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Texas Instruments LM4050AIM3X-10
- Part No.:
- LM4050AIM3X-10
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050AIM3X-10.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,593
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Product details
Overview
LM4050AIM3X-10 from Texas Instruments is a precision micropower shunt voltage reference with 10 V nominal reverse breakdown voltage, ±0.1% initial tolerance (A grade), 50 ppm/°C max temperature coefficient, and operates from 100 μA to 15 mA over −40°C to 85°C. It serves as a stable voltage reference in analog-to-digital converters and portable instrumentation.
For engineers reviewing the LM4050AIM3X-10 datasheet, LM4050AIM3X-10 pinout, LM4050AIM3X-10 application, or LM4050AIM3X-10 equivalent, key selection criteria include output voltage accuracy at low current, thermal hysteresis (<2.8 mV), dynamic impedance (0.7 Ω), noise performance (150 μVrms, 10 Hz–10 kHz), and SOT-23 package compatibility with space-constrained PCB layouts.
Technical Context
The LM4050AIM3X-10 uses bandgap reference architecture with curvature-corrected temperature drift compensation and Zener-zap trim for initial voltage accuracy. Its shunt topology requires an external series resistor to set operating current and regulates by sinking variable current to maintain 10 V across its cathode-anode terminals.
It achieves stability without output capacitance and tolerates arbitrary capacitive loads due to low dynamic impedance (0.7 Ω at 1 mA) and inherent phase margin design. The device supports industrial temperature operation (−40°C to 85°C) and exhibits 120 ppm long-term stability after 1000 hours.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V nominal reverse breakdown voltage, verified at 150 μA test current |
| Initial Tolerance | ±0.1% at 25°C (A grade), enabling high-accuracy calibration without trimming |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 85°C, limiting worst-case drift to ±3.25 mV |
| Min Operating Current | 100 μA (typical), allowing ultra-low-power biasing in battery systems |
| Dynamic Impedance | 0.7 Ω at 1 mA, ensuring <8 mV load regulation error across 1–15 mA range |
| Output Noise | 150 μVrms (10 Hz–10 kHz), suitable for 16-bit ADC reference applications |
| Long-Term Stability | 120 ppm after 1000 hrs, supporting reliable performance in field-deployed equipment |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Reference output node | Connects to regulated 10 V node; sinks current proportional to load demand |
| Anode (Pin 2) | Common return path | Must be connected to system ground; forms reference return for all downstream circuitry |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no PCB trace or solder required |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact layouts without stability-compromising external C |
| Tolerates capacitive loads | Supports direct connection to ADC input caps or LDO bypass networks up to 10 μF |
| Fixed 10 V breakdown voltage | Eliminates need for external resistor dividers in 10 V reference designs |
| Low 100 μA minimum current | Reduces quiescent power in always-on sensor nodes and energy-harvesting systems |
| Industrial temperature range | Validated operation from −40°C to 85°C ensures reliability in factory automation and outdoor electronics |
Applications
| Portable, Battery-Powered Equipment | Data Acquisition Systems |
|---|---|
Use Scenario: Precision voltage reference for handheld multimeters and IoT sensor nodes powered by coin cells or Li-ion batteries. IC Role / Device Role / Timing Role: Shunt reference providing stable 10 V reference for 16-bit SAR ADCs and low-power microcontroller analog peripherals. Use Value: 100 μA minimum current enables >1-year battery life; 150 μVrms noise ensures ≤0.02% measurement uncertainty. | Use Scenario: Calibration-grade reference in modular data loggers acquiring thermocouple, strain gauge, and RTD signals. IC Role / Device Role / Timing Role: Primary voltage reference for multiplexed 24-bit delta-sigma ADC front-ends requiring sub-ppm stability. Use Value: ±0.1% initial tolerance and 50 ppm/°C TC enable single-point calibration across full industrial temperature range. |
| Instrumentation | Process Control |
Use Scenario: Reference source in benchtop oscilloscopes and signal generators where output accuracy directly impacts measurement fidelity. IC Role / Device Role / Timing Role: Stable 10 V reference for DAC output buffers and programmable gain amplifier offset correction circuits. Use Value: 120 ppm long-term stability minimizes recalibration frequency; 2.8 mV thermal hysteresis prevents measurement repeatability errors. | Use Scenario: Voltage reference in PLC analog I/O modules interfacing with 4–20 mA transmitters and industrial sensors. IC Role / Device Role / Timing Role: Precision shunt reference for isolated ADC inputs and loop-powered sensor excitation circuits. Use Value: SOT-23 footprint allows dense channel packing; 15 mA max current supports driving multiple isolation amplifiers simultaneously. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM3X-10 | ±0.5% initial tolerance, higher 100 ppm/°C TC, 75 μA min current | Lower accuracy; suited for non-critical biasing, not metrology-grade DAQ | Select when cost sensitivity outweighs precision requirements |
| REF5010AIDR | Series topology, 10 V output, ±0.05% tolerance, 3 ppm/°C TC, requires input capacitor | Higher accuracy and lower drift, but larger SOIC-8 package and higher quiescent current (1.1 mA) | Choose for lab-grade instruments where ultimate stability justifies size and power penalty |
Compared with LM4040CIM3X-10, the LM4050AIM3X-10 delivers 5× tighter initial tolerance and half the tempco, enabling single-point calibration in portable test gear; versus REF5010AIDR, it trades 20× lower quiescent current and SOT-23 size for relaxed absolute accuracy-ideal for space- and power-constrained embedded systems.
