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Texas Instruments TL4050C50QDBZR
- Part No.:
- TL4050C50QDBZR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050C50QDBZR.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,150
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Product details
Overview
TL4050C50QDBZR from Texas Instruments is a precision micropower shunt voltage reference delivering a stable 5.0V output with ±0.5% initial tolerance and ±50ppm/°C temperature coefficient across –40°C to 125°C. It operates from 60μA to 15mA cathode current, exhibits 93μVRMS 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 TL4050C50QDBZR datasheet, TL4050C50QDBZR pinout, TL4050C50QDBZR application, or TL4050C50QDBZR equivalent, key selection criteria include extended-temperature operation, low dynamic impedance (0.5Ω), thermal hysteresis (1.4mV), minimum cathode current (74μA typ), and SOT-23-3 package compatibility for space-constrained embedded systems.
Technical Context
The TL4050C50QDBZR functions as a two-terminal shunt reference, sinking current through its cathode to regulate voltage at the anode node. Its internal bandgap core achieves tight initial accuracy and low drift via curvature-compensated design, with dynamic impedance held below 0.5Ω at 1mA to minimize load-induced output variation.
Characterized over –40°C to 125°C, it delivers guaranteed performance without external capacitors and supports direct connection to ADC/DAC reference inputs-e.g., enabling 1mV LSB resolution in 12-bit systems when paired with 4.096V variants, though TL4050C50QDBZR itself provides 5.0V scaling for 5V-rail applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V nominal at 100μA cathode current; enables direct 5V system rail referencing without scaling resistors. |
| Initial Tolerance | ±0.5% max at 25°C; defines worst-case DC offset in precision measurement front-ends. |
| Temp Coefficient | ±50ppm/°C max over –40°C to 125°C; contributes ≤0.6mV drift across full automotive temperature range. |
| Wideband Noise | 93μVRMS (10Hz–10kHz); limits effective resolution in 16-bit+ ADC systems without additional filtering. |
| Dynamic Impedance | 0.5Ω typical at 1mA; ensures <1mV output shift under 1mA load transients. |
| Cathode Current Range | 74μA min to 15mA max; supports ultra-low-power sensor nodes and higher-current analog circuitry. |
| Thermal Hysteresis | 1.4mV over –40°C ↔ 125°C cycling; quantifies non-recoverable voltage shift after thermal stress. |
Pinout & Package
SOT-23-3 package (DBZ) with gull-wing leads, 1.3mm × 2.9mm footprint, 1.45mm height, and thermal pad omitted. RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode | Current sink terminal | Connected to supply rail via series resistor; regulates voltage at anode by sinking excess current. |
| Anode | Reference output node | Provides stable 5.0V output; must be decoupled locally if driving high-frequency loads. |
| NC (Pin 3) | No-connect terminal | Internally floating; must remain unconnected or tied to cathode per TI's SOT-23 parasitic diode guidance. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates need for output capacitor-reducing BOM count and PCB area in portable designs. |
| Extended temperature range | –40°C to 125°C operation certified for under-hood automotive and industrial control environments. |
| Low micropower consumption | 74μA minimum cathode current enables battery life extension in always-on sensor monitors. |
| Low thermal hysteresis | 1.4mV hysteresis ensures repeatable voltage after thermal cycling-critical for calibration-critical test equipment. |
| High ESD robustness | ±2000V HBM rating protects against handling damage during manual assembly and rework. |
Applications
| Data-Acquisition Systems | Automotive Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution analog input conditioning for industrial PLC modules. IC Role / Device Role / Timing Role: Provides stable 5.0V reference for 16-bit SAR ADCs sampling motor current and temperature sensors. Use Value: ±0.5% tolerance and ±50ppm/°C drift ensure <0.01% full-scale error across operating temperature, meeting IEC 61000-4-30 Class A requirements. |
Use Scenario: Real-time monitoring of 12V battery and 5V MCU rail voltages in ADAS ECUs. IC Role / Device Role / Timing Role: Shunt reference for comparator-based overvoltage/undervoltage detection circuits. Use Value: Stable 5.0V output enables accurate threshold setting independent of supply ripple; 125°C rating supports placement near power stages. |
| Portable Instrumentation | Energy Management Systems |
Use Scenario: Handheld multimeter front-end requiring low-drift reference for autoranging. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope integrator and display driver biasing. Use Value: 93μVRMS noise and 0.5Ω dynamic impedance prevent digit flicker and improve 4½-digit repeatability. |
Use Scenario: Smart meter voltage sensing in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Reference source for isolated sigma-delta ADC measuring grid phase voltages. Use Value: Long-term stability (120ppm/1000h) minimizes field calibration frequency; SOT-23-3 eases conformal coating and creepage compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B50QDBZR | ±0.2% initial tolerance vs. ±0.5% for TL4050C50QDBZR; otherwise identical specs and pinout. | Required where tighter DC accuracy is needed for 14-bit ADC interfaces or factory calibration fixtures. | Select TL4050B50QDBZR when budget allows for improved accuracy without layout change. |
| REF3050AIDBZR | Series reference (not shunt); 5.0V output, ±0.2% tolerance, 50ppm/°C, but requires minimum 35μA supply current and has different pinout. | Suitable for low-noise LDO-based supplies where cathode current sourcing is impractical. | Choose REF3050AIDBZR only if redesign permits series topology and higher quiescent current is acceptable. |
Compared with TL4050B50QDBZR, TL4050C50QDBZR trades 0.3% initial accuracy for lower cost in volume production; versus REF3050AIDBZR, it retains shunt topology advantages-no supply sequencing dependency and inherent current-sinking capability-but lacks series-reference PSRR benefits.
