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Texas Instruments LM4050QAIM3X4.1/NOPB
- Part No.:
- LM4050QAIM3X4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QAIM3X4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,720
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Product details
Overview
LM4050QAIM3X4.1/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 4.096 V reverse breakdown voltage with ±0.1% (A-grade) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 68 μA to 15 mA over −40°C to 125°C and requires no output capacitor while tolerating capacitive loads - enabling use in high-accuracy ADC/DAC biasing and automotive sensor signal conditioning.
For engineers reviewing the LM4050QAIM3X4.1/NOPB datasheet, LM4050QAIM3X4.1/NOPB pinout, LM4050QAIM3X4.1/NOPB application, or LM4050QAIM3X4.1/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 4.096 V output optimized for 12-bit systems (1 mV/LSB), low thermal hysteresis (1.148 mV), and stable operation without external capacitance under varying load conditions.
Technical Context
The LM4050QAIM3X4.1/NOPB implements a curvature-corrected bandgap reference architecture with Zener-zap trim at wafer sort to achieve ±0.1% initial accuracy. Its internal compensation eliminates need for external stabilization capacitors while maintaining stability across capacitive loads up to 10 nF.
As a two-terminal shunt device, it regulates voltage between cathode and anode by sinking current proportional to input voltage and load demand. Minimum operating current is 68 μA (typical) at 25°C, rising to 78 μA over extended temperature range (−40°C to 125°C), with dynamic impedance of 0.5 Ω at 1 mA and 120 ppm long-term stability after 1000 hours.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal reverse breakdown voltage - enables exact 1 mV LSB for 12-bit ADCs/DACs powered from 5 V supplies. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - ensures ≤ ±4.1 mV absolute error before temperature or aging effects. |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C - limits drift to ≤ ±20.5 mV across full industrial+automotive range. |
| Wideband Noise | 93 μVrms (10 Hz–10 kHz) - supports high-resolution data acquisition without added filtering. |
| Operating Current | 68 μA to 15 mA - allows ultra-low-power battery operation and robust regulation under heavy load transients. |
| Dynamic Impedance | 0.5 Ω at 1 mA - minimizes output voltage shift during load current changes up to 10 mA. |
| Thermal Hysteresis | 1.148 mV (−40°C ↔ 125°C cycling) - quantifies non-recoverable offset shift due to package stress. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm 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 | Connected to unregulated supply via series resistor; sinks all current not drawn by load to maintain 4.096 V at anode. |
| Anode (Pin 2) | Reference ground / output return | Common connection point for load and bypass components; must be tied to system ground for accurate regulation. |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 (anode); connecting to anode reduces EMI susceptibility in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for automotive applications with guaranteed operation from −40°C to 125°C ambient. |
| No output capacitor required | Internally compensated design achieves stability without external capacitance - reduces BOM count and board area. |
| Tolerates capacitive loads | Stable with ≥0 pF to ≥10 nF load capacitance - simplifies layout near ADC inputs or op-amp feedback nodes. |
| Low micropower operation | 68 μA minimum cathode current enables >10-year battery life in always-on sensor nodes. |
| Precision 4.096 V output | Matches standard 12-bit full-scale code spacing (4096 steps) - eliminates scaling errors in digital systems. |
Applications
| Battery-Powered Precision Sensors | Automotive Engine Control Units |
|---|---|
Use Scenario: Low-power temperature and pressure sensors in tire pressure monitoring systems (TPMS) or cabin air quality modules. IC Role / Device Role / Timing Role: Provides stable 4.096 V reference for sigma-delta ADCs digitizing analog sensor outputs. Use Value: Enables 12-bit resolution with <1 LSB error over temperature and lifetime, meeting ISO 26262 ASIL-B functional safety requirements. |
Use Scenario: Reference voltage source for knock sensor signal conditioning and fuel injector driver feedback in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Shunt regulator establishing precise bias for analog front-end amplifiers and comparators. Use Value: AEC-Q100 Grade 1 qualification ensures reliability under engine bay thermal cycling and EMI exposure. |
| Industrial Data Acquisition Modules | Energy Metering Systems |
Use Scenario: High-accuracy voltage reference in portable multimeters and handheld oscilloscopes with 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Supplies reference to ADC and DAC in calibration circuitry and programmable gain amplifier stages. Use Value: 93 μVrms noise and 50 ppm/°C TC support sub-0.01% total measurement uncertainty across 0–50°C operating range. |
Use Scenario: Reference for metrology-grade polyphase energy meters compliant with IEC 62053-21 Class 0.2 accuracy. IC Role / Device Role / Timing Role: Sets gain and offset for current-sense amplifier chains feeding 24-bit delta-sigma ADCs. Use Value: 120 ppm long-term stability ensures meter calibration remains valid for >10 years without field recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3041AIDBZR | 4.096 V, ±0.2% initial tolerance, 50 ppm/°C TC, 3.3 μA quiescent current - higher accuracy but lower max current (25 mA). | Optimized for ultra-low-power IoT sensors; lacks AEC-Q100 qualification and automotive temp range. | Select REF3041AIDBZR when micropower (<10 μA) dominates over automotive compliance and high-current capability. |
| ADR3440ARJZ-R7 | 4.096 V, ±0.1% initial tolerance, 30 ppm/°C TC, 12 μA IQ - lower noise (5.5 μVrms) but only rated to 85°C. | Targeted at precision instrumentation; not qualified for automotive or extended temperature operation. | Choose ADR3440ARJZ-R7 for lab-grade test equipment where ultra-low noise and tight TC outweigh environmental ruggedness. |
Compared with REF3041AIDBZR and ADR3440ARJZ-R7, the LM4050QAIM3X4.1/NOPB uniquely combines AEC-Q100 Grade 1 qualification, 125°C operation, and 15 mA sink capability - making it the only option suitable for under-hood automotive references requiring both high reliability and transient load handling.
