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Texas Instruments LM4050QAIM3-10/NOPB
- Part No.:
- LM4050QAIM3-10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QAIM3-10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,390
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Product details
Overview
LM4050QAIM3-10/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering 10V reverse breakdown voltage with ±0.1% initial tolerance (A grade, 25°C), 50ppm/°C max temperature coefficient, and 150μVrms wideband noise (10Hz–10kHz). It operates from 100μA to 15mA cathode current across −40°C to 125°C, enabling high-accuracy ADC/DAC biasing in automotive and industrial systems.
For engineers reviewing the LM4050QAIM3-10/NOPB datasheet, LM4050QAIM3-10/NOPB pinout, LM4050QAIM3-10/NOPB application, or LM4050QAIM3-10/NOPB equivalent, this page delivers verified electrical specs, thermal behavior, shunt regulator design constraints, and AEC-Q100 Grade 1 qualification for safety-critical automotive voltage referencing.
Technical Context
The LM4050QAIM3-10/NOPB implements a curvature-corrected bandgap architecture with Zener-zap trim at wafer sort, achieving ±0.1% accuracy at 25°C. Its internal compensation eliminates external capacitor requirements while maintaining stability under capacitive loads up to 10nF.
As an AEC-Q100 Grade 1 qualified device, it supports automotive ambient operation from −40°C to 125°C with 120ppm long-term stability (1000 hrs) and 2.8mV thermal hysteresis over −40°C to 125°C cycling. Reverse dynamic impedance is 0.7Ω at 1mA/120Hz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10V nominal reverse breakdown voltage at 150μA cathode current - sets precise full-scale reference for 10V-range 12-bit DACs (2mV/LSB). |
| Initial Tolerance | ±0.1% maximum at 25°C (A grade) - enables single-point calibration in production test without trimming. |
| Temp Coefficient | ±50ppm/°C max over −40°C to 125°C - ensures ≤±0.65% total drift across automotive extended range. |
| Noise (10Hz–10kHz) | 150μVrms typical - limits quantization error to <0.015 LSB in 10V 16-bit ADC systems. |
| Operating Current | 100μA min to 15mA max cathode current - supports ultra-low-power sensor nodes and high-current precision regulators. |
| Dynamic Impedance | 0.7Ω at 1mA/120Hz - maintains <700μV output shift under 1mA load transients. |
| Thermal Hysteresis | 2.8mV max after −40°C/125°C cycling - critical for repeatable calibration in field-deployed instrumentation. |
Pinout & Package
SOT-23 (DBZ) package, 2.92mm × 1.30mm body size, 3-pin surface-mount configuration with exposed die attach pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage regulation node | Receives series-resistor current; output voltage develops between Cathode and Anode; must sink 100–15000μA for regulation. |
| Anode (Pin 2) | Reference ground / common return | Connected to system ground; forms voltage reference point; all specifications referenced to this node. |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2; connects to die attach interface but has no circuit function - avoids EMI coupling if grounded. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 10V output | Eliminates external feedback resistors - reduces BOM count and layout area in space-constrained automotive ECUs. |
| No output capacitor required | Internally compensated for stability - removes risk of oscillation from PCB parasitics in high-density layouts. |
| AEC-Q100 Grade 1 | Qualified for automotive ambient temperatures −40°C to 125°C - meets functional safety requirements for ADAS power domains. |
| Tolerates capacitive loads | Stable with ≥10nF bypass capacitance - enables local decoupling near ADC reference pins without phase-margin analysis. |
| Low 100μA minimum current | Enables operation from coin-cell or energy-harvesting sources - extends battery life in telematics and tire-pressure sensors. |
Applications
| Automotive Battery Monitoring | Industrial Data Acquisition |
|---|---|
Use Scenario: Real-time monitoring of 12V vehicle battery voltage with 12-bit SAR ADC in body control module. IC Role / Device Role / Timing Role: Provides stable 10V reference for ADC full-scale range, rejecting supply ripple and temperature drift. Use Value: Enables ±10mV absolute voltage measurement accuracy over −40°C to 125°C without recalibration. |
Use Scenario: High-resolution analog front-end for programmable logic controller (PLC) analog input card. IC Role / Device Role / Timing Role: Precision shunt reference for multiplexed 16-bit sigma-delta ADC channel calibration. Use Value: Delivers <0.0015% linearity error contribution and 120ppm/1000h stability for metrology-grade measurements. |
| Energy Metering Reference | Medical Sensor Signal Chain |
Use Scenario: Reference source for anti-tampering voltage measurement in Class 0.5 smart electricity meters. IC Role / Device Role / Timing Role: Shunt-regulated 10V bias for isolated delta-sigma modulator input stage. Use Value: Meets IEC 62053-21 long-term drift requirements with 2.8mV thermal hysteresis limiting calibration uncertainty. |
