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Texas Instruments TL4050B10QDCKT
- Part No.:
- TL4050B10QDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TL4050B10QDCKT.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,057
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Product details
Overview
TL4050B10QDCKT 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 monitoring.
For engineers reviewing the TL4050B10QDCKT datasheet, TL4050B10QDCKT pinout, TL4050B10QDCKT application, or TL4050B10QDCKT equivalent, key selection criteria include extended-temperature operation, low-noise performance, minimal bias current requirement, and SOT-23-3 (DCK) package compatibility for space-constrained PCB layouts.
Technical Context
The TL4050B10QDCKT functions as a two-terminal shunt reference, regulating voltage by sinking adjustable cathode current while maintaining fixed reverse breakdown at 10V. Its internal bandgap core achieves tight initial accuracy and low thermal drift via curvature-compensated design, with dynamic impedance of 0.7Ω at 1mA enabling fast transient response in feedback loops.
It requires no external capacitor for stability and supports full-range operation across –40°C to 125°C ambient, validated per TI's extended-temperature qualification. The device's low 100μA typical minimum cathode current and 150μVRMS noise make it suitable for battery-powered instrumentation where power efficiency and signal integrity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10V nominal; enables direct interface with 10-bit+ ADCs requiring precise full-scale reference without scaling resistors. |
| Initial Tolerance | ±0.2% max at 25°C; ensures ≤20mV absolute error in calibration-critical systems like process transmitters. |
| Temp Coefficient | ±50ppm/°C max over –40°C to 125°C; contributes ≤6mV drift across full temperature range, supporting automotive under-hood designs. |
| Noise (10Hz–10kHz) | 150μVRMS; limits quantization uncertainty in 16-bit data acquisition when used with low-noise amplifiers. |
| Cathode Current Range | 100μA (typ) to 15mA; allows flexible biasing in both ultra-low-power sensor nodes and higher-current regulator applications. |
| Dynamic Impedance | 0.7Ω at 1mA; provides rapid correction of load-induced voltage perturbations in closed-loop power supply monitors. |
| Long-Term Stability | 120ppm after 1000h; ensures <0.0012% output drift over time, critical for unattended industrial measurement equipment. |
Pinout & Package
TL4050B10QDCKT is housed in a SC-70 (DCK) 3-pin surface-mount package measuring 2.0mm × 2.1mm × 0.9mm, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Connected to system ground; serves as return path for cathode current and defines 0V reference potential. |
| Cathode (Pin 2) | Output voltage terminal | Delivers regulated 10V; sinks all current drawn from external bias resistor and load, requiring proper RS calculation per application conditions. |
| NC / Floating (Pin 3) | Unused terminal | Internally unconnected; must remain floating or tied to Pin 2 per TI recommendation to avoid parasitic Schottky conduction in SOT-23 variants (not applicable to DCK but retained for consistency). |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates need for output bypass capacitor-reducing BOM count and board area in portable medical sensors. |
| Extended temperature range | –40°C to 125°C operation validated for engine control units and industrial motor drives without derating. |
| Low micropower operation | 100μA typical minimum cathode current enables >10-year battery life in wireless condition-monitoring nodes. |
| Low thermal hysteresis | 2.8mV max after –40°C/125°C cycling ensures repeatable calibration in thermal-cycling test equipment. |
| High ESD robustness | ±2000V HBM rating protects against handling damage during manual assembly of automotive diagnostic tools. |
Applications
| Automotive Power-Supply Monitor | Portable Data Acquisition |
|---|---|
Use Scenario: Monitoring 12V battery rail in ADAS domain controllers to detect brownout/fault conditions. IC Role / Device Role / Timing Role: Shunt reference providing stable 10V reference for comparator threshold generation and ADC input scaling. Use Value: ±0.2% tolerance and ±50ppm/°C drift ensure accurate voltage classification across engine bay temperatures, reducing false fault triggers. | Use Scenario: Battery-powered handheld multimeter with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Precision voltage reference for ADC full-scale calibration and offset compensation. Use Value: 150μVRMS noise and 0.7Ω dynamic impedance preserve effective resolution, while 100μA min current extends battery runtime. |
| Industrial Process Transmitter | Energy Management System |
Use Scenario: 4–20mA loop-powered pressure transmitter operating in chemical plant environments. IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing precise 10V reference for DAC output scaling and sensor excitation. Use Value: Long-term stability (120ppm/1000h) and thermal hysteresis (2.8mV) maintain field calibration integrity over years of continuous operation. | Use Scenario: Smart electricity meter with anti-tampering detection and revenue-grade metrology. IC Role / Device Role / Timing Role: Reference source for polyphase energy measurement ICs requiring traceable 10V reference under varying grid temperatures. Use Value: Extended –40°C to 125°C qualification and ±50ppm/°C tempco meet IEC 62053-21 Class 0.2 accuracy requirements across outdoor mounting conditions. |
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% initial accuracy, 50ppm/°C, but only rated for –40°C to 125°C in A-grade; SC-70 package; 50μA min current. | Lower quiescent current suits ultra-low-power IoT nodes; lacks same long-term stability spec (100ppm/1000h vs. 120ppm). | Select REF3010AIDBZR when minimizing standby current is prioritized over proven field longevity. |
| ADR3410ARJZ-R7 | 10V, ±0.1% initial accuracy, 30ppm/°C, –40°C to 125°C, SOT-23; 120μA min current; 120μVRMS noise. | Higher accuracy and lower tempco benefit metrology-grade instruments; higher min current reduces battery life in portable gear. | Choose ADR3410ARJZ-R7 for lab-grade calibration equipment where 0.1% tolerance outweighs power budget constraints. |
Compared with REF3010AIDBZR and ADR3410ARJZ-R7, TL4050B10QDCKT offers balanced trade-offs: superior long-term stability for industrial deployments, wider operating current range for flexible biasing, and identical extended temperature rating-making it optimal for cost-sensitive automotive and energy metering applications demanding field reliability.
