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Texas Instruments LM4050CEM3-10/NOPB
- Part No.:
- LM4050CEM3-10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CEM3-10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,493
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Product details
Overview
LM4050CEM3-10/NOPB from Texas Instruments is a precision micropower shunt voltage reference with 10 V nominal reverse breakdown voltage, ±0.5% initial tolerance (C grade), 50 ppm/°C max temperature coefficient, and 100 μA minimum operating current. It operates across −40°C to 125°C and delivers stable reference voltage in space-constrained analog signal chains for high-resolution ADCs and portable instrumentation.
For engineers reviewing the LM4050CEM3-10/NOPB datasheet, LM4050CEM3-10/NOPB pinout, LM4050CEM3-10/NOPB application, or LM4050CEM3-10/NOPB equivalent, key selection criteria include its fixed 10 V output, SOT-23 package compatibility, no-output-capacitor-required operation, low dynamic impedance (0.7 Ω), and thermal hysteresis of 2.8 mV over −40°C to 125°C cycling.
Technical Context
The LM4050CEM3-10/NOPB uses bandgap reference architecture with curvature-corrected temperature drift compensation and Zener-zap trim at wafer sort to achieve ±0.5% initial accuracy at 25°C. Its shunt topology requires external current limiting but eliminates need for output capacitors while tolerating any capacitive load.
It maintains stable 10 V regulation across 100 μA to 15 mA operating current and exhibits low wideband noise (150 μVrms, 10 Hz–10 kHz) and long-term stability of 120 ppm after 1000 hours at 25°C. Dynamic impedance remains ≤0.7 Ω at 1 mA/120 Hz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V nominal reverse breakdown voltage, verified at 150 μA test current |
| Initial Tolerance | ±0.5% at 25°C (C grade), enabling mid-accuracy reference without calibration |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C, ensuring <±5.2 mV total drift across full range |
| Min Operating Current | 100 μA (typical), supporting ultra-low-power battery-operated systems |
| Dynamic Impedance | 0.7 Ω at 1 mA/120 Hz, minimizing load-induced voltage variation |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz), suitable for 16-bit+ data acquisition |
| Thermal Hysteresis | 2.8 mV after −40°C ↔ 125°C cycling, critical for repeatable metrology |
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 sense node | Connects to regulated supply rail; sinks all reference current plus load current |
| Anode (Pin 2) | Common reference ground | Must be connected to system ground; defines 0 V reference point |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or solder required |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact layouts without stability-compromising bypass components |
| Tolerates capacitive loads | Stable with any value of output capacitance, simplifying filtering in noisy environments |
| Fixed 10 V breakdown voltage | Eliminates external resistor network; supports direct use with 10 V ADC references |
| Industrial & extended temp range | Rated for −40°C to 125°C operation, qualifying for automotive and industrial control applications |
| Low 150 μVrms noise | Preserves SNR in precision measurement front-ends without additional filtering |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeters and battery-powered sensor nodes requiring stable 10 V reference for 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 10 V bias for ADC voltage reference input and analog front-end gain stages. Use Value: Enables 0.5% full-scale accuracy without trimming, while 100 μA min current extends battery life beyond 5 years in sleep-mode operation. |
Use Scenario: Modular DAQ modules in factory automation collecting thermocouple and strain gauge signals. IC Role / Device Role / Timing Role: Primary reference source for multiplexed 24-bit delta-sigma ADCs, referenced against isolated 10 V rail. Use Value: 50 ppm/°C tempco and 2.8 mV thermal hysteresis ensure repeatability across ambient shifts during multi-shift production runs. |
| Energy Management Meters | Precision Audio Converters |
Use Scenario: Revenue-grade electricity meters needing traceable 10 V reference for metrology-grade voltage scaling. IC Role / Device Role / Timing Role: Calibration-stable shunt reference used during factory self-test and field recalibration routines. Use Value: 120 ppm long-term stability (1000 hrs) and AEC-Q100-compatible process support compliance with IEC 62053-21 standards. |
Use Scenario: High-fidelity DAC/ADC boards where reference noise directly impacts THD+N performance. IC Role / Device Role / Timing Role: Low-noise 10 V reference for audio codec voltage reference inputs and PGA bias networks. Use Value: 150 μVrms broadband noise avoids degrading dynamic range below 110 dB, meeting ESS Sabre-class 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 |
|---|---|---|---|
| TL431CDBZR | Adjustable 2.5 V reference (requires two external resistors); 2% initial tolerance; 500 mV dropout headroom needed | Requires design-in of feedback network; unsuitable for fixed 10 V systems without added components | Choose only if adjustable output or higher current (>100 mA) sink capability is required |
| REF5010AIDR | Series 10 V reference; 0.05% initial tolerance; 3 ppm/°C tempco; requires 1.2 V headroom and output capacitor | Higher accuracy and lower drift, but needs ≥11.2 V supply and adds board area/cost for decoupling | Prefer when metrology-grade stability outweighs cost, size, and supply headroom constraints |
Compared with TL431CDBZR and REF5010AIDR, the LM4050CEM3-10/NOPB uniquely delivers fixed 10 V output in SOT-23 with zero external components, making it optimal for cost-sensitive, space-constrained designs where ±0.5% accuracy and 50 ppm/°C drift are sufficient.