Availability
TL4050C50QDBZR is available at Aetrix Electronics and suitable for automotive power-supply monitors, portable instrumentation, and energy management systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TL4050C50QDBZR 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 industrial-grade components.
The TL4050 series belongs to TI's precision voltage reference product line, engineered for high-accuracy, low-power, and extended-temperature applications in automotive, industrial, and test equipment markets.
FAQ
What is the operating temperature range of the TL4050C50QDBZR?
The TL4050C50QDBZR is characterized for continuous operation from –40°C to +125°C ambient temperature. This extended range is validated per TI's Q-grade qualification standards and makes TL4050C50QDBZR suitable for under-hood automotive applications and industrial control environments where thermal stress is significant.
Does the TL4050C50QDBZR require an output capacitor for stability?
No, the TL4050C50QDBZR does not require an output capacitor for stability. Its internal design ensures unconditional stability with all capacitive loads-including ceramic, tantalum, and electrolytic types-eliminating the need for external bypass components and simplifying layout in space-constrained designs.
What is the minimum cathode current required for proper regulation of the TL4050C50QDBZR?
The TL4050C50QDBZR requires a minimum cathode current of 74μA (typical) at 25°C, rising to 90μA maximum across –40°C to 125°C. Below this threshold, regulation degrades and output voltage deviates beyond specification; designers must size the series resistor accordingly using worst-case supply and load conditions.
How does the thermal hysteresis of TL4050C50QDBZR affect system calibration?
The TL4050C50QDBZR exhibits 1.4mV thermal hysteresis-the voltage shift observed after cycling between –40°C and 125°C and returning to 25°C. This non-recoverable offset impacts absolute accuracy in systems requiring traceable calibration, such as metrology-grade instruments, and must be accounted for in end-of-line test algorithms.
Can TL4050C50QDBZR be used as a replacement for TL4050C50IDBZR in existing designs?
Yes, TL4050C50QDBZR is a direct functional replacement for TL4050C50IDBZR with identical pinout, electrical characteristics, and SOT-23-3 packaging. The only difference is the extended temperature rating (–40°C to 125°C vs. –40°C to 85°C), making TL4050C50QDBZR suitable for upgraded thermal environments without PCB or firmware changes.
TL4050C50QDBZR 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 90 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TL4050C50QDBZR FAQ
1.How can I place an order for TL4050C50QDBZR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050C50QDBZR 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 TL4050C50QDBZR reliable?
The price and inventory of TL4050C50QDBZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050C50QDBZR is usually 5 days.
3.What payment methods are accepted for TL4050C50QDBZR?
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4.How is shipping managed for TL4050C50QDBZR?
TL4050C50QDBZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050C50QDBZR 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 TL4050C50QDBZR?
For technical support, including TL4050C50QDBZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050C50QDBZR requirements.
6.How does Aetrix verify that TL4050C50QDBZR is sourced from the original manufacturer or authorized distributors?
All TL4050C50QDBZR 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 TL4050C50QDBZR meets industry standards.
7.What is the process for return or replacement of TL4050C50QDBZR?
All TL4050C50QDBZR units undergo pre-shipment inspection (PSI). If there is an issue with TL4050C50QDBZR, 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 TL4050C50QDBZR part is unused and in its original packaging.
Return procedure for TL4050C50QDBZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050C50QDBZR Tags
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AZ431LANTR-G1
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