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Texas Instruments LM4050QCIM3X5.0/NOPB
- Part No.:
- LM4050QCIM3X5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QCIM3X5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,890
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Product details
Overview
LM4050QCIM3X5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 5.0 V nominal reverse breakdown voltage with ±0.1% initial tolerance (A-grade), 50 ppm/°C max temperature coefficient, and 41 μVrms wideband noise (10 Hz–10 kHz). It operates from 60 μA to 15 mA, supports capacitive loads without external compensation, and targets high-accuracy analog signal chains in space-constrained systems.
For engineers reviewing the LM4050QCIM3X5.0/NOPB datasheet, LM4050QCIM3X5.0/NOPB pinout, LM4050QCIM3X5.0/NOPB application, or LM4050QCIM3X5.0/NOPB equivalent, key selection criteria include its 5.0 V fixed output, SOT-23-3 industrial-grade packaging, low-noise performance, no-output-capacitor requirement, and compatibility with battery-powered instrumentation and data acquisition systems requiring long-term stability and thermal hysteresis under 1.4 mV.
Technical Context
The LM4050QCIM3X5.0/NOPB employs bandgap-based curvature-corrected Zener-zap trimming for ±0.1% accuracy at 25°C and maintains stability across −40°C to +85°C (industrial range) via low dynamic impedance (0.5 Ω typical at 1 mA) and robust capacitive load tolerance. Its shunt topology requires an external current-limiting resistor but eliminates need for output bypass capacitors.
It achieves 120 ppm long-term stability after 1000 hours and exhibits thermal hysteresis of 1.4 mV over −40°C to +125°C cycling-critical for calibration-sensitive applications. The device's 5.0 V output is specified at 100 μA test current, with minimum operating current of 56 μA (typical) rising to 80 μA over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, fixed and unadjustable-sets precise bias/reference point in analog circuits. |
| Initial Tolerance | ±0.1% at 25°C (A-grade)-enables high-accuracy ADC/DAC reference without post-calibration in production. |
| Temp. Coefficient | ≤50 ppm/°C max over −40°C to +85°C-limits drift to ±2.6 mV across full industrial range. |
| Noise (10 Hz–10 kHz) | 41 μVrms typical-minimizes added noise in precision measurement front-ends and sensor signal conditioning. |
| Operating Current | 60 μA to 15 mA-supports ultra-low-power portable designs while sustaining regulation under moderate load. |
| Dynamic Impedance | 0.5 Ω typical at 1 mA-ensures minimal output voltage shift during transient load changes. |
| Long-Term Stability | 120 ppm after 1000 hrs-guarantees reference integrity over extended service life in deployed equipment. |
Pinout & Package
SOT-23 (DBZ) package, 3-pin surface-mount, body size 2.92 mm × 1.30 mm, rated for industrial temperature range (−40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage reference node | Connects to regulated output node; sinks all current through external series resistor-defines reference potential. |
| Anode (Pin 2) | Common return / ground reference | Must be connected to system ground; serves as current return path and voltage reference baseline. |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no electrical function-no routing or termination required on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with any capacitive load up to 10 µF-eliminates BOM cost and layout area for bypass caps. |
| Fixed 5.0 V output | Precisely trimmed during wafer sort-avoids external resistor networks or trimming potentiometers. |
| Micropower operation | 60 μA minimum operating current-enables multi-year battery life in portable instrumentation. |
| Low thermal hysteresis | 1.4 mV over −40°C ↔ +125°C cycle-preserves calibration integrity after environmental stress exposure. |
| Wide current range | 60 μA to 15 mA regulation-accommodates both ultra-low-power sleep modes and active high-precision sampling. |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeters and field calibrators powered by coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Shunt voltage reference for 16-bit SAR ADC and precision op-amp biasing. Use Value: Enables <10 ppm total error budget over temperature and time, extending recalibration intervals to 2+ years. |
Use Scenario: Modular DAQ modules in industrial PLCs acquiring thermocouple, RTD, and strain-gauge signals. IC Role / Device Role / Timing Role: Primary reference for sigma-delta ADCs and programmable gain instrumentation amplifiers. Use Value: Delivers 41 μVrms noise floor and ≤50 ppm/°C drift-critical for sub-μV resolution measurements. |
| Energy Management Units | Precision Audio Components |
Use Scenario: Battery monitoring ICs in UPS and solar charge controllers measuring cell voltages with 0.1% accuracy. IC Role / Device Role / Timing Role: Stable reference for high-side current-sense amplifier feedback and ADC reference rail. Use Value: Maintains ±0.1% output over 60 μA–10 mA load range-ensures consistent SOC estimation across discharge cycles. |
