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Texas Instruments LM4050CIM3X-5.0/NOPB
- Part No.:
- LM4050CIM3X-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050CIM3X-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,797
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Product details
Overview
LM4050CIM3X-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 5.0 V reverse breakdown voltage with ±0.5% initial tolerance (C-grade), 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 56 μA to 15 mA, supports capacitive loads without external compensation, and targets high-accuracy analog signal chains in portable instrumentation.
For engineers reviewing the LM4050CIM3X-5.0/NOPB datasheet, LM4050CIM3X-5.0/NOPB pinout, LM4050CIM3X-5.0/NOPB application, or LM4050CIM3X-5.0/NOPB equivalent, this page delivers verified specifications, validated pin functions, real-world use cases for battery-powered and industrial systems, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The LM4050CIM3X-5.0/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its dynamic impedance remains ≤0.5 Ω at 1 mA, enabling stable regulation under varying load currents from 56 μA to 15 mA.
It requires no output capacitor and tolerates unlimited capacitive loading due to inherent phase-margin design-eliminating stability concerns in ADC reference, sensor biasing, and DAC feedback paths across −40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, fixed and unadjustable |
| Initial Tolerance | ±0.5% at 25°C (C-grade), verified per production test limits |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C, ensuring <±2.5 mV drift across full range |
| Operating Current | 56 μA min to 15 mA max-supports ultra-low-power sensing and high-current reference buffering |
| Noise (10 Hz–10 kHz) | 93 μVrms typical-suitable for 16-bit+ data acquisition without added filtering |
| Dynamic Impedance | 0.5 Ω max at 1 mA-minimizes load-induced voltage shift in precision circuits |
| Long-Term Stability | 120 ppm after 1000 hrs-predictable aging behavior for calibration-critical systems |
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 / reference voltage node | Connects to supply rail; sinks all operating current and load current-voltage develops across external resistor |
| Anode (Pin 2) | Reference ground return | Must be connected to system ground; forms the 0 V reference point for regulated 5.0 V output |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or thermal pad required |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Eliminates BOM cost and board space for stabilization-valid across all capacitive loads |
| Capacitive load tolerance | Stable with any value of output capacitance, including ceramic bypass caps in noisy environments |
| Wide operating current range | 56 μA to 15 mA enables use from nanoamp sensor biasing to 12-bit DAC reference buffering |
| Low thermal hysteresis | 1.4 mV max over −40°C ↔ 125°C cycling-preserves calibration integrity in thermally cycled systems |
| Industrial + extended temp support | Specified from −40°C to 125°C-qualified for energy metering, automotive body control, and factory automation |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 24-bit sigma-delta ADC requiring stable 5 V reference under battery discharge. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 5.0 V node for ADC voltage reference input and analog front-end biasing. Use Value: ±0.5% initial accuracy and 50 ppm/°C TC ensure <±1 LSB error across 0–100% battery voltage swing and ambient temperature shifts. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals with 16-bit resolution. IC Role / Device Role / Timing Role: Precision shunt reference for op-amp-based current-to-voltage conversion and ADC reference rail. Use Value: 93 μVrms noise and 0.5 Ω dynamic impedance prevent noise coupling and load-induced gain error in high-Z sensor interfaces. |
| Energy Management | Precision Audio Components |
Use Scenario: Smart electricity meter with metrology IC requiring traceable 5 V reference for revenue-grade measurement. IC Role / Device Role / Timing Role: Primary voltage reference for polyphase energy measurement ASIC and isolated communication interface biasing. Use Value: 120 ppm long-term stability and low thermal hysteresis enable recalibration intervals >10 years in sealed meter enclosures. |
Use Scenario: High-fidelity audio DAC board where reference noise directly impacts THD+N performance. IC Role / Device Role / Timing Role: Low-noise 5 V shunt reference for DAC VREF pin and headphone amplifier bias rails. Use Value: 93 μVrms broadband noise contributes <−105 dBc to THD+N floor-meets ESS Sabre-class audio 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 |
|---|---|---|---|
| TL4050C50IDBZR | Same 5.0 V, ±0.5% C-grade, SOT-23, but higher 100 μVrms noise and 1.0 Ω dynamic impedance | Less suitable for 16-bit+ DAQ; acceptable for 12-bit sensor interfaces with relaxed noise budgets | Select when cost sensitivity outweighs noise/impedance requirements and TI second-source assurance is needed |
| ADR3450ARJZ-R7 | Series reference (not shunt); 5.0 V, ±0.1% A-grade, 10 μVrms noise, but requires ≥100 μA quiescent current and output capacitor | Requires PCB redesign (series topology, decoupling cap); incompatible with shunt-based current-sensing topologies | Choose only if system already uses series references and lowest noise is critical-no drop-in replacement |
Compared with TL4050C50IDBZR, LM4050CIM3X-5.0/NOPB offers lower noise and impedance for high-resolution measurement; versus ADR3450ARJZ-R7, it enables simpler, capacitor-free shunt designs but trades off ultimate precision and noise performance.
