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Texas Instruments LM4050QAIM3X2.0/NOPB
- Part No.:
- LM4050QAIM3X2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QAIM3X2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,711
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Product details
Overview
LM4050QAIM3X2.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 2.048 V 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 and supports stable regulation without output capacitor across capacitive loads - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4050QAIM3X2.0/NOPB datasheet, LM4050QAIM3X2.0/NOPB pinout, LM4050QAIM3X2.0/NOPB application, or LM4050QAIM3X2.0/NOPB equivalent, key selection criteria include its automotive-grade AEC-Q100 Grade 1 qualification, 2.048 V nominal output with tight thermal drift, low-noise performance in space-constrained designs, and compatibility with battery-powered data acquisition systems requiring long-term stability (120 ppm ΔVR after 1000 hrs).
Technical Context
The LM4050QAIM3X2.0/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation, enabling stable 2.048 V reference over −40°C to 125°C. Its dynamic impedance remains ≤0.3 Ω at 1 mA, ensuring minimal load regulation error (≤0.8 mV over 60 μA–1 mA range).
No external capacitor is required for stability, and it tolerates arbitrary capacitive loads due to inherent phase-margin optimization. The device achieves <1.2 mV thermal hysteresis over −40°C ↔ 125°C cycling, critical for repeatable calibration in test equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal; enables precise 12-bit ADC full-scale alignment (e.g., 4096-step conversion) without trimming. |
| Initial Tolerance | ±0.1% at 25°C (A grade); reduces system calibration burden in production test fixtures. |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C; limits drift to ±6.5 mV across full automotive range. |
| Operating Current | 60 μA min to 15 mA max; supports ultra-low-power sensor nodes and high-current DAC buffers. |
| Output Noise | 41 μVrms (10 Hz–10 kHz); preserves ENOB >15.5 bits in 16-bit SAR ADC front-ends. |
| Dynamic Impedance | 0.3 Ω at 1 mA; maintains <0.3 mV load regulation shift when sourcing up to 10 mA to external circuitry. |
| Long-Term Stability | 120 ppm ΔVR after 1000 hrs; ensures <0.25 mV output shift over 5-year field deployment. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference voltage node | Connects to regulated voltage rail; sinks all load + reference current; sets output at cathode-to-anode potential. |
| Anode (Pin 2) | Ground reference terminal | Must be connected to system ground; defines 0 V reference for output voltage measurement. |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or solder mask required; avoids unintended parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Eliminates need for external output capacitor while maintaining phase margin >45° with any load capacitance - reduces BOM count and board area by ≥2 components. |
| AEC-Q100 Grade 1 | Qualified for automotive applications with operation from −40°C to 125°C ambient and validated reliability under HTOL, TC, and ESD stress - suitable for ADAS sensor modules. |
| Low quiescent current | 60 μA minimum operating current enables use in always-on wake-up circuits with <1 μW standby power overhead. |
| Trimmed Zener-zap process | Fuse and Zener-zap wafer-level trimming ensures ±0.1% initial accuracy without post-package adjustment - improves manufacturing yield and reduces test time. |
| Tolerant of capacitive loads | Stable with >100 nF load capacitance; prevents oscillation in noisy environments like motor-drive feedback paths or switching regulator monitoring. |
Applications
| Portable Instrumentation | Automotive Sensor Calibration |
|---|---|
Use Scenario: Handheld multimeter with 16-bit sigma-delta ADC measuring 0–2.048 V input range. IC Role / Device Role / Timing Role: Shunt reference providing excitation and scaling voltage for ADC reference input and analog front-end gain stages. Use Value: ±0.1% initial tolerance and 50 ppm/°C drift ensure <0.02% full-scale error across −10°C to 50°C handheld operating range. |
Use Scenario: Tire pressure monitoring system (TPMS) ECU calibrating MEMS pressure sensor offset at power-on. IC Role / Device Role / Timing Role: Precision voltage source for ratiometric sensor excitation and ADC reference during cold-start calibration sequence. Use Value: AEC-Q100 Grade 1 qualification and 120 ppm long-term stability guarantee calibration validity over 10-year vehicle lifetime. |
| Industrial Data Acquisition | Precision Audio Level Detection |
Use Scenario: 4-channel isolated analog input module sampling thermocouple and RTD signals at 1 kSPS. IC Role / Device Role / Timing Role: Common reference for multiple 24-bit delta-sigma ADCs sharing single reference rail via low-impedance star point. Use Value: 0.3 Ω dynamic impedance minimizes crosstalk-induced reference droop between channels during simultaneous sampling. |
Use Scenario: Studio-grade audio interface detecting peak signal level before clipping in real-time digital gain control loop. IC Role / Device Role / Timing Role: Stable 2.048 V threshold reference for comparator-based over-range detection feeding FPGA logic. Use Value: 41 μVrms noise floor ensures <−90 dBu detection threshold resolution without false triggers from reference noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C20IDBZR | Same 2.048 V output but C-grade (±0.5% initial tolerance); higher 100 ppm/°C tempco; 65 μVrms noise. | Acceptable for non-critical industrial controls where calibration is performed per unit; not qualified for automotive. | Select when cost sensitivity outweighs accuracy and qualification requirements; verify long-term drift meets system MTBF. |
| ADR3420ARJZ-R7 | 2.048 V series reference; 10 ppm/°C max tempco; requires 1.8 V min supply; 9 μVrms noise; 150 μA quiescent current. | Better noise/tempco but needs dedicated supply rail; unsuitable for shunt-based topologies or low-voltage battery operation. | Choose for ultra-high-precision applications with available headroom; avoid if circuit topology mandates shunt configuration or <2.5 V supply. |
Compared with TL4050C20IDBZR and ADR3420ARJZ-R7, the LM4050QAIM3X2.0/NOPB uniquely combines AEC-Q100 Grade 1 qualification, capacitor-free stability, and micropower operation in a shunt topology - making it the only drop-in solution for automotive and portable instrumentation where board space, supply constraints, and functional safety compliance intersect.
