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Texas Instruments TL4050B10QDBZR
- Part No.:
- TL4050B10QDBZR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050B10QDBZR.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,408
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Product details
Overview
TL4050B10QDBZR from Texas Instruments is a precision micropower shunt voltage reference delivering a stable 10V output with ±0.2% initial tolerance (max), 50ppm/°C temperature coefficient (max), 150μVRMS wideband noise, and operation across –40°C to 125°C. It functions as a two-terminal reference in analog signal chains for high-accuracy data acquisition and power-supply monitoring.
For engineers reviewing the TL4050B10QDBZR datasheet, TL4050B10QDBZR pinout, TL4050B10QDBZR application, or TL4050B10QDBZR equivalent, key selection criteria include its extended-temperature-grade B-tolerance performance, low-noise 10V reference capability, SOT-23-3 package compatibility, and cathode-current operating range of 100μA to 15mA.
Technical Context
The TL4050B10QDBZR implements a bandgap-based shunt topology with low dynamic impedance (0.7Ω at 1mA) and inherent stability across all capacitive loads-no external capacitor required. Its thermal hysteresis is specified at 2.8mV over –40°C to 125°C cycling.
It operates as a two-terminal device: anode tied to system ground and cathode connected via series resistor to supply, enabling precise current-sourced biasing. The reference maintains output stability over cathode currents from 100μA (min) to 15mA (max) and supports long-term drift of ≤120ppm after 1000 hours.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10V nominal at 100μA cathode current; enables direct LSB matching for 10-bit+ ADCs referenced to 10V full-scale. |
| Initial Tolerance | ±0.2% max at 25°C; ensures ≤±20mV absolute error without calibration in production systems. |
| Temp Coefficient | 50ppm/°C max over –40°C to 125°C; contributes ≤±0.5V drift across full temperature range. |
| Noise (10Hz–10kHz) | 150μVRMS typical; limits RMS voltage error in precision measurement front-ends. |
| Cathode Current Range | 100μA to 15mA; allows flexible biasing in low-power sensor nodes and high-current reference buffers. |
| Dynamic Impedance | 0.7Ω at 1mA, 120Hz; minimizes load-induced output variation during transient current demand. |
| Thermal Hysteresis | 2.8mV over –40°C ↔ 125°C cycle; defines repeatability error when ambient temperature swings widely. |
Pinout & Package
SOT-23-3 package (DBZ) with standard pinout: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC (no internal connection; must be left floating or tied to Pin 2 per TI guidance due to parasitic Schottky diode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode) | Reference output node | Connected to series resistor from supply; sinks total current (IZ + IL); voltage develops across external load. |
| Pin 2 (Anode) | Ground reference terminal | Tied directly to system ground; establishes 0V reference for output voltage regulation. |
| Pin 3 (NC) | No internal connection | Must remain unconnected or shorted to Pin 2; floating Pin 3 avoids unintended conduction via internal Schottky diode. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates need for output bypass capacitor-reduces BOM count and PCB area in space-constrained designs. |
| Extended temperature grade | Rated for –40°C to 125°C operation, qualifying for under-hood automotive and industrial control applications. |
| Low micropower consumption | Minimum cathode current of 100μA enables battery-powered instrumentation with multi-year runtime. |
| Low thermal hysteresis | 2.8mV hysteresis ensures repeatable 10V output after thermal cycling-critical for metrology-grade calibration. |
| High ESD robustness | ±2000V HBM rating protects against handling damage during assembly and field service. |
Applications
| Data Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution ADC reference in portable multimeters and sensor transmitters. IC Role / Device Role / Timing Role: Provides stable 10V reference voltage for 12-bit+ SAR ADCs, defining full-scale accuracy. Use Value: ±0.2% tolerance and 150μVRMS noise enable ≤0.05% total unadjusted error in 10V-referenced measurements. | Use Scenario: Precision feedback reference in isolated DC-DC converters and programmable power supplies. IC Role / Device Role / Timing Role: Shunt reference in optocoupler feedback loop to regulate output voltage within ±0.5%. Use Value: 50ppm/°C tempco ensures <±0.3% output drift over industrial temperature range, improving supply stability. |
| Automotive Electronics | Battery-Powered Equipment |
Use Scenario: Reference for engine control unit (ECU) analog sensors and diagnostics circuits. IC Role / Device Role / Timing Role: Stable 10V reference for fuel injector current sensing and knock sensor signal conditioning. Use Value: –40°C to 125°C qualification and 2.8mV thermal hysteresis ensure consistent sensor calibration across vehicle life. | Use Scenario: Voltage reference in handheld test equipment and portable medical monitors. IC Role / Device Role / Timing Role: Low-current 10V reference enabling >5-year battery life in 3.7V Li-ion powered devices. Use Value: 100μA minimum cathode current allows use with ultra-low-quiescent LDOs and energy-harvesting power paths. |
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 tolerance, 50ppm/°C, but only rated for –40°C to 125°C in A-grade; SOT-23-3 package. | Same pinout and basic specs, but lacks Q-grade extended-temp validation; not qualified for automotive under-hood use. | Select REF3010AIDBZR only if ambient temperature stays ≤85°C and automotive qualification is unnecessary. |
| LM4040B10IDBZR | 10V, ±0.2% tolerance, 100ppm/°C tempco, 300μVRMS noise, –40°C to 125°C; SOT-23-3 package. | Higher tempco and noise limit use in high-precision metrology; suitable for cost-sensitive industrial controls. | Choose LM4040B10IDBZR where 100ppm/°C drift and higher noise are acceptable, and BOM cost is prioritized. |
Compared with REF3010AIDBZR and LM4040B10IDBZR, TL4050B10QDBZR delivers superior thermal stability (50ppm/°C vs. 100ppm/°C) and lower noise (150μVRMS vs. 300μVRMS), making it optimal for high-accuracy 10V reference applications requiring extended-temperature reliability.
