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Texas Instruments LM4050QBIM3X10/NOPB
- Part No.:
- LM4050QBIM3X10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBIM3X10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,020
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Product details
Overview
LM4050QBIM3X10/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 10.0 V reverse breakdown voltage with ±0.1% initial tolerance (A-grade), 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz) at 150 μA operating current. It serves as a compact, capacitor-free reference for high-accuracy ADCs and sensor signal conditioning in space-constrained industrial systems.
For engineers reviewing the LM4050QBIM3X10/NOPB datasheet, LM4050QBIM3X10/NOPB pinout, LM4050QBIM3X10/NOPB application, or LM4050QBIM3X10/NOPB equivalent, key selection criteria include its 10 V output stability across −40°C to 125°C, no-output-capacitor operation, low 100 μA minimum cathode current, and AEC-Q100 Grade 1 qualification for automotive use cases requiring long-term drift <120 ppm.
Technical Context
The LM4050QBIM3X10/NOPB employs bandgap-based Zener-zap trimmed shunt regulation with curvature-corrected temperature drift compensation, enabling stable 10 V reference performance over wide current (100 μA–15 mA) and temperature (−40°C to 125°C) ranges. Its dynamic impedance remains ≤0.7 Ω at 1 mA, supporting fast load transients without external capacitance.
Unlike series references, this device operates as a two-terminal shunt regulator: cathode sinks current while anode connects to system ground, allowing flexible biasing in both high-side and low-side configurations. The NC pin (Pin 3) is unconnected and must be left floating or tied to anode per TI's DBZ package specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.0 V nominal reverse breakdown voltage, fixed and non-adjustable |
| Initial Tolerance | ±0.1% at 25°C (A-grade), verified by wafer-level fuse/Zener-zap trimming |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C, enabling <±11 mV total drift in industrial range |
| Min Operating Current | 100 μA (at 10 V), defining lowest usable bias for stable regulation |
| Noise (10 Hz–10 kHz) | 150 μVrms, limiting error contribution in 16-bit+ data acquisition systems |
| Dynamic Impedance | 0.7 Ω at 1 mA, ensuring <8 mV load regulation shift across 1–15 mA range |
| Long-Term Stability | 120 ppm after 1000 hrs at 25°C, critical for calibration-critical instrumentation |
Pinout & Package
SOT-23 (DBZ) package, 3-pin surface-mount, body size 2.92 mm × 1.30 mm, thermal resistance RθJA = 287°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage sensing node | Connects to regulated voltage rail; sinks all reference and load current |
| Anode (Pin 2) | Reference ground return | Must be connected to system ground; defines 0 V reference point |
| NC (Pin 3) | No internal connection | Must remain floating or tied to Pin 2 (anode); no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with any capacitive load up to 100 nF, eliminating BOM cost and layout area |
| Fixed 10 V output | Factory-trimmed Zener-zap voltage eliminates external resistor network and calibration effort |
| AEC-Q100 Grade 1 qualified | Validated for automotive applications with junction temperature range −40°C to 125°C |
| Low micropower operation | 100 μA minimum cathode current enables battery life extension in portable instrumentation |
| Tolerates capacitive loads | Stable under 0–100 nF output capacitance, simplifying filtering for noise-sensitive analog front-ends |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 24-bit sigma-delta ADC requiring stable reference under varying battery voltage. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 10 V reference for ADC full-scale calibration. Use Value: Enables ±0.1% measurement accuracy over −10°C to 50°C ambient without recalibration due to 50 ppm/°C tempco and 120 ppm long-term drift. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals with 16-bit resolution. IC Role / Device Role / Timing Role: Precision reference for programmable gain instrumentation amplifier and SAR ADC reference input. Use Value: Delivers 150 μVrms noise floor and <8 mV load regulation, preserving ENOB >15.2 bits across full current range. |
| Automotive Sensor Modules | Precision Audio Power Supplies |
Use Scenario: Engine control unit (ECU) pressure sensor signal conditioner operating in under-hood environment. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 shunt reference supplying stable bias to op-amp based ratiometric amplifiers. Use Value: Maintains ±0.1% initial accuracy and <±11 mV total drift over −40°C to 125°C, meeting ASIL-B functional safety margin requirements. |
Use Scenario: High-fidelity DAC power supply rail where reference ripple directly modulates audio output. IC Role / Device Role / Timing Role: Low-noise 10 V reference for dual-supply op-amp biasing in Class-A headphone amplifier feedback path. Use Value: 150 μVrms noise (10 Hz–10 kHz) prevents audible hiss; 0.7 Ω dynamic impedance suppresses supply-induced intermodulation distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5010IDR | Series reference; 10 V output, 3 ppm/°C tempco, requires input capacitor and higher quiescent current (1.1 mA) | Used where input-to-output dropout headroom exists and ultra-low drift is prioritized over power | Select REF5010IDR only if system can accommodate 1.1 mA supply current and ≥1.5 V input headroom |
| ADR4510BRZ | Series reference; 10 V output, 3 ppm/°C tempco, 1.4 mA quiescent current, SOIC-8 package | Preferred in lab equipment where board space is less constrained and lowest possible drift is mandatory | Choose ADR4510BRZ when PCB real estate allows SOIC-8 and long-term stability <10 ppm/1000 hrs is required |
Compared with REF5010IDR and ADR4510BRZ, LM4050QBIM3X10/NOPB offers the smallest footprint (SOT-23), lowest power (100 μA min), and shunt topology flexibility-but trades off absolute drift performance for size and efficiency in embedded and automotive applications.
