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Texas Instruments LM4050CIM3-10/NOPB
- Part No.:
- LM4050CIM3-10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CIM3-10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,508
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Product details
Overview
LM4050CIM3-10/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), 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz) at 150 μA operating current. It serves as a compact, capacitor-free reference for high-resolution ADCs and portable instrumentation.
For engineers reviewing the LM4050CIM3-10/NOPB datasheet, LM4050CIM3-10/NOPB pinout, LM4050CIM3-10/NOPB application, or LM4050CIM3-10/NOPB equivalent, key selection criteria include its 100 μA minimum operating current, 15 mA max shunt current, 0.7 Ω dynamic impedance, industrial/extended temperature range support (−40°C to +125°C), and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LM4050CIM3-10/NOPB uses bandgap-derived Zener-zap trimmed reverse breakdown voltage with curvature-corrected temperature drift compensation, enabling stable 10 V output across −40°C to +125°C without external capacitors. Its low dynamic impedance (0.7 Ω at 1 mA) and tolerance of capacitive loads simplify filtering in precision analog signal chains.
Designed for micropower operation, it achieves 100 μA minimum cathode current at 10 V output while maintaining ±83 mV total voltage tolerance over the extended temperature range. The device employs fuse-based wafer-sort trimming to guarantee C-grade (±0.5%) accuracy at 25°C and supports long-term stability of 120 ppm after 1000 hours.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V nominal reverse breakdown voltage, fixed and non-adjustable |
| Initial Tolerance | ±0.5% at 25°C (C-grade), verified by wafer-sort Zener-zap trimming |
| Temp Coefficient | ≤50 ppm/°C max over −40°C to +125°C, enabling <±0.525% total drift |
| Min Operating Current | 100 μA (at 10 V), defining lowest usable bias for regulation |
| Dynamic Impedance | 0.7 Ω at 1 mA, ensuring minimal load-induced voltage shift |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz), critical for high-SNR data acquisition |
| Long-Term Stability | 120 ppm after 1000 hrs at 25°C, supporting calibration integrity |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body size, JEDEC standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference voltage node | Connects to supply rail; sinks regulated current to maintain 10 V across anode–cathode |
| Anode (Pin 2) | Reference ground / common return | Must be connected to system ground; defines 0 V reference point for output |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no electrical function or thermal role |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with zero external capacitance due to internal compensation |
| Tolerates capacitive loads | Remains stable with any value of output capacitance, simplifying filter design |
| Micropower operation | 100 μA minimum cathode current enables battery-powered multi-year operation |
| Low thermal hysteresis | 2.8 mV max hysteresis after −40°C ↔ +125°C cycling preserves calibration repeatability |
| Extended temperature range | Full specification over −40°C to +125°C supports automotive and industrial environments |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeters and portable calibrators requiring stable, low-power voltage references. IC Role / Device Role / Timing Role: Shunt reference providing precise 10 V excitation for ADC front-ends and sensor bridges. Use Value: Enables 16-bit+ resolution without external buffering or trimming, reducing BOM count and board area. |
Use Scenario: Modular DAQ modules in test benches where channel density and power efficiency are critical. IC Role / Device Role / Timing Role: Precision reference for successive-approximation ADCs and programmable gain amplifiers. Use Value: 150 μVrms noise and 50 ppm/°C TC ensure ≤0.01% measurement error across ambient temperature swings. |
| Energy Management Systems | Precision Audio Components |
Use Scenario: Smart metering units monitoring grid voltage with Class 0.5 accuracy requirements. IC Role / Device Role / Timing Role: Reference for isolated sigma-delta ADCs measuring AC mains voltage via resistive dividers. Use Value: 120 ppm long-term stability minimizes recalibration frequency, extending field service intervals. |
Use Scenario: High-fidelity DAC output stages requiring ultra-low-noise, thermally stable biasing. IC Role / Device Role / Timing Role: Reference source for voltage-controlled filters and analog volume control circuits. Use Value: Low hysteresis (2.8 mV) prevents audible pitch drift during thermal cycling in studio equipment. |
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 (2.495–36 V via resistor divider); higher 22 Ω dynamic impedance; 150 μA min current | Requires external resistors for 10 V setting; less stable over temperature (92 ppm/°C typical) | Choose when adjustable output or higher current drive (>100 mA) is needed; not drop-in for fixed 10 V |
| REF5010AIDR | Series reference with 10 V output; 3 μVp-p noise (0.1–10 Hz); 3 ppm/°C TC; requires 1.2 mA quiescent current | Higher power, larger SOIC-8 package; needs input/output capacitors; unsuitable for micropower designs | Choose for ultra-low noise/TC where board space and battery life are secondary to precision |
Compared with TL431CDBZR and REF5010AIDR, the LM4050CIM3-10/NOPB uniquely balances fixed 10 V accuracy, SOT-23 footprint, 100 μA operation, and capacitor-free stability-making it optimal for space- and power-constrained precision analog systems where adjustment or ultra-low TC/noise are not primary requirements.
