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Texas Instruments TL4050B10QDCKR
- Part No.:
- TL4050B10QDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TL4050B10QDCKR.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,252
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Product details
Overview
TL4050B10QDCKR from Texas Instruments is a precision micropower shunt voltage reference delivering a stable 10V output with ±0.2% initial tolerance and ±50ppm/°C temperature coefficient over –40°C to 125°C. It operates from 60μA to 15mA cathode current, exhibits 150μVRMS wideband noise, and maintains stability with any capacitive load-enabling use in high-accuracy data acquisition and automotive power-supply monitors.
For engineers reviewing the TL4050B10QDCKR datasheet, TL4050B10QDCKR pinout, TL4050B10QDCKR application, or TL4050B10QDCKR equivalent, key selection criteria include extended-temperature operation, low-noise performance, shunt topology compatibility with high-impedance sources, and SC-70 package suitability for space-constrained PCB layouts.
Technical Context
The TL4050B10QDCKR functions as a two-terminal shunt reference, requiring only an external series resistor to regulate voltage across variable loads. Its internal bandgap circuitry achieves tight initial accuracy and low thermal drift without external compensation components.
Designed for direct integration into ADC/DAC reference paths and supply-monitoring circuits, it delivers 10V output with 0.7Ω dynamic impedance at 1mA and supports full-range operation up to 125°C ambient-meeting requirements for industrial and automotive embedded systems where long-term stability and thermal hysteresis (2.8mV) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10V nominal; enables precise 10-bit+ ADC full-scale calibration and 1mV LSB resolution in 10V-range systems |
| Initial Tolerance | ±0.2% max at 25°C; ensures ≤20mV absolute error before temperature or aging effects |
| Temp Coefficient | ±50ppm/°C max over –40°C to 125°C; contributes ≤0.5V drift across full range |
| Noise (10Hz–10kHz) | 150μVRMS typical; limits RMS error to <0.015% of 10V output in sensitive analog front-ends |
| Cathode Current Range | 100μA to 15mA; supports ultra-low-power sensor nodes and high-current reference buffering |
| Dynamic Impedance | 0.7Ω at 1mA; minimizes load-induced voltage sag during transient current demands |
| Thermal Hysteresis | 2.8mV over –40°C ↔ 125°C cycle; defines repeatability error after thermal stress |
Pinout & Package
TL4050B10QDCKR is housed in a 3-pin SC-70 (DCK) package with 0.65mm pitch, optimized for compact PCB layouts and automated assembly. Pin 1 is Cathode, Pin 2 is Anode, and Pin 3 is NC (no connection), per TI's SOT-23/SC-70 pinout standard for shunt references.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Reference output node | Connects to regulated voltage rail; sinks all current (IZ + IL); requires series resistor from supply |
| Anode (Pin 2) | Ground reference terminal | Must be tied to system ground or low-impedance return path; forms reference potential baseline |
| NC (Pin 3) | No internal connection | Must remain unconnected; floating or tied to Anode per TI recommendation to avoid parasitic Schottky conduction |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates need for output bypass capacitor-reducing BOM count and layout sensitivity in battery-powered designs |
| Extended temperature range | –40°C to 125°C operation enables deployment in under-hood automotive modules and industrial PLCs |
| Low micropower operation | 60μA typical minimum cathode current allows use with high-value series resistors in energy-harvesting applications |
| Low thermal hysteresis | 2.8mV max ensures repeatable 10V output after thermal cycling-critical for calibration-critical instrumentation |
| High ESD robustness | ±2000V HBM rating protects against handling damage during manual assembly and field service |
Applications
| Data-Acquisition Systems | Automotive Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution ADC reference in portable multimeters and sensor signal conditioners. IC Role / Device Role / Timing Role: Provides stable 10V reference voltage for 16-bit SAR ADCs, enabling sub-mV measurement accuracy. Use Value: 150μVRMS noise and ±50ppm/°C drift ensure <0.02% total error across operating temperature-meeting Class A metering standards. | Use Scenario: Monitoring 12V battery and alternator output in engine control units. IC Role / Device Role / Timing Role: Shunt reference in comparator-based overvoltage/undervoltage detection circuits. Use Value: Extended –40°C to 125°C rating guarantees reliable trip-point stability across cold cranking and under-hood thermal extremes. |
| Industrial Process Controls | Precision Audio Equipment |
