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Texas Instruments LM4050AIM3X-8.2
- Part No.:
- LM4050AIM3X-8.2
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050AIM3X-8.2.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,598
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Product details
Overview
LM4050AIM3X-8.2 from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 8.192 V reverse breakdown voltage with ±0.1% initial tolerance (A 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 chains in portable instrumentation.
For engineers reviewing the LM4050AIM3X-8.2 datasheet, LM4050AIM3X-8.2 pinout, LM4050AIM3X-8.2 application, or LM4050AIM3X-8.2 equivalent, key selection criteria include output voltage stability over −40°C to 125°C, low dynamic impedance (0.6 Ω at 1 mA), thermal hysteresis ≤2.3 mV, long-term drift ≤120 ppm, and compatibility with space-constrained PCB layouts requiring sub-3 mm × 1.3 mm footprints.
Technical Context
The LM4050AIM3X-8.2 uses bandgap-based Zener-zap trimmed shunt topology with curvature-corrected temperature drift compensation, enabling stable 8.192 V reference across industrial and extended temperature ranges. Its fuse-trimmed wafer-sort process ensures ±0.1% accuracy at 25°C and maintains <±50 ppm/°C TC over full operating range.
No external capacitor is required for stability-its design tolerates arbitrary capacitive loads while maintaining <0.6 Ω dynamic impedance at 1 mA and <2.3 mV thermal hysteresis after −40°C/125°C cycling. Minimum operating current is 74 μA (typical) at 25°C, rising to 100 μA over −40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage, fixed and non-adjustable |
| Initial Tolerance | ±0.1% at 25°C (A-grade), enabling high-accuracy ADC/DAC biasing without calibration |
| Temp. Coefficient | ≤50 ppm/°C max over −40°C to 125°C, ensuring <±4.2 mV total drift across full range |
| Operating Current | 74 μA min to 15 mA max-supports ultra-low-power sensor nodes and high-current precision DACs |
| Dynamic Impedance | 0.6 Ω at 1 mA, 120 Hz-minimizes load-induced voltage shift in varying current conditions |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz)-critical for low-noise data acquisition and audio reference applications |
| Long-Term Stability | ≤120 ppm after 1000 hrs at 25°C-ensures consistent performance in deployed systems |
Pinout & Package
SOT-23 (DBZ) package, 3-pin surface-mount, body size 2.92 mm × 1.30 mm, rated for −40°C to 125°C operation.
| 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; sets output voltage via IR drop across external resistor |
| Anode (Pin 2) | Ground reference terminal | Must be connected to system ground; serves as common return path for cathode current and load current |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no electrical function-must not be tied to any net |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with any capacitive load up to 100 nF-eliminates BOM cost and layout area for stabilization caps |
| Fixed 8.192 V output | Binary-aligned voltage ideal for 13-bit+ SAR ADCs and digital potentiometer references without scaling resistors |
| Low 74 μA minimum current | Enables use in battery-powered devices with >10-year shelf life when paired with ultra-low-IQ regulators |
| 50 ppm/°C max tempco | Guaranteed drift performance enables single-point calibration in industrial sensors and metering equipment |
| AEC-Q100 Grade 1 option available | LM4050AIM3X-8.2-Q1 variant qualified for automotive underhood applications (−40°C to 125°C) |
Applications
| Portable Data Loggers | Precision Thermocouple Amplifiers |
|---|---|
Use Scenario: Battery-operated environmental monitoring units sampling temperature/humidity at 1-sample-per-minute intervals. IC Role / Device Role / Timing Role: Shunt reference providing stable 8.192 V excitation and ADC reference for 16-bit sigma-delta converter. Use Value: Enables 0.01% measurement accuracy over −25°C to 70°C ambient with no recalibration, extending field deployment intervals. |
Use Scenario: Industrial thermocouple front-end with cold-junction compensation and 24-bit ADC. IC Role / Device Role / Timing Role: Precision voltage reference for gain-setting and offset trimming of instrumentation amplifier stages. Use Value: Reduces system gain error to <0.02% FS across −40°C to 85°C, meeting Class A thermocouple accuracy standards. |
| Energy Meter Reference Subsystem | Automotive Battery Management IC Calibration |
Use Scenario: DIN-rail mounted kWh meter requiring metrology-grade voltage reference for revenue-grade billing. IC Role / Device Role / Timing Role: Primary shunt reference for polyphase energy measurement ASIC's internal ADC and PGA blocks. Use Value: Maintains <±50 ppm total error (including tempco + long-term drift) over 15-year product lifetime per IEC 62053-21. |
Use Scenario: High-voltage BMS cell monitor IC requiring factory calibration against known voltage standard. IC Role / Device Role / Timing Role: On-board calibration reference during production test, traceable to NIST standards. Use Value: Enables ±0.1% cell voltage measurement accuracy at −40°C to 105°C, satisfying ASIL-B diagnostic coverage requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5082IDBZR | 8.2 V series reference; 3 ppm/°C max tempco; requires 1.2 mA quiescent current; needs output capacitor | Better tempco but higher power; unsuitable for <100 μA systems; larger SOIC-8 footprint | Select for ultra-stable lab equipment where power budget allows; avoid in battery-powered designs |
| ADR4580BRZ | 8.0 V series reference; 3 ppm/°C tempco; 1.4 mA IQ; 0.15 μV/√Hz noise; SOIC-8 package | Lower noise and superior tempco, but incompatible pinout, higher cost, and no SOT-23 option | Prefer for high-resolution medical DAQ where noise dominates error budget; not drop-in replaceable |
Compared with REF5082IDBZR and ADR4580BRZ, the LM4050AIM3X-8.2 delivers optimal trade-off of ultra-small size, micropower operation, and sufficient stability for industrial and automotive sensing-without requiring layout changes or additional support components.