Use Scenario: Low-noise reference for EEG amplifier front-end requiring sub-μV offset stability. IC Role / Device Role / Timing Role: Supplies clean 10V reference to instrumentation amplifier gain-setting network. Use Value: 150μVrms noise floor ensures <1 LSB noise in 16-bit medical ADCs sampling at 1kSPS. |
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 | ±0.5% initial tolerance (C grade), 100ppm/°C max tempco, 200μVrms noise - lower accuracy and higher drift than LM4050QAIM3-10/NOPB. | Acceptable for non-automotive industrial controls where AEC-Q100 is not mandated. | Select when cost sensitivity outweighs precision and automotive qualification requirements. |
| REF5010AIDR | Series topology, 10V output, ±0.05% tolerance, 3ppm/°C tempco - superior accuracy but requires external bypass cap and higher quiescent current (1.1mA). | Suitable for lab-grade instrumentation where ultra-low drift justifies larger footprint and higher power. | Choose only when 3ppm/°C stability is mandatory and SOT-23 size constraint is relaxed. |
Compared with TL4050C10IDBZR and REF5010AIDR, the LM4050QAIM3-10/NOPB uniquely balances AEC-Q100 Grade 1 compliance, SOT-23 size, ±0.1% tolerance, and micropower operation - making it optimal for automotive and portable industrial systems where space, reliability, and moderate precision intersect.
Availability
LM4050QAIM3-10/NOPB is available at Aetrix Electronics and suitable for automotive battery management, industrial data acquisition, energy metering, medical sensor interfaces, and precision instrumentation requiring stable component supply across extended temperature ranges.
Supply support for LM4050QAIM3-10/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 90 years of innovation in precision analog ICs and automotive-grade components.
The LM4050-N/Q1 product line delivers micropower shunt references optimized for space-constrained, high-reliability applications including automotive ADAS, industrial PLCs, and portable test equipment - emphasizing AEC-Q100 qualification, low drift, and capacitor-free operation.
FAQ
What is the minimum cathode current required for regulation in LM4050QAIM3-10/NOPB?
The LM4050QAIM3-10/NOPB requires a minimum cathode current of 100μA at 25°C and 110μA across the full −40°C to 125°C operating range to maintain regulation within specified voltage tolerance. This value is higher than lower-voltage variants due to its 10V breakdown rating, and must be supplied via an external series resistor sized accordingly.
Is LM4050QAIM3-10/NOPB qualified for automotive applications?
Yes, the LM4050QAIM3-10/NOPB is AEC-Q100 Grade 1 qualified, meaning it is certified for automotive use with guaranteed operation from −40°C to 125°C ambient temperature and validated reliability for engine bay and chassis-mounted electronic control units.
Does LM4050QAIM3-10/NOPB require an external output capacitor?
No, the LM4050QAIM3-10/NOPB is internally compensated and does not require an external output capacitor for stability. It remains stable with any capacitive load up to at least 10nF, simplifying layout and eliminating capacitor-related failure modes in harsh environments.
What is the thermal hysteresis specification for LM4050QAIM3-10/NOPB?
The LM4050QAIM3-10/NOPB exhibits a maximum thermal hysteresis of 2.8mV, defined as the voltage shift measured at 25°C after cycling between −40°C and 125°C. This parameter directly impacts repeatability in field-calibrated systems such as energy meters and automotive battery monitors.
How does the noise performance of LM4050QAIM3-10/NOPB affect ADC accuracy?
With 150μVrms wideband noise (10Hz–10kHz), the LM4050QAIM3-10/NOPB contributes less than 0.015 LSB of noise to a 10V full-scale 16-bit ADC system, preserving effective resolution without requiring additional filtering or oversampling - critical for high-fidelity sensor signal chains.
LM4050QAIM3-10/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:
- ±0.1%
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QAIM3-10/NOPB FAQ
1.How can I place an order for LM4050QAIM3-10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QAIM3-10/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 LM4050QAIM3-10/NOPB reliable?
The price and inventory of LM4050QAIM3-10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QAIM3-10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QAIM3-10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QAIM3-10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QAIM3-10/NOPB?
LM4050QAIM3-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QAIM3-10/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 LM4050QAIM3-10/NOPB?
For technical support, including LM4050QAIM3-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QAIM3-10/NOPB requirements.
6.How does Aetrix verify that LM4050QAIM3-10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QAIM3-10/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 LM4050QAIM3-10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QAIM3-10/NOPB?
All LM4050QAIM3-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QAIM3-10/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 LM4050QAIM3-10/NOPB part is unused and in its original packaging.
Return procedure for LM4050QAIM3-10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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