Availability
LM4050CEM3-10/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, energy metering, industrial data acquisition, and precision audio converter designs requiring stable component supply with guaranteed long-term sourcing.
Supply support for LM4050CEM3-10/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 over 50 years of innovation in precision analog ICs.
The LM4050-N series was designed specifically for space-constrained, low-power shunt reference applications demanding high initial accuracy, low temperature drift, and robust capacitive-load stability - targeting portable, industrial, and automotive systems.
FAQ
What is the minimum operating current for LM4050CEM3-10/NOPB?
The LM4050CEM3-10/NOPB requires a minimum operating current of 100 μA (typical) to maintain regulation within specification. This value increases slightly at temperature extremes, reaching up to 110 μA across the full −40°C to 125°C range. Below this threshold, the device exits regulation and output voltage drops nonlinearly. The LM4050CEM3-10/NOPB must be biased with a current-limiting resistor sized accordingly.
Does LM4050CEM3-10/NOPB require an output capacitor?
No, the LM4050CEM3-10/NOPB does not require an output capacitor for stability - a key differentiator from most shunt references. Its internal design ensures unconditional stability with any capacitive load, including large bulk capacitors used for noise filtering. This eliminates layout sensitivity and reduces BOM count. The LM4050CEM3-10/NOPB remains stable even with 0 μF output capacitance.
What is the thermal hysteresis specification for LM4050CEM3-10/NOPB?
The LM4050CEM3-10/NOPB exhibits 2.8 mV maximum thermal hysteresis, defined as the voltage difference measured at 25°C after cycling between −40°C and 125°C. This parameter directly impacts repeatability in field-deployed equipment subject to ambient cycling. The LM4050CEM3-10/NOPB's hysteresis is fully characterized and guaranteed across the extended temperature range.
Can LM4050CEM3-10/NOPB be used in automotive applications?
The LM4050CEM3-10/NOPB is not AEC-Q100 qualified; however, its extended temperature range (−40°C to 125°C) and robust construction make it suitable for non-safety-critical automotive subsystems such as infotainment power supplies or cabin sensor interfaces. For ASIL-B/C applications, TI's LM4050-N-Q1 variants (e.g., LM4050CQEM3-10/NOPB) are AEC-Q100 Grade 1 qualified and recommended instead of the LM4050CEM3-10/NOPB.
What is the wideband noise performance of LM4050CEM3-10/NOPB?
The LM4050CEM3-10/NOPB delivers 150 μVrms wideband noise over the 10 Hz to 10 kHz bandwidth, measured at 150 μA operating current. This noise level is specified in the 10-V option electrical characteristics table and directly impacts effective resolution in high-precision ADC applications. The LM4050CEM3-10/NOPB's noise is dominated by thermal and Zener mechanisms, with no flicker contribution above 10 Hz.
LM4050CEM3-10/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:
- ±0.5%
- 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
LM4050CEM3-10/NOPB FAQ
1.How can I place an order for LM4050CEM3-10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CEM3-10/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 LM4050CEM3-10/NOPB reliable?
The price and inventory of LM4050CEM3-10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050CEM3-10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050CEM3-10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CEM3-10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CEM3-10/NOPB?
LM4050CEM3-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CEM3-10/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 LM4050CEM3-10/NOPB?
For technical support, including LM4050CEM3-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CEM3-10/NOPB requirements.
6.How does Aetrix verify that LM4050CEM3-10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050CEM3-10/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 LM4050CEM3-10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050CEM3-10/NOPB?
All LM4050CEM3-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CEM3-10/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 LM4050CEM3-10/NOPB part is unused and in its original packaging.
Return procedure for LM4050CEM3-10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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