Availability
LM4050CIM3-10/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management applications requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for LM4050CIM3-10/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, embedded processing, and digital signal technologies, with decades of leadership in precision reference design.
The LM4050-N series was engineered specifically for space-constrained, micropower analog systems needing factory-trimmed shunt references with guaranteed initial accuracy and low thermal drift-targeting instrumentation, portable test gear, and industrial sensing.
FAQ
What is the minimum operating current for LM4050CIM3-10/NOPB?
The LM4050CIM3-10/NOPB requires a minimum cathode current of 100 μA to maintain regulation at 10 V across its full temperature range (−40°C to +125°C). This value is specified in Section 6.10 of the datasheet under "Minimum Operating Current" for the 10-V option and reflects worst-case C-grade behavior at elevated temperatures. Below this threshold, the LM4050CIM3-10/NOPB may exit regulation and exhibit increased output deviation.
Does LM4050CIM3-10/NOPB require an output capacitor?
No, the LM4050CIM3-10/NOPB does not require an output capacitor for stability. Its internal design eliminates the need for external stabilization capacitance while remaining stable with any capacitive load-a key advantage over older shunt references. This capability is explicitly stated in the Features section and validated in the Functional Block Diagram and Application Information sections of the datasheet for LM4050CIM3-10/NOPB.
What is the maximum shunt current rating for LM4050CIM3-10/NOPB?
The LM4050CIM3-10/NOPB supports a maximum cathode (shunt) current of 15 mA, as defined in the "Key Specifications" and confirmed in Section 6.1 "Absolute Maximum Ratings" of the datasheet. Exceeding this current risks exceeding the 280 mW power dissipation limit at 25°C ambient, potentially triggering thermal shutdown or degrading long-term reliability. Derating is required above 25°C per the RθJA = 287°C/W thermal metric.
Is LM4050CIM3-10/NOPB qualified for automotive use?
No, LM4050CIM3-10/NOPB is not AEC-Q100 qualified. It belongs to the industrial-grade LM4050-N family. For automotive applications, TI offers the LM4050-N-Q1 variant (e.g., LM4050CIM3-10Q/NOPB), which is AEC-Q100 Grade 1 qualified and manufactured on an automotive-grade flow. The LM4050CIM3-10/NOPB lacks the qualification testing and process controls required for automotive deployment.
What is the long-term stability specification for LM4050CIM3-10/NOPB?
The LM4050CIM3-10/NOPB exhibits 120 ppm reverse breakdown voltage drift after 1000 hours of operation at 25°C and 100 μA cathode current, as specified in Section 6.10 "Electrical Characteristics: 10-V Option". This parameter reflects parametric shift due to aging and is measured under controlled conditions; actual field stability may vary based on thermal stress and current profile, but the LM4050CIM3-10/NOPB's fuse-trimmed construction ensures predictable, bounded drift.
LM4050CIM3-10/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:
- 103 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050CIM3-10/NOPB FAQ
1.How can I place an order for LM4050CIM3-10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CIM3-10/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 LM4050CIM3-10/NOPB reliable?
The price and inventory of LM4050CIM3-10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050CIM3-10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050CIM3-10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CIM3-10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CIM3-10/NOPB?
LM4050CIM3-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CIM3-10/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 LM4050CIM3-10/NOPB?
For technical support, including LM4050CIM3-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CIM3-10/NOPB requirements.
6.How does Aetrix verify that LM4050CIM3-10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050CIM3-10/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 LM4050CIM3-10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050CIM3-10/NOPB?
All LM4050CIM3-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CIM3-10/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 LM4050CIM3-10/NOPB part is unused and in its original packaging.
Return procedure for LM4050CIM3-10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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