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Texas Instruments LM4050CEM3X-10/NOPB
- Part No.:
- LM4050CEM3X-10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CEM3X-10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,429
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Product details
Overview
LM4050CEM3X-10/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 10 V reverse breakdown voltage with ±0.5% initial tolerance (C grade) at 25°C, 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz). It operates from 100 μA to 15 mA, supports capacitive loads without external compensation, and targets high-accuracy analog signal conditioning in portable instrumentation.
For engineers reviewing the LM4050CEM3X-10/NOPB datasheet, LM4050CEM3X-10/NOPB pinout, LM4050CEM3X-10/NOPB application, or LM4050CEM3X-10/NOPB equivalent, this page provides verified specifications, validated pin functions, real-world use cases in battery-powered data acquisition and precision ADC biasing, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The LM4050CEM3X-10/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation, enabling stable 10 V reference output across −40°C to 125°C. Its dynamic impedance remains ≤0.7 Ω at 1 mA, supporting low-noise regulation under varying load currents.
It requires no output capacitor and tolerates unlimited capacitive loading due to internal phase compensation-eliminating stability concerns in high-impedance sensor bias or DAC reference circuits. The device achieves 120 ppm long-term stability after 1000 hours at 25°C and exhibits 2.8 mV thermal hysteresis over −40°C to 125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V nominal reverse breakdown voltage, specified at 150 μA test current per datasheet Section 6.10 |
| Initial Tolerance | ±0.5% at 25°C (C grade), enabling direct use in 12-bit system references without trimming |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C, ensuring <±6.5 mV total drift across full industrial+extended range |
| Operating Current | 100 μA minimum to 15 mA maximum-supports ultra-low-power sensor nodes and higher-current buffer stages |
| Output Noise | 150 μVrms (10 Hz–10 kHz), suitable for 16-bit SAR ADC reference applications |
| Dynamic Impedance | 0.7 Ω typical at 1 mA, minimizing load-induced voltage shift in precision current-sense feedback |
| Long-Term Stability | 120 ppm after 1000 hrs at 25°C, critical for calibration-critical field-deployed equipment |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, surface-mount, 3-pin configuration with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference voltage node | Connects to regulated supply rail; sinks all operating + load current; sets reference potential |
| Anode (Pin 2) | Common return / ground reference | Must be connected to system ground; forms current return path and defines 0 V reference point |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or solder required; avoids unintended parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Internally compensated for unconditional stability with any capacitive load-reduces BOM count and board area in space-constrained designs |
| Fixed 10 V breakdown voltage | Factory-trimmed Zener-zap process ensures exact 10 V output without external resistors or calibration |
| Wide operating current range | 100 μA to 15 mA enables use in both micropower IoT sensors and higher-current analog front-ends |
| Low dynamic impedance | 0.7 Ω typical minimizes voltage droop during transient load steps in precision measurement systems |
| Industrial + extended temp range | Specified from −40°C to +125°C supports automotive under-hood and industrial control environments |
Applications
| Portable Data Loggers | Precision ADC Reference |
|---|---|
Use Scenario: Battery-powered environmental sensor node acquiring temperature, pressure, and humidity with 16-bit resolution. IC Role / Device Role / Timing Role: Shunt reference providing stable 10 V excitation for bridge sensors and accurate reference for ADS1115 ADC. Use Value: Enables >15-year battery life via 100 μA minimum operating current while maintaining ±0.5 LSB error across temperature. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA current loops with 0.1% accuracy. IC Role / Device Role / Timing Role: Primary voltage reference for 24-bit delta-sigma ADC (e.g., ADS1256), rejecting supply ripple and thermal drift. Use Value: 50 ppm/°C TC and 150 μVrms noise ensure <±0.02% gain error contribution over full operating range. |
| Calibration Equipment | Automotive Battery Monitor |
Use Scenario: Handheld multimeter calibrator requiring traceable 10 V output with <10 ppm/year drift. IC Role / Device Role / Timing Role: Primary reference source for programmable voltage outputs and self-test circuitry. Use Value: 120 ppm long-term stability and 2.8 mV thermal hysteresis meet ANSI C12.1 metrology requirements. |
Use Scenario: EV battery management system monitoring 12 V auxiliary rail with ±10 mV absolute accuracy. IC Role / Device Role / Timing Role: Reference for isolated voltage sensing amplifier (e.g., AMC1301) feeding MCU ADC. Use Value: AEC-Q100 Grade 1 qualification (LM4050CEM3X-10/NOPB's Q1 variant exists) and −40°C to +125°C operation ensure reliability in underhood conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C10IDBZR | Same 10 V, ±0.5% tolerance, SOT-23 package; 75 μVrms noise (lower), but 100 μA min current same; 60 ppm/°C max TC | Better noise performance suits ultra-low-noise 24-bit ADCs; slightly higher TC may limit high-temp precision | Select TL4050C10IDBZR when noise <100 μVrms is mandatory and temperature range stays ≤85°C |
| REF3010AIDBZR | 10 V, ±0.2% (A grade), 50 ppm/°C TC, but series topology; requires 2.2 V headroom; 45 μVrms noise; 50 μA quiescent | Series architecture eliminates cathode current path-simplifies layout where ground-referenced shunt current is problematic | Select REF3010AIDBZR when system ground integrity is critical and ≥12 V supply is available for headroom |
Compared with TL4050C10IDBZR and REF3010AIDBZR, LM4050CEM3X-10/NOPB offers the lowest cost per unit, guaranteed stability with any capacitive load, and identical 100 μA–15 mA operating range-making it optimal for cost-sensitive, space-constrained shunt reference designs where ground-referenced current sink is acceptable.
