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Texas Instruments LM4050BIM3-2.0/NOPB
- Part No.:
- LM4050BIM3-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BIM3-2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,555
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Product details
Overview
LM4050BIM3-2.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 2.048 V reverse breakdown voltage with ±0.2% initial tolerance (B grade), 50 ppm/°C max temperature coefficient, and 41 μVrms wideband noise (10 Hz–10 kHz). It operates from 60 μA to 15 mA, supports capacitive loads without external compensation, and targets high-accuracy analog signal chains in space-constrained systems.
For engineers reviewing the LM4050BIM3-2.0/NOPB datasheet, LM4050BIM3-2.0/NOPB pinout, LM4050BIM3-2.0/NOPB application, or LM4050BIM3-2.0/NOPB equivalent, key selection considerations include its 2.048 V nominal output, B-grade accuracy, industrial/extended temperature support (−40°C to +125°C), no-output-capacitor operation, and SOT-23 footprint compatibility with low-power, battery-operated instrumentation and data acquisition designs.
Technical Context
The LM4050BIM3-2.0/NOPB uses bandgap-derived Zener-zap trimmed reverse breakdown voltage with curvature-corrected temperature drift compensation. Its shunt architecture requires an external current-setting resistor but eliminates need for output capacitance while maintaining stability across load capacitance variations.
It features low dynamic impedance (0.3 Ω at 1 mA), tight long-term stability (120 ppm after 1000 hrs), and thermal hysteresis of 0.7 mV over −40°C to +125°C cycling - enabling reliable performance in precision ADC/DAC biasing, sensor excitation, and calibration references where voltage drift directly impacts measurement fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal; exact value enables precise 12-bit DAC/ADC full-scale alignment (e.g., 2.048 V = 1 LSB × 211) |
| Initial Tolerance | ±0.2% at 25°C (B grade); reduces calibration burden in production test fixtures |
| Temp Coefficient | ≤50 ppm/°C over −40°C to +125°C; ensures ≤±6.5 mV drift across full range |
| Operating Current | 60 μA min to 15 mA max; supports ultra-low-power sleep modes and high-current reference buffering |
| Noise (10 Hz–10 kHz) | 41 μVrms; contributes <0.002% error in 20-bit systems, critical for high-resolution metrology |
| Dynamic Impedance | 0.3 Ω at 1 mA; minimizes load-induced voltage shift during fast-sampling ADC conversions |
| Long-Term Stability | 120 ppm after 1000 hrs; maintains calibration integrity in unattended field-deployed equipment |
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 operating current plus load current; sets output voltage at this node |
| Anode (Pin 2) | Ground reference / common return | Must be connected to system ground; defines 0 V reference 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 ESD path disruption |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact PCB layouts without stability-compensation components or layout-sensitive decoupling |
| Tolerates capacitive loads | Stable with ≥0 pF load capacitance - eliminates risk of oscillation when driving ADC input caps or long traces |
| Fixed 2.048 V output | Matches binary-weighted scaling (211 × 1 mV); simplifies gain calibration in 12-bit+ data converters |
| Industrial & extended temp range | Specified from −40°C to +125°C; supports automotive under-hood, industrial PLC, and outdoor sensor nodes |
| Low 41 μVrms noise | Preserves SNR in precision audio and instrumentation front-ends without requiring external filtering |
Applications
| Portable Medical Sensors | Data Acquisition Modules |
|---|---|
Use Scenario: Battery-powered wearable ECG/SpO₂ monitors requiring stable analog front-end biasing over multi-year deployment. IC Role / Device Role / Timing Role: Shunt reference providing excitation voltage for precision op-amp instrumentation amplifiers and ADC reference input. Use Value: 60 μA minimum operating current extends battery life; 50 ppm/°C TC ensures <0.5% gain drift across body-temperature variation. |
Use Scenario: 16-bit industrial DAQ systems sampling multiple sensor channels with simultaneous 100 kSPS throughput. IC Role / Device Role / Timing Role: Primary voltage reference for SAR ADCs and programmable-gain amplifier (PGA) bias networks. Use Value: 0.3 Ω dynamic impedance prevents code-dependent reference droop during fast channel switching; 41 μVrms noise avoids degrading ENOB below 15.5 bits. |
| Precision Calibration Equipment | Automotive Battery Monitoring Units |
Use Scenario: Benchtop calibrators verifying multimeter accuracy across −10 V to +10 V ranges using internal DAC-based voltage synthesis. IC Role / Device Role / Timing Role: Stable 2.048 V reference for DAC output scaling and self-test voltage generation circuits. Use Value: 120 ppm long-term stability ensures annual recalibration intervals; ±0.2% initial tolerance eliminates per-unit trim resistors. |