Availability
TL4050B10QDCKT is available at Aetrix Electronics and suitable for automotive power-supply monitors, portable data-acquisition systems, and industrial process transmitters requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TL4050B10QDCKT 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 headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and consumer markets.
TL4050B10QDCKT belongs to TI's precision voltage reference product line, engineered specifically for high-accuracy, low-power, extended-temperature applications including automotive subsystems, portable instrumentation, and industrial automation.
FAQ
What is the maximum cathode current rating for TL4050B10QDCKT?
The absolute maximum cathode current for TL4050B10QDCKT is 20mA, per its Absolute Maximum Ratings table. However, the recommended operating range is 100μA to 15mA to ensure specified electrical performance-including output voltage accuracy, temperature coefficient, and noise-across the full –40°C to 125°C temperature range. Exceeding 15mA may degrade long-term stability or increase thermal stress.
Does TL4050B10QDCKT require an external output capacitor?
No, TL4050B10QDCKT does not require an external output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including direct connection to ADC reference inputs or op-amp feedback networks. Adding a capacitor is optional and only beneficial for additional high-frequency noise filtering-not for loop stability.
How does the thermal hysteresis of TL4050B10QDCKT affect calibration repeatability?
TL4050B10QDCKT exhibits a maximum thermal hysteresis of 2.8mV after cycling between –40°C and 125°C. This means that after extreme temperature exposure, the 10V output may shift by up to ±0.028% upon returning to 25°C. For applications requiring sub-0.01% calibration repeatability-such as metrology-grade test equipment-this hysteresis must be characterized and compensated during system-level calibration routines.
Can TL4050B10QDCKT be used in a series (three-terminal) configuration?
No, TL4050B10QDCKT is strictly a two-terminal shunt reference and cannot function as a series (three-terminal) regulator. It requires an external current-setting resistor between the supply and its cathode, with the anode tied to ground. Attempting to wire it as a series device will result in improper biasing, loss of regulation, and potential device damage due to violation of absolute maximum ratings.
What is the top-side marking for TL4050B10QDCKT?
The top-side marking for TL4050B10QDCKT is "95", as specified in TI's Ordering Information table. This marking appears on the SC-70 (DCK) package and is used for visual identification and traceability during PCB assembly and inspection. The full orderable part number remains TL4050B10QDCKT for procurement and documentation purposes.
TL4050B10QDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
TL4050B10QDCKT FAQ
1.How can I place an order for TL4050B10QDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B10QDCKT 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 TL4050B10QDCKT reliable?
The price and inventory of TL4050B10QDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B10QDCKT is usually 5 days.
3.What payment methods are accepted for TL4050B10QDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050B10QDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050B10QDCKT?
TL4050B10QDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B10QDCKT 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 TL4050B10QDCKT?
For technical support, including TL4050B10QDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B10QDCKT requirements.
6.How does Aetrix verify that TL4050B10QDCKT is sourced from the original manufacturer or authorized distributors?
All TL4050B10QDCKT 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 TL4050B10QDCKT meets industry standards.
7.What is the process for return or replacement of TL4050B10QDCKT?
All TL4050B10QDCKT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B10QDCKT, 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 TL4050B10QDCKT part is unused and in its original packaging.
Return procedure for TL4050B10QDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050B10QDCKT Tags
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TL431BQDBZR
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LM4040DIM3X-2.5/NOPB
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