Availability
TL4050B10QDBZR is available at Aetrix Electronics and suitable for data-acquisition systems, automotive electronics, and battery-powered equipment requiring stable component supply across extended temperature ranges.
Supply support for TL4050B10QDBZR 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 voltage references and power management ICs.
The TL4050 series was designed specifically for high-accuracy, low-power shunt reference applications in industrial, automotive, and portable instrumentation-emphasizing stability, noise performance, and extended-temperature reliability.
FAQ
What is the maximum cathode current rating for TL4050B10QDBZR?
The absolute maximum cathode current for TL4050B10QDBZR is 15mA, as specified in the Absolute Maximum Ratings table. Exceeding this value risks permanent damage. For reliable operation, cathode current should be maintained between 100μA (minimum) and 15mA (maximum), with optimal stability achieved above 1mA per electrical characteristics tables.
Does TL4050B10QDBZR require an output capacitor for stability?
No, TL4050B10QDBZR does not require an output capacitor for stability. Its design is inherently stable with all capacitive loads-including no capacitor-making it ideal for space-constrained and low-BOM-count applications. Adding a capacitor is optional and will not degrade performance.
What is the thermal hysteresis specification for TL4050B10QDBZR?
TL4050B10QDBZR has a thermal hysteresis of 2.8mV, defined as the difference in 25°C output voltage measured after cycling from –40°C versus after cycling from 125°C. This parameter quantifies repeatability error in systems subject to wide ambient temperature swings.
Can TL4050B10QDBZR be used in automotive under-hood applications?
Yes, TL4050B10QDBZR is explicitly characterized for operation from –40°C to 125°C (Q-grade) and is qualified for automotive under-hood environments. Its 50ppm/°C tempco, 2.8mV thermal hysteresis, and ±2000V HBM ESD rating meet key requirements for engine control and sensor interface modules.
How does the noise performance of TL4050B10QDBZR compare to other 10V shunt references?
TL4050B10QDBZR delivers 150μVRMS wideband noise (10Hz–10kHz), which is significantly lower than standard alternatives like LM4040B10IDBZR (300μVRMS). This 2× noise reduction directly improves SNR in precision ADC front-ends and low-level signal conditioning circuits using TL4050B10QDBZR as the reference source.
TL4050B10QDBZR 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):
- 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:
- SOT-23-3
TL4050B10QDBZR FAQ
1.How can I place an order for TL4050B10QDBZR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B10QDBZR 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 TL4050B10QDBZR reliable?
The price and inventory of TL4050B10QDBZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B10QDBZR is usually 5 days.
3.What payment methods are accepted for TL4050B10QDBZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050B10QDBZR transactions.
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4.How is shipping managed for TL4050B10QDBZR?
TL4050B10QDBZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B10QDBZR 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 TL4050B10QDBZR?
For technical support, including TL4050B10QDBZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B10QDBZR requirements.
6.How does Aetrix verify that TL4050B10QDBZR is sourced from the original manufacturer or authorized distributors?
All TL4050B10QDBZR 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 TL4050B10QDBZR meets industry standards.
7.What is the process for return or replacement of TL4050B10QDBZR?
All TL4050B10QDBZR units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B10QDBZR, 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 TL4050B10QDBZR part is unused and in its original packaging.
Return procedure for TL4050B10QDBZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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