Availability
LM4050AIM3X-10 is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, precision analog front-ends, and battery-powered sensor nodes requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050AIM3X-10 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, embedded processing, and connectivity technologies with over 50 years of innovation in precision analog ICs.
The LM4050-N product line delivers micropower shunt voltage references optimized for space-constrained, low-current applications including portable medical devices, handheld test equipment, and industrial sensor interfaces.
FAQ
What is the minimum operating current for LM4050AIM3X-10?
The LM4050AIM3X-10 has a typical minimum operating current of 100 μA at 25°C, with a maximum of 103 μA across the industrial temperature range (−40°C to 85°C). This low current enables use in ultra-low-power applications such as battery-backed memory supervisors and energy-harvesting sensor nodes where the LM4050AIM3X-10 maintains regulation without excessive drain.
Does LM4050AIM3X-10 require an output capacitor for stability?
No, the LM4050AIM3X-10 does not require an output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including direct connection to ADC input capacitors or LDO bypass networks. This eliminates board space and BOM cost associated with external stabilization components while maintaining regulation integrity for the LM4050AIM3X-10 across its full operating range.
What is the thermal hysteresis specification for LM4050AIM3X-10?
The LM4050AIM3X-10 exhibits a thermal hysteresis of 2.8 mV, measured as the voltage difference at 25°C after cycling between −40°C and 125°C. This parameter directly impacts repeatability in cyclic temperature environments-such as outdoor industrial enclosures-where the LM4050AIM3X-10 must deliver consistent 10 V reference performance across operational thermal cycles without recalibration.
Can LM4050AIM3X-10 be used in automotive applications?
The LM4050AIM3X-10 is rated for industrial temperature range (−40°C to 85°C) and is not AEC-Q100 qualified. For automotive applications, TI offers the LM4050-N-Q1 variant (e.g., LM4050QAIM3X-10), which is AEC-Q100 Grade 1 qualified and manufactured on an automotive-grade flow. The LM4050AIM3X-10 itself is intended for industrial and commercial systems, not safety-critical vehicle subsystems.
What is the reverse dynamic impedance of LM4050AIM3X-10?
The reverse dynamic impedance of the LM4050AIM3X-10 is 0.7 Ω, measured at 1 mA DC current with 0.1 mA AC ripple at 120 Hz. This low impedance ensures minimal output voltage variation under changing load conditions-critical when the LM4050AIM3X-10 supplies reference voltage to multiple downstream circuits-and contributes to its tight load regulation performance across 1–15 mA operating range.
LM4050AIM3X-10 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:
- Discontinued at Digi-Key
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050AIM3X-10 FAQ
1.How can I place an order for LM4050AIM3X-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050AIM3X-10 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 LM4050AIM3X-10 reliable?
The price and inventory of LM4050AIM3X-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050AIM3X-10 is usually 5 days.
3.What payment methods are accepted for LM4050AIM3X-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050AIM3X-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050AIM3X-10?
LM4050AIM3X-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050AIM3X-10 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 LM4050AIM3X-10?
For technical support, including LM4050AIM3X-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050AIM3X-10 requirements.
6.How does Aetrix verify that LM4050AIM3X-10 is sourced from the original manufacturer or authorized distributors?
All LM4050AIM3X-10 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 LM4050AIM3X-10 meets industry standards.
7.What is the process for return or replacement of LM4050AIM3X-10?
All LM4050AIM3X-10 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050AIM3X-10, 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 LM4050AIM3X-10 part is unused and in its original packaging.
Return procedure for LM4050AIM3X-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050AIM3X-10 Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
Diodes Incorporated
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