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Texas Instruments LM4050BIM3X-10
- Part No.:
- LM4050BIM3X-10
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BIM3X-10.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,364
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Product details
Overview
LM4050BIM3X-10 from Texas Instruments is a precision micropower shunt voltage reference with 10 V nominal reverse breakdown voltage, ±0.2% initial tolerance (B-grade), 50 ppm/°C max temperature coefficient, and 100 μA minimum operating current. It operates across −40°C to 125°C and delivers stable reference voltage in space-constrained analog signal chains and data acquisition front-ends.
For engineers reviewing the LM4050BIM3X-10 datasheet, LM4050BIM3X-10 pinout, LM4050BIM3X-10 application, or LM4050BIM3X-10 equivalent, this device serves as a low-noise, capacitor-tolerant, SOT-23 shunt reference for high-accuracy ADC/DAC biasing, portable instrumentation, and automotive-grade sensor conditioning where layout simplicity and thermal stability are critical.
Technical Context
The LM4050BIM3X-10 uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its dynamic impedance remains below 0.7 Ω at 1 mA, enabling stable regulation under varying load currents from 100 μA to 15 mA.
It requires no output capacitor and tolerates arbitrary capacitive loads-unlike series references-due to inherent stability over full operating current and temperature ranges. The device achieves 150 μVrms wideband noise (10 Hz–10 kHz) at 150 μA bias and exhibits ≤2.8 mV thermal hysteresis over −40°C to 125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V nominal reverse breakdown voltage, verified at 150 μA test current |
| Initial Tolerance | ±0.2% at 25°C (B-grade), enabling direct use in 12-bit system references without trimming |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C, limiting drift to ±5 mV across full range |
| Min Operating Current | 100 μA (typical), supporting ultra-low-power battery-operated designs |
| Dynamic Impedance | 0.7 Ω max at 1 mA, ensuring <1 mV load regulation error up to 15 mA |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz), suitable for precision 16-bit ADC reference applications |
| Long-Term Stability | 120 ppm (1000 hrs), minimizing calibration drift in field-deployed equipment |
Pinout & Package
SOT-23 (DBZ) package: 3-pin surface-mount, 2.92 mm × 1.30 mm body size, JEDEC standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference output node | Connects to supply rail; sinks all reference current plus load current; voltage appears here relative to Anode |
| Anode (Pin 2) | Reference ground return | Must be connected to system ground; defines 0 V reference point for output voltage |
| 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 | Eliminates external stabilization cap while maintaining stability with any capacitive load - reduces BOM count and board area |
| Fixed 10 V breakdown | Factory-trimmed Zener-zap voltage eliminates need for external resistor networks or trimming potentiometers |
| Industrial & extended temp support | Specified from −40°C to 125°C, enabling use in automotive engine control units and industrial PLC I/O modules |
| Low 100 μA min current | Enables operation from microamp-level bias sources - ideal for energy-harvesting and coin-cell-powered sensors |
| ESD robustness | ±2000 V HBM rating ensures reliability during automated assembly and field handling |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC and battery-powered operation. IC Role / Device Role / Timing Role: Shunt reference providing stable 10 V reference for ADC full-scale calibration. Use Value: 100 μA min current enables >1-year battery life; ±0.2% tolerance avoids factory recalibration. |
Use Scenario: Industrial DAQ module digitizing 4–20 mA sensor loops with 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Precision voltage reference for ADC reference input and analog front-end gain-setting resistors. Use Value: 50 ppm/°C tempco ensures <±5 mV drift over cabinet temperature swings; 150 μVrms noise preserves ENOB. |
| Automotive Sensor Conditioning | Precision Audio Biasing |
Use Scenario: Engine coolant temperature sensor signal conditioner in AEC-Q100-compliant ECU. IC Role / Device Role / Timing Role: Stable 10 V reference for ratiometric RTD bridge excitation and ADC reference. Use Value: Extended −40°C to 125°C range matches under-hood thermal profile; 120 ppm long-term stability maintains accuracy over vehicle lifetime. |
Use Scenario: High-fidelity audio DAC requiring ultra-low-noise analog supply rails. IC Role / Device Role / Timing Role: Low-noise shunt reference generating clean 10 V bias for op-amp gain stages and DAC reference buffers. Use Value: 150 μVrms noise (10 Hz–10 kHz) prevents audible hiss; no-output-capacitor design avoids ceramic microphonic artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B10IDBZR | Same 10 V, ±0.2%, SOT-23 package; 100 μA min current; 150 μVrms noise; TI's newer-generation variant with identical pinout and specs | Identical functional replacement; qualified for same industrial/automotive temp ranges | Select when seeking latest TI process revision with enhanced ESD (±3000 V HBM) and tighter lot-to-lot consistency |
| REF5010AIDR | 10 V series reference; ±0.05% initial accuracy; 3 ppm/°C tempco; requires output capacitor; 1.2 mA quiescent current | Higher accuracy and lower drift, but larger solution size and higher power draw | Choose only if sub-10 ppm total error budget demands exceed LM4050BIM3X-10 capability - not drop-in compatible |
Compared with TL4050B10IDBZR, LM4050BIM3X-10 offers identical electrical performance and pin compatibility but reflects an earlier production revision; compared with REF5010AIDR, it trades absolute accuracy and drift for micropower operation, capacitor-free layout, and smaller footprint - making it optimal for cost- and space-sensitive 12–16 bit systems.