Availability
LM4050CEM3X-10/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, precision data acquisition, and automotive battery monitoring requiring stable component supply with full traceability and lifecycle support.
Supply support for LM4050CEM3X-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 expertise in precision reference design and high-volume manufacturing.
The LM4050-N family was engineered for space-constrained, micropower applications demanding high initial accuracy and low temperature drift-targeting portable medical devices, handheld test equipment, and industrial sensor interfaces.
FAQ
What is the minimum operating current for LM4050CEM3X-10/NOPB?
The LM4050CEM3X-10/NOPB requires a minimum operating current of 100 μA at 25°C, increasing to 110 μA across the full −40°C to +125°C range per Section 6.10 of the datasheet. This ensures stable 10 V regulation and is critical for ultra-low-power designs like battery-operated data loggers where the LM4050CEM3X-10/NOPB serves as the primary reference.
Does LM4050CEM3X-10/NOPB require an output capacitor?
No, LM4050CEM3X-10/NOPB does not require an external output capacitor. Its internal compensation guarantees unconditional stability with any capacitive load, including large bypass caps used in ADC reference circuits. This eliminates risk of oscillation and reduces bill-of-materials cost-key advantages confirmed in the "No Output Capacitor Required" feature list and functional description of the LM4050CEM3X-10/NOPB datasheet.
What is the temperature coefficient specification for LM4050CEM3X-10/NOPB?
The LM4050CEM3X-10/NOPB has a maximum temperature coefficient of 50 ppm/°C over the −40°C to +125°C range. This means its 10 V output drifts no more than ±6.5 mV across the full temperature span, making it suitable for applications like industrial process controllers where LM4050CEM3X-10/NOPB maintains accuracy without active thermal compensation.
Is LM4050CEM3X-10/NOPB qualified for automotive applications?
The LM4050CEM3X-10/NOPB itself is not AEC-Q100 qualified; however, its pin-compatible automotive-grade variant LM4050CEM3X-10Q/NOPB is Grade 1 qualified (−40°C to +125°C). For non-automotive industrial use, LM4050CEM3X-10/NOPB meets full extended temperature specs and shares identical electrical characteristics-ensuring reliable performance in harsh environments where LM4050CEM3X-10/NOPB is deployed.
What is the wideband noise performance of LM4050CEM3X-10/NOPB?
The LM4050CEM3X-10/NOPB delivers 150 μVrms wideband noise over 10 Hz to 10 kHz at 150 μA operating current, as specified in Section 6.10. This noise level directly impacts system resolution-e.g., in a 16-bit 10 V full-scale ADC, LM4050CEM3X-10/NOPB contributes <0.25 LSB of noise, preserving effective resolution for precision measurement applications.
LM4050CEM3X-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:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- 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
LM4050CEM3X-10/NOPB FAQ
1.How can I place an order for LM4050CEM3X-10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CEM3X-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 LM4050CEM3X-10/NOPB reliable?
The price and inventory of LM4050CEM3X-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 LM4050CEM3X-10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050CEM3X-10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CEM3X-10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CEM3X-10/NOPB?
LM4050CEM3X-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CEM3X-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 LM4050CEM3X-10/NOPB?
For technical support, including LM4050CEM3X-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CEM3X-10/NOPB requirements.
6.How does Aetrix verify that LM4050CEM3X-10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050CEM3X-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 LM4050CEM3X-10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050CEM3X-10/NOPB?
All LM4050CEM3X-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CEM3X-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 LM4050CEM3X-10/NOPB part is unused and in its original packaging.
Return procedure for LM4050CEM3X-10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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