Availability
LM4050CIM3X-5.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and energy management systems requiring stable component supply with guaranteed long-term sourcing.
Supply support for LM4050CIM3X-5.0/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 product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated, and industrial systems demanding accuracy, stability, and ease of use without external components.
FAQ
What is the minimum operating current for LM4050CIM3X-5.0/NOPB?
The LM4050CIM3X-5.0/NOPB requires a minimum operating current of 56 μA at 25°C, rising to 80 μA across the industrial temperature range (−40°C to 85°C) and 90 μA across the extended range (−40°C to 125°C). This current must flow through the cathode to maintain regulation; insufficient current causes output collapse. The LM4050CIM3X-5.0/NOPB datasheet specifies these values in Section 6.8 under "Minimum Operating Current".
Does LM4050CIM3X-5.0/NOPB require an output capacitor?
No, the LM4050CIM3X-5.0/NOPB does not require an output capacitor for stability-it is explicitly designed to remain stable with any capacitive load, including zero capacitance. This eliminates layout constraints and BOM cost. The LM4050CIM3X-5.0/NOPB achieves this via internal compensation, as confirmed in the "Features" and "Description" sections of the official TI datasheet SNOS455G.
What is the temperature coefficient specification for LM4050CIM3X-5.0/NOPB?
The LM4050CIM3X-5.0/NOPB has a maximum average temperature coefficient of 50 ppm/°C over the full operating range of −40°C to 125°C. At 25°C, the typical coefficient is ±20 ppm/°C. This translates to a worst-case voltage drift of ±2.5 mV across the full temperature span-critical for calibration retention in field-deployed equipment using the LM4050CIM3X-5.0/NOPB.
Can LM4050CIM3X-5.0/NOPB be used in automotive applications?
The LM4050CIM3X-5.0/NOPB is rated for −40°C to 125°C operation and meets industrial reliability standards, but it is not AEC-Q100 qualified. For automotive applications requiring qualification, TI offers the pin-compatible LM4050CIM3X-5.0/Q1 (Q1 suffix), which is AEC-Q100 Grade 1 certified. The LM4050CIM3X-5.0/NOPB itself is intended for industrial, medical, and portable equipment-not safety-critical automotive ECUs.
What is the noise performance of LM4050CIM3X-5.0/NOPB?
The LM4050CIM3X-5.0/NOPB delivers 93 μVrms wideband noise over 10 Hz to 10 kHz at 100 μA operating current, as specified in Section 6.8 of the TI datasheet SNOS455G. This noise level supports 16-bit ADC systems without additional filtering. Higher currents reduce noise marginally; lower currents increase it. The LM4050CIM3X-5.0/NOPB's noise is measured directly across the cathode-anode terminals under defined test conditions.
LM4050CIM3X-5.0/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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050CIM3X-5.0/NOPB FAQ
1.How can I place an order for LM4050CIM3X-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050CIM3X-5.0/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 LM4050CIM3X-5.0/NOPB reliable?
The price and inventory of LM4050CIM3X-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050CIM3X-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050CIM3X-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050CIM3X-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050CIM3X-5.0/NOPB?
LM4050CIM3X-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050CIM3X-5.0/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 LM4050CIM3X-5.0/NOPB?
For technical support, including LM4050CIM3X-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050CIM3X-5.0/NOPB requirements.
6.How does Aetrix verify that LM4050CIM3X-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050CIM3X-5.0/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 LM4050CIM3X-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050CIM3X-5.0/NOPB?
All LM4050CIM3X-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050CIM3X-5.0/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 LM4050CIM3X-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050CIM3X-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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