Availability
LM4050QBIM3X10/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and precision data acquisition systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4050QBIM3X10/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 90 years of innovation in precision analog ICs and automotive-grade components.
The LM4050-N family was designed specifically for space-constrained, high-accuracy applications demanding micropower shunt references with zero-output-capacitor operation and AEC-Q100 qualification-targeting industrial, automotive, and portable test equipment markets.
FAQ
What is the minimum cathode current required for stable regulation of LM4050QBIM3X10/NOPB?
The LM4050QBIM3X10/NOPB requires a minimum cathode current of 100 μA to maintain regulation within specifications. This value is confirmed in Section 6.10 of the TI datasheet (SNOS455G) for the 10-V option under recommended operating conditions. Below 100 μA, output voltage may deviate beyond the ±0.1% initial tolerance, especially at temperature extremes. LM4050QBIM3X10/NOPB achieves stable operation at this low current due to optimized Zener-zap trimming and bandgap curvature correction.
Does LM4050QBIM3X10/NOPB require an external output capacitor for stability?
No, LM4050QBIM3X10/NOPB does not require an external output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load from 0 to 100 nF, as explicitly stated in the "Features" section of the TI datasheet. This eliminates BOM cost and PCB area typically needed for series references. LM4050QBIM3X10/NOPB maintains phase margin and avoids oscillation even when driving large ceramic decoupling caps directly at its cathode node.
Is LM4050QBIM3X10/NOPB qualified for automotive applications?
Yes, LM4050QBIM3X10/NOPB is AEC-Q100 Grade 1 qualified, meaning it is rated for operation from −40°C to +125°C junction temperature and has passed stress testing for automotive reliability. This qualification is documented in the "Features" and "Device Information" sections of the TI datasheet. LM4050QBIM3X10/NOPB meets requirements for engine control, transmission, and ADAS sensor modules where long-term stability and thermal robustness are critical.
What is the typical wideband noise performance of LM4050QBIM3X10/NOPB?
The LM4050QBIM3X10/NOPB delivers 150 μVrms wideband noise over 10 Hz to 10 kHz at 150 μA operating current, as specified in Section 6.10 of the TI datasheet. This noise level directly impacts effective number of bits (ENOB) in high-resolution ADC systems. LM4050QBIM3X10/NOPB achieves this performance through low-noise Zener structure and on-chip filtering, making it suitable for 16-bit+ data acquisition where reference noise dominates system error budget.
How does the temperature coefficient of LM4050QBIM3X10/NOPB affect accuracy over its full operating range?
LM4050QBIM3X10/NOPB has a maximum temperature coefficient of 50 ppm/°C over −40°C to +125°C. For a 10 V output, this translates to a worst-case drift of ±11 mV over the industrial range (−40°C to +85°C) and ±15 mV over the extended range (−40°C to +125°C), calculated as ±50 ppm/°C × ΔT × 10 V. LM4050QBIM3X10/NOPB uses curvature-corrected bandgap design to minimize parabolic drift, ensuring linearized error behavior critical for calibration-critical instrumentation.
LM4050QBIM3X10/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):
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QBIM3X10/NOPB FAQ
1.How can I place an order for LM4050QBIM3X10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBIM3X10/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 LM4050QBIM3X10/NOPB reliable?
The price and inventory of LM4050QBIM3X10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBIM3X10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBIM3X10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBIM3X10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBIM3X10/NOPB?
LM4050QBIM3X10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBIM3X10/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 LM4050QBIM3X10/NOPB?
For technical support, including LM4050QBIM3X10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBIM3X10/NOPB requirements.
6.How does Aetrix verify that LM4050QBIM3X10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBIM3X10/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 LM4050QBIM3X10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBIM3X10/NOPB?
All LM4050QBIM3X10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBIM3X10/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 LM4050QBIM3X10/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBIM3X10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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