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Texas Instruments LM4050AEM3-10/NOPB
- Part No.:
- LM4050AEM3-10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050AEM3-10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,926
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Product details
Overview
LM4050AEM3-10/NOPB from Texas Instruments is a precision micropower shunt voltage reference with 10 V nominal reverse breakdown voltage, ±0.1% initial tolerance (A grade), 50 ppm/°C max temperature coefficient, and 100 μA minimum operating current. It operates across −40°C to 125°C, delivers stable output without external capacitor, and serves as a high-accuracy voltage reference in ADC biasing, sensor excitation, and portable instrumentation circuits.
For engineers reviewing the LM4050AEM3-10/NOPB datasheet, LM4050AEM3-10/NOPB pinout, LM4050AEM3-10/NOPB application, or LM4050AEM3-10/NOPB equivalent, key selection criteria include its SOT-23 package compatibility, 10 V fixed reference accuracy over wide current range (100 μA–15 mA), low 150 μVrms noise (10 Hz–10 kHz), and guaranteed stability with capacitive loads - critical for battery-powered data acquisition and automotive-grade sensing systems.
Technical Context
The LM4050AEM3-10/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its dynamic impedance remains ≤0.7 Ω at 1 mA, enabling precise regulation under varying load currents from 100 μA to 15 mA.
It achieves ±0.1% output voltage tolerance at 25°C and maintains ≤±43 mV (0.43%) total error over −40°C to 125°C via fused trim and low thermal hysteresis (2.8 mV). No external capacitor is required, and it tolerates arbitrary capacitive loading - eliminating stability concerns common in traditional shunt references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V nominal reverse breakdown voltage, fixed and non-adjustable |
| Initial Tolerance | ±0.1% at 25°C (A grade), enabling high-accuracy system calibration without trimming |
| Temp Coefficient | ≤50 ppm/°C max over −40°C to 125°C, minimizing drift in industrial environments |
| Min Operating Current | 100 μA - defines lowest usable bias current for stable regulation |
| Max Operating Current | 15 mA - sets upper limit for shunt current handling without derating |
| Output Noise | 150 μVrms (10 Hz–10 kHz), suitable for 16-bit+ data converters |
| Dynamic Impedance | 0.7 Ω at 1 mA - ensures <1 mV output shift per 1 mA load change |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, body size 2.92 mm × 1.30 mm, JEDEC standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference voltage node | Connected to supply rail; sinks all current not drawn by load; defines regulated 10 V at this node relative to Anode |
| Anode (Pin 2) | Ground reference / common return | Must be connected to system ground; all voltage specifications referenced to this pin |
| NC (Pin 3) | No internal connection | Left floating; no electrical function - must not be soldered or tied to any net |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Guaranteed stability with any capacitive load - eliminates BOM item and layout uncertainty |
| Fixed 10 V reference | Eliminates external resistor network; reduces calibration complexity and long-term drift sources |
| Low 100 μA start-up current | Enables use in ultra-low-power systems such as coin-cell IoT sensors and wake-on-event circuits |
| 50 ppm/°C max tempco | Supports <±0.5% total error over full −40°C to 125°C range - meets industrial and automotive requirements |
| 150 μVrms broadband noise | Preserves SNR in precision ADC front-ends and low-noise amplifier biasing networks |
Applications
| Portable Data Loggers | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered environmental monitoring node sampling temperature, humidity, and pressure at 100 kS/s. IC Role / Device Role / Timing Role: Provides stable 10 V reference for SAR ADC and excitation current source for resistive sensors. Use Value: Enables 16-bit effective resolution over full temperature range without recalibration; 100 μA quiescent current extends 10-year battery life. |
Use Scenario: Engine control unit measuring exhaust gas oxygen concentration using wideband lambda sensor. IC Role / Device Role / Timing Role: Supplies precision 10 V bias to sensor interface op-amp and reference for analog front-end ADC. Use Value: Maintains <±0.4% reference accuracy from −40°C cold crank to +125°C under-hood operation, meeting AEC-Q100 Grade 1 requirements. |
| Industrial Process Transmitters | Precision Audio DAC Reference |
Use Scenario: 4–20 mA loop-powered field transmitter converting RTD readings to current output. IC Role / Device Role / Timing Role: Generates stable 10 V reference for ratiometric excitation and ADC conversion reference. Use Value: Eliminates gain drift in 4–20 mA output stage; 120 ppm long-term stability ensures <0.1% calibration drift over 5 years. |
Use Scenario: High-fidelity audio DAC board requiring ultra-low-noise analog voltage reference for I/V conversion stage. IC Role / Device Role / Timing Role: Supplies clean 10 V reference to op-amp feedback network defining DAC output scale. Use Value: 150 μVrms noise contributes <−105 dB THD+N floor, preserving dynamic range in 24-bit audio playback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5010IDBZR | Series reference (not shunt); requires external bypass cap; 3 ppm/°C tempco; 3.8 μVrms noise | Higher accuracy but needs higher supply headroom (>11.5 V); unsuitable for low-voltage or floating-bias designs | Select when ultra-low drift and noise are prioritized over simplicity and supply flexibility |
| ADR4510BRZ | Series reference; 3.5 ppm/°C tempco; 1.2 μVrms noise; requires ≥11.5 V input; 10 mA quiescent current | Superior performance but incompatible with shunt topology constraints (e.g., floating ground, current-sink bias) | Choose only if system supports series architecture and can accommodate higher power and voltage overhead |
Compared with REF5010IDBZR and ADR4510BRZ, the LM4050AEM3-10/NOPB offers unique advantages in shunt-configured systems: zero external capacitor requirement, operation down to 10.1 V supply, and 100 μA quiescent current - making it irreplaceable in space-constrained, low-power, or floating-reference applications where series references cannot be substituted.
