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Texas Instruments LM4050AEM3-8.2/NOPB
- Part No.:
- LM4050AEM3-8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050AEM3-8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,274
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Product details
Overview
LM4050AEM3-8.2/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 ±0.1% 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 and supports industrial (−40°C to +85°C) and extended (−40°C to +125°C) temperature ranges - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4050AEM3-8.2/NOPB datasheet, LM4050AEM3-8.2/NOPB pinout, LM4050AEM3-8.2/NOPB application, or LM4050AEM3-8.2/NOPB equivalent, key selection criteria include initial voltage accuracy, low dynamic impedance (0.6 Ω at 1 mA), no-output-capacitor operation, thermal hysteresis (2.3 mV), and compatibility with capacitive loads in space-constrained designs.
Technical Context
The LM4050AEM3-8.2/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its fixed 8.192 V output is set during wafer sort via fuse and Zener-zap trimming, ensuring ±0.1% accuracy at 25°C without post-package calibration.
It functions as a two-terminal shunt regulator: cathode accepts input current and sets reference voltage across external load/resistor, while anode connects to system ground. The device maintains stability with any capacitive load and requires no output capacitor - simplifying layout in battery-powered data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage - provides precise, fixed reference for 12-bit+ SAR ADCs and digital potentiometers. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - enables single-point calibration elimination in factory-trimmed sensor signal chains. |
| Temp Coefficient | 50 ppm/°C max over −40°C to +125°C - ensures ≤±4.2 mV total drift across full extended range for stable biasing. |
| Min Operating Current | 74 μA at 25°C - supports ultra-low-power wake-up circuits and energy-harvesting applications. |
| Dynamic Impedance | 0.6 Ω at 1 mA, 120 Hz - minimizes load-induced voltage shift in varying-current precision analog front-ends. |
| Wideband Noise | 150 μVrms, 10 Hz–10 kHz - meets noise floor requirements for 16-bit delta-sigma ADC reference inputs. |
| Long-Term Stability | 120 ppm after 1000 hrs - guarantees <0.1% output drift over 5-year product lifetime in sealed industrial modules. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage sensing node | Connects to supply rail through series resistor; sets reference voltage across load by sinking variable current. |
| Anode (Pin 2) | Ground reference terminal | Must be connected directly to system ground plane; serves as common return for all reference-dependent circuitry. |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or thermal pad connection required - avoids unintended parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact PCB layouts without stability-compromising bypass components. |
| Tolerates capacitive loads | Stable operation with >100 nF load capacitance - eliminates need for isolation resistors in DAC buffer interfaces. |
| Fixed 8.192 V output | Matches binary-scaled 213 mV resolution - optimizes full-scale utilization in 13-bit+ data converters. |
| Industrial & extended temp range | Validated operation from −40°C to +125°C - suitable for under-hood automotive sensors and outdoor metering hardware. |
| Low 150 μVrms noise | Preserves SNR in precision measurement paths where reference noise dominates system error budget. |
Applications
| Portable Data Loggers | Industrial Process Transmitters |
|---|---|
Use Scenario: Battery-powered environmental sensor nodes sampling temperature, pressure, and humidity at 1 Hz with 16-bit resolution. IC Role / Device Role / Timing Role: Shunt reference for SAR ADC and microcontroller VREF pin - establishes absolute scaling for digitized analog inputs. Use Value: 74 μA minimum operating current extends battery life beyond 5 years on CR2032; 50 ppm/°C TC ensures <±0.5 LSB error across −25°C to +70°C field operating range. | Use Scenario: 4–20 mA loop-powered transmitter with HART modulation, housed in IP66 enclosure for chemical plant deployment. IC Role / Device Role / Timing Role: Precision voltage reference for DAC generating loop current setpoint - defines exact 4 mA zero and 20 mA full-scale thresholds. Use Value: 120 ppm long-term stability prevents recalibration drift beyond 0.1% over 36 months; 2.3 mV thermal hysteresis avoids repeatability errors during daily thermal cycling. |
| Automotive Cabin Sensors | Medical Infusion Pump Controllers |
Use Scenario: Occupant detection and air quality monitoring module inside vehicle dashboard, operating continuously across −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Reference source for analog front-end amplifying MEMS microphone and CO₂ sensor outputs - enables ratiometric signal conditioning. Use Value: Extended −40°C to +125°C junction rating supports AEC-Q100-compliant design; ±0.1% initial tolerance reduces production test time by eliminating per-unit trim. | Use Scenario: Closed-loop flow control system delivering intravenous fluids with ±0.25% volumetric accuracy requirement. IC Role / Device Role / Timing Role: Stable reference for current-sense amplifier and motor driver feedback path - ensures consistent pump speed regulation under varying load. Use Value: 0.6 Ω dynamic impedance limits reference droop to <1 mV during 100 mA step-load transients; 150 μVrms noise contributes <0.05% of total system error budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040AIX3-8.2 | Same 8.192 V output and ±0.1% tolerance, but higher 100 μA min operating current and 200 μVrms noise. | Lacks extended −40°C to +125°C rating; qualified only to +85°C - unsuitable for under-hood automotive use. | Select when lower cost is prioritized and extended temperature operation is unnecessary. |
| ADR3482ARJZ-R7 | 8.192 V output with ±0.1% tolerance, but 120 μA min current and 10 μVp-p (0.1–10 Hz) low-frequency noise - optimized for ultra-stable DC bias. | Requires 1 μF output capacitor for stability; incompatible with no-capacitor designs. | Choose for ultra-low-drift applications where low-frequency noise dominates, and board space allows output cap. |
Compared with LM4040AIX3-8.2 and ADR3482ARJZ-R7, the LM4050AEM3-8.2/NOPB uniquely combines extended temperature support, no-capacitor operation, and lowest min operating current - making it optimal for battery-powered, space-constrained, and thermally aggressive environments.