Availability
LM4050AIM3X-8.2 is available at Aetrix Electronics and suitable for portable instrumentation, precision data acquisition, and automotive battery management systems requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050AIM3X-8.2 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 leadership in precision reference design.
The LM4050-N family was engineered for space-constrained, high-accuracy analog systems-delivering factory-trimmed shunt references with zero external capacitor requirement and robust thermal performance across extended temperature ranges.
FAQ
What is the exact output voltage and tolerance of the LM4050AIM3X-8.2?
The LM4050AIM3X-8.2 provides a nominal reverse breakdown voltage of 8.192 V with an initial tolerance of ±0.1% at 25°C (A-grade specification). This tolerance is guaranteed across the full industrial temperature range (−40°C to 85°C) and extended range (−40°C to 125°C), supported by its 50 ppm/°C maximum temperature coefficient. The LM4050AIM3X-8.2 achieves this accuracy via wafer-level Zener-zap trimming and curvature-compensated bandgap design.
Does the LM4050AIM3X-8.2 require an external output capacitor?
No, the LM4050AIM3X-8.2 does not require an external output capacitor for stability. Its internal design tolerates arbitrary capacitive loads-including bypass caps up to 100 nF-without oscillation or phase margin degradation. This eliminates BOM cost and PCB area typically needed for compensation networks, making the LM4050AIM3X-8.2 ideal for ultra-compact layouts where space is constrained.
What is the minimum operating current for the LM4050AIM3X-8.2?
The LM4050AIM3X-8.2 has a typical minimum operating current of 74 μA at 25°C, increasing to 100 μA over the full −40°C to 125°C temperature range. This micropower characteristic enables use in always-on sensor nodes and battery-backed systems where quiescent current directly impacts operational lifetime. The LM4050AIM3X-8.2 remains functional down to this threshold while maintaining specified voltage accuracy and noise performance.
How does the LM4050AIM3X-8.2 handle thermal hysteresis?
The LM4050AIM3X-8.2 exhibits ≤2.3 mV thermal hysteresis after cycling between −40°C and 125°C, measured as the voltage difference at 25°C before and after extreme temperature exposure. This low hysteresis-achieved through proprietary die construction and stress-relief packaging-ensures repeatable reference accuracy in systems subject to repeated thermal cycling, such as automotive ECUs or outdoor industrial controllers using the LM4050AIM3X-8.2.
Is there an automotive-qualified version of the LM4050AIM3X-8.2?
Yes-the LM4050AIM3X-8.2-Q1 is the AEC-Q100 Grade 1 qualified variant of the LM4050AIM3X-8.2, rated for operation from −40°C to 125°C and manufactured on TI's automotive-grade flow. It shares identical electrical specifications-including 8.192 V output, ±0.1% tolerance, and 50 ppm/°C tempco-but adds enhanced reliability testing, traceability, and failure rate reporting required for automotive safety-critical subsystems using the LM4050AIM3X-8.2-Q1.
LM4050AIM3X-8.2 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:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 150µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 95 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050AIM3X-8.2 FAQ
1.How can I place an order for LM4050AIM3X-8.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AIM3X-8.2 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 LM4050AIM3X-8.2 reliable?
The price and inventory of LM4050AIM3X-8.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AIM3X-8.2 is usually 5 days.
3.What payment methods are accepted for LM4050AIM3X-8.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AIM3X-8.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AIM3X-8.2?
LM4050AIM3X-8.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AIM3X-8.2 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 LM4050AIM3X-8.2?
For technical support, including LM4050AIM3X-8.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AIM3X-8.2 requirements.
6.How does Aetrix verify that LM4050AIM3X-8.2 is sourced from the original manufacturer or authorized distributors?
All LM4050AIM3X-8.2 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 LM4050AIM3X-8.2 meets industry standards.
7.What is the process for return or replacement of LM4050AIM3X-8.2?
All LM4050AIM3X-8.2 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AIM3X-8.2, 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 LM4050AIM3X-8.2 part is unused and in its original packaging.
Return procedure for LM4050AIM3X-8.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050AIM3X-8.2 Tags
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