Availability
LM4050AEM3-10/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial process transmitters requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050AEM3-10/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 leadership in precision reference design and automotive-qualified components.
The LM4050-N family was engineered for high-accuracy, low-power shunt reference applications in space-constrained and thermally demanding environments - targeting portable test equipment, automotive sensors, and industrial control systems.
FAQ
What is the minimum supply voltage required for stable operation of the LM4050AEM3-10/NOPB?
The LM4050AEM3-10/NOPB requires a supply voltage at least 100 mV above its 10 V nominal breakdown voltage to ensure regulation - i.e., ≥10.1 V. This headroom accommodates dynamic impedance drop and ensures stable shunt behavior across the full 100 μA–15 mA operating current range. Below 10.1 V, the device enters forward conduction or unregulated mode.
Can the LM4050AEM3-10/NOPB drive a capacitive load directly without oscillation?
Yes - the LM4050AEM3-10/NOPB is explicitly designed to remain stable with any capacitive load, including large bulk capacitors or long PCB traces. Its internal compensation eliminates the need for an external series resistor or isolation capacitor, unlike most shunt references. This capability is verified across all operating conditions in the official TI datasheet (SNOS455G).
Is the LM4050AEM3-10/NOPB qualified for automotive applications?
No - the LM4050AEM3-10/NOPB is the industrial-grade variant. For automotive use, TI offers the LM4050QAIM3-10/NOPB (AEC-Q100 Grade 1 qualified). The "Q" suffix denotes automotive qualification, including extended temperature testing, enhanced reliability screening, and PPAP documentation support - features absent in the standard LM4050AEM3-10/NOPB.
What is the long-term stability specification for the LM4050AEM3-10/NOPB?
The LM4050AEM3-10/NOPB exhibits ≤120 ppm reverse breakdown voltage drift after 1000 hours of operation at 25°C and 100 μA bias current. This value represents typical parametric shift under accelerated aging conditions and supports predictable calibration intervals in metrology-grade instruments and industrial transmitters.
How does the LM4050AEM3-10/NOPB handle thermal hysteresis?
The LM4050AEM3-10/NOPB specifies 2.8 mV maximum thermal hysteresis - defined as the voltage difference measured at 25°C after cycling between −40°C and +125°C. This low hysteresis ensures repeatable reference accuracy during thermal cycling in outdoor or engine-bay deployments, directly supporting high-reliability measurement integrity.
LM4050AEM3-10/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):
- 10V
- 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:
- 110 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050AEM3-10/NOPB FAQ
1.How can I place an order for LM4050AEM3-10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AEM3-10/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 LM4050AEM3-10/NOPB reliable?
The price and inventory of LM4050AEM3-10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AEM3-10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050AEM3-10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AEM3-10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AEM3-10/NOPB?
LM4050AEM3-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AEM3-10/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 LM4050AEM3-10/NOPB?
For technical support, including LM4050AEM3-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AEM3-10/NOPB requirements.
6.How does Aetrix verify that LM4050AEM3-10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050AEM3-10/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 LM4050AEM3-10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050AEM3-10/NOPB?
All LM4050AEM3-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AEM3-10/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 LM4050AEM3-10/NOPB part is unused and in its original packaging.
Return procedure for LM4050AEM3-10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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