Use Scenario: In-vehicle BMS measuring 12 V lead-acid or 48 V mild-hybrid battery packs with ±10 mV absolute voltage accuracy. IC Role / Device Role / Timing Role: Reference for high-side current sense amplifier and cell-voltage monitoring ADCs. Use Value: −40°C to +125°C operation covers full automotive ambient range; thermal hysteresis ≤0.7 mV prevents offset drift during thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B20IDBZR | Same 2.048 V, ±0.2% tolerance, SOT-23 package; higher 65 μVrms noise; 60 ppm/°C TC (max) | Higher noise limits use in 18-bit+ systems; identical thermal specs enable drop-in replacement in most industrial DAQ | Preferred where TI supply-chain continuity is prioritized; verify noise budget margin before substitution |
| ADR3420BRJZ-R7 | 2.048 V, ±0.1% (A grade), 3 ppm/°C TC (typ), but requires 100 μA min current and 1 μF output cap for stability | Superior TC and accuracy suit metrology-grade instruments; added capacitor increases board area and complicates layout | Select when ultra-low drift dominates over size/power; not suitable for capacitor-free or sub-100 μA designs |
Compared with TL4050B20IDBZR, LM4050BIM3-2.0/NOPB offers lower noise and tighter thermal hysteresis; versus ADR3420BRJZ-R7, it trades absolute accuracy and TC for zero-capacitor simplicity and micropower operation - making it optimal for space- and energy-constrained embedded systems.
Availability
LM4050BIM3-2.0/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition modules, precision calibration equipment, and automotive battery monitoring units requiring stable component supply with guaranteed long-term sourcing.
Supply support for LM4050BIM3-2.0/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 decades of expertise in precision reference design and high-reliability manufacturing.
The LM4050-N series was engineered for space-constrained, low-power precision applications - delivering factory-trimmed shunt references that eliminate external stabilization components while maintaining accuracy across industrial and automotive temperature ranges.
FAQ
What is the exact output voltage and tolerance of LM4050BIM3-2.0/NOPB at 25°C?
The LM4050BIM3-2.0/NOPB has a nominal reverse breakdown voltage of 2.048 V with ±0.2% initial tolerance at 25°C (B grade). This corresponds to a guaranteed range of 2.044 V to 2.052 V under specified test conditions (IR = 100 μA), as confirmed in Section 6.5 of the official TI datasheet SNOS455G.
Does LM4050BIM3-2.0/NOPB require an external output capacitor for stability?
No, LM4050BIM3-2.0/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including zero capacitance - a key differentiator from many competing shunt references. This is explicitly stated in the "Features" section and verified in the "Functional Block Diagram" and "Application Information" sections of the TI datasheet.
What is the minimum operating current for LM4050BIM3-2.0/NOPB across temperature?
The LM4050BIM3-2.0/NOPB requires a minimum operating current of 60 μA at 25°C and 65 μA across the full industrial temperature range (−40°C to +85°C), as specified in Table 6.5 of the SNOS455G datasheet. At extended temperature (−40°C to +125°C), the minimum remains 65 μA.
Can LM4050BIM3-2.0/NOPB be used in automotive applications?
Yes - the LM4050BIM3-2.0/NOPB is qualified for industrial and extended temperature ranges (−40°C to +125°C) and shares the same process and qualification foundation as the AEC-Q100 Grade 1 LM4050-N-Q1 family. While LM4050BIM3-2.0/NOPB itself is not Q100-certified, its electrical specs and thermal robustness align with under-hood and cabin automotive subsystem requirements when validated per customer AEC protocols.
What is the noise performance of LM4050BIM3-2.0/NOPB and how is it measured?
LM4050BIM3-2.0/NOPB delivers 41 μVrms wideband noise over 10 Hz to 10 kHz at IR = 100 μA, as measured and published in Section 6.5 of the TI datasheet. This value is typical and represents integrated RMS noise across the band - critical for high-resolution ADC reference applications where noise directly limits effective number of bits (ENOB).
LM4050BIM3-2.0/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:
- ±0.2%
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BIM3-2.0/NOPB FAQ
1.How can I place an order for LM4050BIM3-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIM3-2.0/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 LM4050BIM3-2.0/NOPB reliable?
The price and inventory of LM4050BIM3-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIM3-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050BIM3-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIM3-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIM3-2.0/NOPB?
LM4050BIM3-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIM3-2.0/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 LM4050BIM3-2.0/NOPB?
For technical support, including LM4050BIM3-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIM3-2.0/NOPB requirements.
6.How does Aetrix verify that LM4050BIM3-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050BIM3-2.0/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 LM4050BIM3-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050BIM3-2.0/NOPB?
All LM4050BIM3-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIM3-2.0/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 LM4050BIM3-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050BIM3-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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