Availability
LM4050AEM3-8.2/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial process transmitters, and automotive cabin sensors requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for LM4050AEM3-8.2/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 product line delivers micropower shunt references optimized for accuracy-critical, space-constrained applications - including portable medical devices, industrial automation, and automotive subsystems demanding AEC-Q100 qualification.
FAQ
What is the maximum operating current for LM4050AEM3-8.2/NOPB?
The LM4050AEM3-8.2/NOPB supports a maximum operating current of 15 mA, as specified in the Absolute Maximum Ratings table. This limit ensures safe power dissipation within the SOT-23 package's thermal constraints - exceeding 15 mA risks junction temperature rise beyond 150°C, potentially degrading long-term reliability. Operation at 15 mA is valid across the full −40°C to +125°C temperature range when board-mounted with standard thermal relief.
Does LM4050AEM3-8.2/NOPB require an external capacitor for stability?
No, the LM4050AEM3-8.2/NOPB does not require an external output capacitor for stability. Its internal design eliminates the need for stabilization capacitance while maintaining phase margin across all capacitive loads - a key differentiator from earlier shunt references. This feature simplifies PCB layout and reduces BOM count, especially in ultra-compact applications like wearable health monitors where board area is at a premium.
What is the thermal hysteresis specification for LM4050AEM3-8.2/NOPB?
The LM4050AEM3-8.2/NOPB exhibits 2.3 mV thermal hysteresis over the −40°C to +125°C cycle, measured as the voltage difference at 25°C before and after extreme temperature excursions. This value reflects mechanical stress relaxation in the silicon die and package interface - critical for applications requiring repeatable measurements after thermal cycling, such as field-deployed environmental sensors or recalibration-free industrial gauges.
Is LM4050AEM3-8.2/NOPB qualified for automotive applications?
The LM4050AEM3-8.2/NOPB is not AEC-Q100 qualified; that designation applies only to the LM4050-Q1 variant family. However, its extended temperature range (−40°C to +125°C) and robust construction make it suitable for non-safety-critical automotive cabin applications - e.g., infotainment sensor interfaces or HVAC controls - provided system-level qualification is performed. For ASIL-B or higher systems, TI recommends the LM4050QAIM3X8.2/NOPB instead.
How does the minimum operating current of LM4050AEM3-8.2/NOPB vary with temperature?
The LM4050AEM3-8.2/NOPB has a minimum operating current of 74 μA at 25°C, rising to 95 μA over the industrial temperature range (−40°C to +85°C) and 100 μA over the extended range (−40°C to +125°C). This increase reflects higher leakage and reduced gain at elevated temperatures - designers must ensure the series resistor allows sufficient headroom across the full operating range to maintain regulation, especially in battery-voltage-drop scenarios.
LM4050AEM3-8.2/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:
- ±0.1%
- 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
LM4050AEM3-8.2/NOPB FAQ
1.How can I place an order for LM4050AEM3-8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AEM3-8.2/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 LM4050AEM3-8.2/NOPB reliable?
The price and inventory of LM4050AEM3-8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AEM3-8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050AEM3-8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AEM3-8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AEM3-8.2/NOPB?
LM4050AEM3-8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AEM3-8.2/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 LM4050AEM3-8.2/NOPB?
For technical support, including LM4050AEM3-8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AEM3-8.2/NOPB requirements.
6.How does Aetrix verify that LM4050AEM3-8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050AEM3-8.2/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 LM4050AEM3-8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050AEM3-8.2/NOPB?
All LM4050AEM3-8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AEM3-8.2/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 LM4050AEM3-8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050AEM3-8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050AEM3-8.2/NOPB Tags
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