Availability
LM4050QAIM3X2.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor calibration, and industrial data acquisition requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LM4050QAIM3X2.0/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 over 50 years of innovation in precision analog ICs.
The LM4050-N/-Q1 product line delivers high-accuracy, low-power shunt references for space-constrained, battery-operated, and automotive systems demanding long-term stability and qualification rigor.
FAQ
What is the maximum operating current for LM4050QAIM3X2.0/NOPB?
The LM4050QAIM3X2.0/NOPB supports a maximum operating current of 15 mA. This allows it to drive moderate loads directly - such as the reference inputs of multiple ADCs or op-amp bias networks - without external buffering, while maintaining output regulation within specified tolerance and noise limits. Exceeding 15 mA risks exceeding absolute maximum power dissipation limits.
Does LM4050QAIM3X2.0/NOPB require an external output capacitor?
No, the LM4050QAIM3X2.0/NOPB does not require an external output capacitor. Its internal design ensures stability across all capacitive loads, including those exceeding 100 nF. This eliminates capacitor-related BOM cost, board area, and potential failure modes like aging or microphonics - a key advantage over older shunt references.
Is LM4050QAIM3X2.0/NOPB qualified for automotive applications?
Yes, LM4050QAIM3X2.0/NOPB is AEC-Q100 Grade 1 qualified, rated for operation from −40°C to 125°C ambient temperature, and manufactured on an automotive-grade flow. It meets stringent reliability, ESD (±2000 V HBM), and lifetime stability requirements for use in engine control units, ADAS sensors, and body electronics.
What is the long-term stability specification for LM4050QAIM3X2.0/NOPB?
The LM4050QAIM3X2.0/NOPB exhibits 120 ppm reverse breakdown voltage change after 1000 hours of operation at 25°C and 100 μA current. This translates to approximately ±0.25 mV drift for the 2.048 V output - supporting high-reliability applications like medical instrumentation and industrial calibration equipment where infrequent recalibration is mandated.
How does the temperature coefficient affect LM4050QAIM3X2.0/NOPB performance over its full range?
The LM4050QAIM3X2.0/NOPB has a maximum temperature coefficient of 50 ppm/°C over −40°C to 125°C. Across this 165°C span, total drift is bounded to ±8.25 mV (50 ppm/°C × 165°C × 2.048 V), ensuring predictable, linear behavior in automotive and industrial environments without requiring software compensation.
LM4050QAIM3X2.0/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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 34µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QAIM3X2.0/NOPB FAQ
1.How can I place an order for LM4050QAIM3X2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QAIM3X2.0/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 LM4050QAIM3X2.0/NOPB reliable?
The price and inventory of LM4050QAIM3X2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QAIM3X2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QAIM3X2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QAIM3X2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QAIM3X2.0/NOPB?
LM4050QAIM3X2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QAIM3X2.0/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 LM4050QAIM3X2.0/NOPB?
For technical support, including LM4050QAIM3X2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QAIM3X2.0/NOPB requirements.
6.How does Aetrix verify that LM4050QAIM3X2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QAIM3X2.0/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 LM4050QAIM3X2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QAIM3X2.0/NOPB?
All LM4050QAIM3X2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QAIM3X2.0/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 LM4050QAIM3X2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050QAIM3X2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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