Use Scenario: Reference for 4–20mA transmitter DACs in factory automation I/O modules. IC Role / Device Role / Timing Role: Sets exact full-scale output voltage for current-loop calibration, directly tied to DAC reference input. Use Value: ±0.2% initial tolerance eliminates need for end-of-line trimming, reducing manufacturing test time and cost. | Use Scenario: Reference for digital potentiometers and analog gain stages in studio-grade headphone amplifiers. IC Role / Device Role / Timing Role: Supplies clean, low-noise 10V bias to op-amp feedback networks and VCO tuning lines. Use Value: 150μVRMS noise floor prevents audible hiss modulation in high-gain audio paths, preserving SNR >110dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3010AIDBZR | 10V, ±0.2%, 50ppm/°C, SOT-23-3, but 50μA min current and 42μVRMS noise | Lower noise suits ultra-high-resolution metrology; not qualified to 125°C | Select when noise <50μVRMS is mandatory and ambient stays ≤85°C |
| LM4040B10IDCKR | 10V, ±0.2%, 100ppm/°C, SC-70, 60μA min current, 120μVRMS noise | Higher tempco increases drift by ~0.3V over –40°C to 125°C vs. TL4050B10QDCKR | Select when cost is primary constraint and 100ppm/°C drift is acceptable |
Compared with REF3010AIDBZR and LM4040B10IDCKR, TL4050B10QDCKR uniquely combines 125°C qualification, 150μVRMS noise, and SC-70 packaging-making it optimal for automotive and industrial applications demanding both thermal ruggedness and moderate noise performance.
Availability
TL4050B10QDCKR is available at Aetrix Electronics and suitable for data-acquisition systems, automotive power-supply monitors, and industrial process controls requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL4050B10QDCKR 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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and automotive-grade components.
The TL4050 series was designed specifically for high-accuracy, low-power shunt reference applications in harsh environments-targeting automotive, industrial, and portable instrumentation markets where extended temperature operation and long-term stability are essential.
FAQ
What is the maximum cathode current rating for TL4050B10QDCKR?
The absolute maximum cathode current for TL4050B10QDCKR is 20mA, though the recommended operating range is 100μA to 15mA per datasheet Section 5.1 and 5.11. Exceeding 15mA risks exceeding thermal limits in the SC-70 package, especially above 85°C ambient.
Does TL4050B10QDCKR require an output capacitor for stability?
No, TL4050B10QDCKR does not require an output capacitor for stability. As confirmed in Section 8.1 of the datasheet, it is designed to remain stable with all capacitive loads-including zero capacitance-eliminating the need for external bypass components in most designs.
What is the thermal hysteresis specification for TL4050B10QDCKR?
The thermal hysteresis for TL4050B10QDCKR is 2.8mV, defined as the difference between the 25°C output voltage measured after cycling to –40°C versus after cycling to 125°C. This value is specified in Section 5.11 and impacts repeatability in systems undergoing repeated thermal excursions.
Can TL4050B10QDCKR be used in a 12-bit data-acquisition system?
Yes, TL4050B10QDCKR is suitable for 12-bit data-acquisition systems. With ±0.2% initial tolerance (±20mV) and ±50ppm/°C drift, its total error remains within ±0.5% over –40°C to 125°C-well within the ±0.025% LSB requirement for 12-bit accuracy at 10V full scale.
What is the top-side marking for TL4050B10QDCKR?
The top-side marking for TL4050B10QDCKR is '95_', as documented in Table 9-1 of the datasheet under the –40°C to 125°C, B-grade, 10V, SC-70 ordering information. The final character varies by fabrication site but is not part of the standardized orderable identifier.
TL4050B10QDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 110 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TL4050B10QDCKR FAQ
1.How can I place an order for TL4050B10QDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B10QDCKR 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 TL4050B10QDCKR reliable?
The price and inventory of TL4050B10QDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B10QDCKR is usually 5 days.
3.What payment methods are accepted for TL4050B10QDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050B10QDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050B10QDCKR?
TL4050B10QDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B10QDCKR 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 TL4050B10QDCKR?
For technical support, including TL4050B10QDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B10QDCKR requirements.
6.How does Aetrix verify that TL4050B10QDCKR is sourced from the original manufacturer or authorized distributors?
All TL4050B10QDCKR 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 TL4050B10QDCKR meets industry standards.
7.What is the process for return or replacement of TL4050B10QDCKR?
All TL4050B10QDCKR units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B10QDCKR, 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 TL4050B10QDCKR part is unused and in its original packaging.
Return procedure for TL4050B10QDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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