Use Scenario: High-fidelity DAC output stages and analog volume control circuits in studio audio interfaces. IC Role / Device Role / Timing Role: Low-noise 5.0 V reference for R-2R ladder DAC bias and headphone amplifier offset nulling. Use Value: 41 μVrms noise contributes <−107 dB THD+N-meets professional audio SNR 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 |
|---|---|---|---|
| REF3050AIDBZR | Series reference (not shunt); 5.0 V, ±0.2% initial accuracy, 50 ppm/°C, 42 μVrms noise; requires 1.2 mA supply current. | Needs dedicated supply rail; unsuitable for high-side sensing or current-limited topologies where shunt configuration is mandatory. | Select when board has clean 5.0 V supply and layout allows series topology; avoid if sourcing current from high-impedance node. |
| ADR3450ARJZ-R7 | Series reference; 5.0 V, ±0.1% initial accuracy, 20 ppm/°C max tempco, 50 μVrms noise; 125 μA quiescent current. | Higher precision tempco but higher minimum current; not compatible with shunt-based current-source architectures. | Prefer for ultra-stable, low-drift applications with adequate supply headroom; not drop-in for LM4050QCIM3X5.0/NOPB's shunt interface. |
Compared with REF3050AIDBZR and ADR3450ARJZ-R7, the LM4050QCIM3X5.0/NOPB uniquely supports shunt-mode operation with sub-100 μA startup, enabling direct integration into high-impedance bias networks and current-loop interfaces where series references cannot function.
Availability
LM4050QCIM3X5.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management units requiring stable component supply with guaranteed long-term availability and traceable lot-level documentation.
Supply support for LM4050QCIM3X5.0/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 automotive-grade reliability validation.
The LM4050-N product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated, and high-accuracy measurement systems-designed specifically for instrumentation, industrial sensing, and portable test equipment.
FAQ
What is the operating temperature range for LM4050QCIM3X5.0/NOPB?
The LM4050QCIM3X5.0/NOPB is rated for the industrial temperature range of −40°C to +85°C. It is not qualified for the extended −40°C to +125°C range-this applies only to specific LM4050-N-Q1 automotive variants or non-Q grade versions with different suffixes. Always verify ambient and junction temperature limits against derating curves in the official datasheet.
Does LM4050QCIM3X5.0/NOPB require an output capacitor?
No, the LM4050QCIM3X5.0/NOPB does not require an output capacitor for stability. Its internal design tolerates capacitive loads up to at least 10 µF without oscillation, eliminating the need for external bypass components-a key advantage over many competing shunt references.
What is the minimum cathode current needed for regulation in LM4050QCIM3X5.0/NOPB?
The LM4050QCIM3X5.0/NOPB requires a minimum cathode current of 56 μA (typical) at 25°C, increasing to 80 μA over the full −40°C to +85°C range. Below this threshold, the device exits regulation and output voltage collapses-designers must size the series current-limiting resistor accordingly.
How does LM4050QCIM3X5.0/NOPB achieve ±0.1% initial accuracy?
The LM4050QCIM3X5.0/NOPB achieves ±0.1% initial accuracy (A-grade) through laser-trimmed Zener-zap and fuse programming during wafer sort, combined with bandgap temperature drift curvature correction. This process ensures tight distribution without post-package trimming or calibration.
Is LM4050QCIM3X5.0/NOPB RoHS-compliant and lead-free?
Yes, LM4050QCIM3X5.0/NOPB carries the /NOPB suffix, indicating it is lead-free and RoHS-compliant per TI's standard manufacturing process. The SOT-23 package uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements.
LM4050QCIM3X5.0/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:
- Obsolete
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QCIM3X5.0/NOPB FAQ
1.How can I place an order for LM4050QCIM3X5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QCIM3X5.0/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 LM4050QCIM3X5.0/NOPB reliable?
The price and inventory of LM4050QCIM3X5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QCIM3X5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QCIM3X5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QCIM3X5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QCIM3X5.0/NOPB?
LM4050QCIM3X5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QCIM3X5.0/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 LM4050QCIM3X5.0/NOPB?
For technical support, including LM4050QCIM3X5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QCIM3X5.0/NOPB requirements.
6.How does Aetrix verify that LM4050QCIM3X5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QCIM3X5.0/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 LM4050QCIM3X5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QCIM3X5.0/NOPB?
All LM4050QCIM3X5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QCIM3X5.0/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 LM4050QCIM3X5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050QCIM3X5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050QCIM3X5.0/NOPB Tags
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