Availability
LM4050QAIM3X4.1/NOPB is available at Aetrix Electronics and suitable for battery-powered sensors, automotive control units, industrial data acquisition, and energy metering systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4050QAIM3X4.1/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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and automotive-grade components.
The LM4050-N/Q1 product line delivers micropower shunt voltage references optimized for space-constrained, high-accuracy applications including automotive sensing, portable instrumentation, and industrial metrology - emphasizing AEC-Q100 compliance, low drift, and capacitor-free stability.
FAQ
What is the maximum operating current for LM4050QAIM3X4.1/NOPB?
The LM4050QAIM3X4.1/NOPB supports a maximum operating current of 15 mA. This limit ensures safe power dissipation within the SOT-23 package at elevated temperatures. Exceeding 15 mA risks junction overheating beyond the 150°C absolute maximum rating, potentially degrading long-term stability or causing permanent damage. The device maintains regulation across its full 68 μA to 15 mA range, making LM4050QAIM3X4.1/NOPB suitable for both ultra-low-power and moderate-load applications.
Does LM4050QAIM3X4.1/NOPB require an external output capacitor?
No, LM4050QAIM3X4.1/NOPB does not require an external output capacitor due to internal compensation. Its design guarantees stability with any capacitive load from 0 pF up to at least 10 nF, eliminating the need for external bypass components in most applications. While adding a capacitor is permissible and may reduce high-frequency noise, it is not necessary for basic regulation - simplifying layout and reducing bill-of-materials cost for LM4050QAIM3X4.1/NOPB implementations.
What is the thermal hysteresis specification for LM4050QAIM3X4.1/NOPB?
The thermal hysteresis of LM4050QAIM3X4.1/NOPB is 1.148 mV, measured as the voltage shift at 25°C after cycling between −40°C and 125°C. This parameter reflects mechanical stress-induced offset changes in the package and die interface, not electrical drift. For high-accuracy systems requiring repeatable measurements across thermal cycles - such as automotive diagnostic tools or portable calibrators - this value defines the worst-case non-recoverable error contribution from LM4050QAIM3X4.1/NOPB in the reference path.
Is LM4050QAIM3X4.1/NOPB qualified for automotive applications?
Yes, LM4050QAIM3X4.1/NOPB is AEC-Q100 Grade 1 qualified, certified for operation from −40°C to 125°C ambient temperature and validated for automotive use cases including engine control, body electronics, and ADAS sensor interfaces. Its qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD - confirming reliability in harsh vehicle environments. LM4050QAIM3X4.1/NOPB meets functional safety requirements for ASIL-B systems when used per manufacturer guidelines.
How does the 4.096 V output of LM4050QAIM3X4.1/NOPB benefit 12-bit data converters?
The 4.096 V output of LM4050QAIM3X4.1/NOPB yields exactly 1 mV per LSB for 12-bit ADCs and DACs operating on 5 V supplies - eliminating scaling errors and simplifying firmware calibration. This precise match avoids interpolation or digital correction, directly supporting standards-compliant metrology and sensor digitization. In systems using LM4050QAIM3X4.1/NOPB, full-scale resolution is achieved without external resistive dividers or gain adjustments, reducing component count and improving long-term accuracy stability.
LM4050QAIM3X4.1/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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 73 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QAIM3X4.1/NOPB FAQ
1.How can I place an order for LM4050QAIM3X4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QAIM3X4.1/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 LM4050QAIM3X4.1/NOPB reliable?
The price and inventory of LM4050QAIM3X4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QAIM3X4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QAIM3X4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QAIM3X4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QAIM3X4.1/NOPB?
LM4050QAIM3X4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QAIM3X4.1/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 LM4050QAIM3X4.1/NOPB?
For technical support, including LM4050QAIM3X4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QAIM3X4.1/NOPB requirements.
6.How does Aetrix verify that LM4050QAIM3X4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QAIM3X4.1/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 LM4050QAIM3X4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QAIM3X4.1/NOPB?
All LM4050QAIM3X4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QAIM3X4.1/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 LM4050QAIM3X4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4050QAIM3X4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050QAIM3X4.1/NOPB Tags
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