82IDCKR | Same 8.192 V output, ±0.2% tolerance, but higher 200 μVrms noise and 100 μA min current | Limited to industrial temp (−40°C to +85°C); not qualified for extended range | Prefer LM4050BEM3-8.2/NOPB when extended temperature operation or lower noise is required |
| ADR3480ARJZ-R7 | 8.0 V output (not 8.192 V), ±0.1% A-grade tolerance, 12 ppm/°C typical drift, series topology | Requires input headroom (~1.4 V), needs output capacitor, larger SOT-23-5 footprint | Select LM4050BEM3-8.2/NOPB for exact 8.192 V matching, shunt topology simplicity, and SOT-23-3 footprint |
Compared with LM4040B82IDCKR and ADR3480ARJZ-R7, the LM4050BEM3-8.2/NOPB uniquely delivers exact 8.192 V output in a 3-pin SOT-23 with no capacitor requirement, lower noise, and full −40°C to +125°C qualification-making it optimal for metrology and portable precision analog designs where voltage match and layout efficiency are critical.
Availability
LM4050BEM3-8.2/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, energy metering, and precision data acquisition systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4050BEM3-8.2/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 specializing in analog and embedded processing technologies, with decades of expertise in precision reference design and high-reliability manufacturing.
The LM4050-N family was engineered for space-constrained, high-accuracy analog systems-delivering micropower shunt references with factory-trimmed voltage, low drift, and robust capacitive-load stability across industrial and automotive environments.
FAQ
What is the exact nominal output voltage of the LM4050BEM3-8.2/NOPB?
The LM4050BEM3-8.2/NOPB has a nominal reverse breakdown voltage of 8.192 V, confirmed in Section 6.9 of the official TI datasheet (SNOS455G). This value is fixed and factory-trimmed using Zener-zap technology, and applies specifically to the "8.2" variant designation in the part number.
Does the LM4050BEM3-8.2/NOPB require an external output capacitor?
No-the LM4050BEM3-8.2/NOPB is explicitly designed to operate stably without any external output capacitor, as stated in the Features section and validated in the Functional Description. It tolerates unlimited capacitive loading, eliminating capacitor-related BOM cost, footprint, and reliability concerns.
What is the minimum operating current for the LM4050BEM3-8.2/NOPB at 25°C?
Per Section 6.9 of the TI datasheet, the LM4050BEM3-8.2/NOPB requires a minimum operating current of 74 μA at 25°C. This value increases slightly over temperature, reaching 95 μA in the industrial range and 100 μA in the extended −40°C to +125°C range.
Is the LM4050BEM3-8.2/NOPB qualified for automotive applications?
No-the LM4050BEM3-8.2/NOPB is part of the LM4050-N industrial-grade family. For automotive use, TI offers the LM4050-N-Q1 series (e.g., LM4050BEM3-8.2Q1), which is AEC-Q100 Grade 1 qualified. The /NOPB suffix confirms commercial-industrial qualification only.
What does the 'B' grade signify in LM4050BEM3-8.2/NOPB?
The 'B' in LM4050BEM3-8.2/NOPB denotes ±0.2% initial reverse breakdown voltage tolerance at 25°C, as defined in the Electrical Characteristics tables. This is tighter than the C grade (±0.5%) and looser than the A grade (±0.1%), balancing accuracy and cost for mid-tier precision applications.
LM4050BEM3-8.2/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:
- Active
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BEM3-8.2/NOPB FAQ
1.How can I place an order for LM4050BEM3-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BEM3-8.2/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 LM4050BEM3-8.2/NOPB reliable?
The price and inventory of LM4050BEM3-8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BEM3-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050BEM3-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BEM3-8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BEM3-8.2/NOPB?
LM4050BEM3-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BEM3-8.2/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 LM4050BEM3-8.2/NOPB?
For technical support, including LM4050BEM3-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BEM3-8.2/NOPB requirements.
6.How does Aetrix verify that LM4050BEM3-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050BEM3-8.2/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 LM4050BEM3-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050BEM3-8.2/NOPB?
All LM4050BEM3-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BEM3-8.2/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 LM4050BEM3-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050BEM3-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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