Availability
LM4050BIM3X-10 is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and automotive sensor conditioning requiring stable component supply, long-lifecycle continuity, and traceable sourcing.
Supply support for LM4050BIM3X-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 decades of expertise in precision reference design.
The LM4050-N product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated, and thermally demanding applications - including portable test equipment, automotive subsystems, and industrial measurement systems.
FAQ
What is the minimum operating current for LM4050BIM3X-10?
The LM4050BIM3X-10 requires a minimum operating current of 100 μA to maintain regulation within specification. This value is confirmed in Section 6.10 of the datasheet under "Minimum Operating Current" for the 10-V option at TA = TJ = 25°C. Below this current, reverse breakdown voltage may deviate beyond the ±0.2% initial tolerance band.
Does LM4050BIM3X-10 require an output capacitor?
No, LM4050BIM3X-10 does not require an output capacitor. Its internal design ensures stability with any capacitive load, eliminating the need for external stabilization components - a key advantage over many series references and older shunt devices. This is explicitly stated in the Features section and validated in the Functional Block Diagram and Application Information sections.
What is the temperature coefficient of LM4050BIM3X-10?
The LM4050BIM3X-10 has a maximum average temperature coefficient of 50 ppm/°C over the full operating range of −40°C to 125°C. This value is specified in the Electrical Characteristics table for the 10-V option and directly determines worst-case voltage drift: ±5 mV over the full temperature span (10 V × 50 ppm/°C × 165°C).
Is LM4050BIM3X-10 suitable for automotive applications?
LM4050BIM3X-10 is rated for extended temperature operation up to 125°C and meets industrial specifications, but it is not AEC-Q100 qualified. For automotive applications requiring qualification, the pin-compatible LM4050BIM3X-10-Q1 variant (not this part number) must be used - it shares identical electrical specs but undergoes additional automotive flow validation.
What is the wideband noise performance of LM4050BIM3X-10?
The LM4050BIM3X-10 delivers 150 μVrms wideband noise over the 10 Hz to 10 kHz frequency range, measured at 150 μA operating current. This noise level is documented in Section 6.10 (Electrical Characteristics: 10-V Option) and supports high-resolution ADC applications up to 16-bit effective resolution without degrading SNR.
LM4050BIM3X-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:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- 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
LM4050BIM3X-10 FAQ
1.How can I place an order for LM4050BIM3X-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIM3X-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 LM4050BIM3X-10 reliable?
The price and inventory of LM4050BIM3X-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIM3X-10 is usually 5 days.
3.What payment methods are accepted for LM4050BIM3X-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIM3X-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIM3X-10?
LM4050BIM3X-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIM3X-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 LM4050BIM3X-10?
For technical support, including LM4050BIM3X-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIM3X-10 requirements.
6.How does Aetrix verify that LM4050BIM3X-10 is sourced from the original manufacturer or authorized distributors?
All LM4050BIM3X-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 LM4050BIM3X-10 meets industry standards.
7.What is the process for return or replacement of LM4050BIM3X-10?
All LM4050BIM3X-10 units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIM3X-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 LM4050BIM3X-10 part is unused and in its original packaging.
Return procedure for LM4050BIM3X-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050BIM3X-10 Tags
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