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Texas Instruments LM4050BIM3X-4.1/NOPB
- Part No.:
- LM4050BIM3X-4.1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BIM3X-4.1/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,763
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Product details
Overview
LM4050BIM3X-4.1/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering 4.096 V nominal output with ±8.2 mV (±0.2%) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 73 μA to 15 mA, supports capacitive loads without external compensation, and targets high-accuracy analog signal chains in portable instrumentation.
For engineers reviewing the LM4050BIM3X-4.1/NOPB datasheet, LM4050BIM3X-4.1/NOPB pinout, LM4050BIM3X-4.1/NOPB application, or LM4050BIM3X-4.1/NOPB equivalent, this page provides verified electrical specifications, thermal behavior, industrial/extended temperature range operation (−40°C to +125°C), SOT-23 pin mapping, and validated alternative options for precision reference design.
Technical Context
The LM4050BIM3X-4.1/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its dynamic impedance remains ≤0.5 Ω at 1 mA, enabling stable regulation under varying load currents from 73 μA to 15 mA.
It achieves ±0.2% initial accuracy (Grade B) and maintains ≤±22 mV total output variation across −40°C to +125°C industrial extended range. No output capacitor is required, and it tolerates unlimited capacitive loading-critical for ADC reference buffers and low-noise sensor front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal; precise value enables 12-bit DAC/ADC full-scale calibration without scaling resistors. |
| Initial Tolerance | ±8.2 mV (±0.2%) at 25°C; Grade B specification ensures tight system-level offset budgeting. |
| Temp Coefficient | ≤50 ppm/°C max over −40°C to +125°C; guarantees <±1.3 mV drift across full operating range. |
| Operating Current | 73 μA min to 15 mA max; ultra-low start-up current supports battery-powered metering with >10-year shelf life. |
| Output Noise | 93 μVrms (10 Hz–10 kHz); low enough for 16-bit SAR ADC reference without additional filtering. |
| Dynamic Impedance | 0.5 Ω typical at 1 mA; minimizes load-induced voltage shift in multiplexed reference distribution networks. |
| Long-Term Stability | 120 ppm over 1000 hrs; predictable aging behavior simplifies recalibration interval planning. |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Thermal resistance RθJA = 287°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference output node | Connects to regulated voltage rail; sinks all load + reference current; sets output voltage via external resistor divider. |
| Anode (Pin 2) | Common return / ground reference | Must be connected to system ground; defines 0 V reference point for cathode voltage; no internal connection to substrate. |
| NC (Pin 3) | No internal connection | Left floating per datasheet; not bonded; must not be tied to any net to avoid parasitic coupling or mechanical stress. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into space-constrained PCB layouts without stability-compensation components. |
| Tolerates unlimited capacitive loads | Eliminates need for isolation resistors when driving ADC sample-and-hold or op-amp buffers. |
| Fixed 4.096 V output | Matches standard 12-bit full-scale binary (212 = 4096), simplifying ratio-metric sensor interface design. |
| Industrial & extended temp range | Rated for −40°C to +125°C operation-supports automotive under-hood and industrial process control environments. |
| Low 93 μVrms noise | Meets SNR requirements for 16-bit data acquisition systems without post-regulation filtering. |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
|
Use Scenario: Handheld multimeter with 16-bit sigma-delta ADC and lithium coin-cell power supply. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.096 V for ADC full-scale calibration and sensor excitation. Use Value: 73 μA minimum operating current extends battery life beyond 5 years; 50 ppm/°C drift ensures field accuracy without recalibration. |
Use Scenario: Modular DAQ module with multiple 12-bit SAR ADCs sharing a common reference rail. IC Role / Device Role / Timing Role: Primary voltage reference source distributing precision 4.096 V to eight parallel ADCs. Use Value: 0.5 Ω dynamic impedance prevents cross-talk between channels; unlimited capacitive load tolerance avoids series resistors in fanout traces. |
| Process Control Transmitters | Precision Audio Level Meters |
|
Use Scenario: 4–20 mA loop-powered temperature transmitter with HART digital overlay. IC Role / Device Role / Timing Role: Reference for 12-bit DAC generating analog output and for internal RTD measurement bridge. Use Value: −40°C to +125°C rating ensures reliability in boiler rooms and chemical plants; 120 ppm long-term stability reduces maintenance frequency. |
Use Scenario: Studio-grade audio level meter with LED bar graph driven by RMS-to-DC converter. IC Role / Device Role / Timing Role: Low-noise reference for precision rectifier and integrator stages in true-RMS computation. Use Value: 93 μVrms noise floor preserves dynamic range below −100 dBFS; no capacitor requirement simplifies analog signal path layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050C41IDBZR | Same 4.096 V output, but Grade C (±0.5% initial tolerance) and higher 150 μVrms noise; no extended temperature option. | Limited to commercial/industrial −40°C to +85°C; unsuitable for automotive or high-temp industrial use. | Select when cost sensitivity outweighs precision and temperature range requirements. |
| REF43 4.096 | Series reference (not shunt); requires input voltage ≥5.5 V; 35 μVrms noise; 3 ppm/°C drift; SOIC-8 package. | Needs higher supply headroom and board area; superior noise/temp performance but incompatible topology. | Choose only if system already uses series references and can accommodate larger footprint and higher supply overhead. |
Compared with TL4050C41IDBZR, LM4050BIM3X-4.1/NOPB delivers tighter initial accuracy and lower noise in identical SOT-23 footprint; versus REF43 4.096, it offers shunt topology compatibility and smaller size but trades off absolute drift and noise performance.
Availability
LM4050BIM3X-4.1/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and process control transmitters requiring stable component supply with guaranteed long-term continuity and traceable sourcing.
Supply support for LM4050BIM3X-4.1/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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs.
The LM4050-N family was designed for high-accuracy, low-power shunt reference applications in space-constrained, battery-operated, and thermally demanding systems-including industrial sensors, portable test equipment, and automotive subsystems.
FAQ
What is the minimum operating current for LM4050BIM3X-4.1/NOPB?
The LM4050BIM3X-4.1/NOPB requires a minimum operating current of 73 μA at 25°C, rising to 78 μA across the full −40°C to +125°C extended temperature range. This ultra-low current enables multi-year operation from coin-cell batteries in portable instrumentation, and the device remains stable down to this threshold without dropout or oscillation.
Does LM4050BIM3X-4.1/NOPB require an output capacitor?
No, LM4050BIM3X-4.1/NOPB does not require an output capacitor for stability. Its internal design eliminates the need for external compensation, and it tolerates unlimited capacitive loading-making it ideal for driving ADC reference inputs, op-amp buffers, or multiplexed reference distribution networks without added components or layout constraints.
What is the temperature coefficient specification for LM4050BIM3X-4.1/NOPB?
The LM4050BIM3X-4.1/NOPB has a maximum temperature coefficient of 50 ppm/°C over the −40°C to +125°C extended temperature range. At 4.096 V output, this translates to ≤±1.3 mV total drift across the full range-enabling high-accuracy measurements in automotive engine control units and industrial process transmitters without active temperature compensation.
Is LM4050BIM3X-4.1/NOPB qualified for automotive applications?
No, LM4050BIM3X-4.1/NOPB is not AEC-Q100 qualified. It belongs to the industrial-grade LM4050-N series. For automotive use, TI offers the pin-compatible LM4050-N-Q1 variant (e.g., LM4050BIM3X-4.1Q1), which is AEC-Q100 Grade 1 qualified and manufactured on an automotive-grade flow-ensuring reliability under harsh vehicle environmental conditions.
What is the reverse dynamic impedance of LM4050BIM3X-4.1/NOPB?
The reverse dynamic impedance of LM4050BIM3X-4.1/NOPB is 0.5 Ω typical at 1 mA test current (120 Hz, AC current = 10% of DC bias). This low impedance ensures minimal load regulation error (<1 mV) even when sourcing up to 15 mA, making LM4050BIM3X-4.1/NOPB suitable for high-precision reference distribution in multi-channel data acquisition systems.
LM4050BIM3X-4.1/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:
- ±0.2%
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BIM3X-4.1/NOPB FAQ
1.How can I place an order for LM4050BIM3X-4.1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIM3X-4.1/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 LM4050BIM3X-4.1/NOPB reliable?
The price and inventory of LM4050BIM3X-4.1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIM3X-4.1/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050BIM3X-4.1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIM3X-4.1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIM3X-4.1/NOPB?
LM4050BIM3X-4.1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIM3X-4.1/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 LM4050BIM3X-4.1/NOPB?
For technical support, including LM4050BIM3X-4.1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIM3X-4.1/NOPB requirements.
6.How does Aetrix verify that LM4050BIM3X-4.1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050BIM3X-4.1/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 LM4050BIM3X-4.1/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050BIM3X-4.1/NOPB?
All LM4050BIM3X-4.1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIM3X-4.1/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 LM4050BIM3X-4.1/NOPB part is unused and in its original packaging.
Return procedure for LM4050BIM3X-4.1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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