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Texas Instruments TL4050C10IDBZT
- Part No.:
- TL4050C10IDBZT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050C10IDBZT.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:653
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Product details
Overview
TL4050C10IDBZT from Texas Instruments is a precision micropower shunt voltage reference delivering a fixed 10V output with ±0.5% initial tolerance (C grade), 50ppm/°C temperature coefficient, 150μVRMS wideband noise, 0.7Ω dynamic impedance at 1mA, and stable operation from 80μA to 15mA cathode current. It serves as a high-stability reference in 12-bit data-acquisition systems requiring accurate full-scale calibration.
For engineers reviewing the TL4050C10IDBZT datasheet, TL4050C10IDBZT pinout, TL4050C10IDBZT application, or TL4050C10IDBZT equivalent, key selection criteria include its 10V output accuracy over –40°C to 85°C, low-noise performance in battery-powered instrumentation, and compatibility with capacitive loads without external stabilization.
Technical Context
The TL4050C10IDBZT operates as a two-terminal shunt reference, sinking cathode current to maintain a precise 10V reverse breakdown voltage across its terminals. Its internal bandgap architecture ensures low thermal hysteresis (2.8mV) and long-term stability (120ppm after 1000h).
It functions within a cathode current range of 80μA (min) to 15mA (max), exhibits 0.7Ω dynamic impedance at 1mA/120Hz, and delivers 150μVRMS noise (10Hz–10kHz) - enabling use in high-resolution ADC/DAC biasing where supply rejection and low drift are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10V nominal; enables direct full-scale reference for 10V-range 12-bit ADCs (1mV LSB) |
| Initial Tolerance | ±0.5% max at 25°C; defines worst-case absolute error before temperature or aging effects |
| Temp Coefficient | 50ppm/°C max over –40°C to 85°C; contributes ≤±0.43% error across full industrial range |
| Noise (10Hz–10kHz) | 150μVRMS typical; limits resolution in precision measurement front-ends |
| Dynamic Impedance | 0.7Ω at 1mA/120Hz; ensures minimal output voltage shift under load transients |
| Cathode Current Range | 80μA to 15mA; supports ultra-low-power sensor nodes and higher-current analog circuitry |
| Thermal Hysteresis | 2.8mV over –40°C ↔ 125°C cycling; constrains repeatability error in thermally cycled systems |
Pinout & Package
SOT-23-3 package (DBZ) with 1.4mm × 2.9mm footprint and 1.1mm height; optimized for space-constrained PCB layouts in portable instrumentation and automotive control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground terminal | Connected to system ground; forms return path for cathode current and load current |
| Cathode (Pin 2) | Output voltage node | Provides regulated 10V output; sinks total current (IZ + IL) in shunt configuration |
| NC / Floating (Pin 3) | Unused terminal | Must be left unconnected or tied to Pin 2 per TI design guidance to avoid parasitic Schottky conduction |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with all capacitive loads up to ≥10µF; eliminates BOM cost and layout area for bypass caps |
| Micropower operation | 80μA minimum cathode current enables >10-year battery life in 10µA-average IoT sensors |
| Industrial temperature range | Specified from –40°C to +85°C; qualified for deployment in automotive cabin electronics and factory floor controllers |
| Low dynamic impedance | 0.7Ω at 1mA ensures <1mV output shift under 1mA load steps - critical for ratiometric ADC accuracy |
| Low wideband noise | 150μVRMS (10Hz–10kHz) supports 16-bit effective resolution in noise-sensitive audio and medical front-ends |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-accuracy voltage measurement in portable multimeters and handheld DMMs. IC Role / Device Role / Timing Role: Primary 10V reference for 12-bit SAR ADC, defining full-scale range and LSB size. Use Value: ±0.5% initial tolerance and 50ppm/°C TC ensure calibrated accuracy remains within Class II metrology limits across operating temperature. |
Use Scenario: Monitoring 12V rail integrity in telecom power shelves with fault logging. IC Role / Device Role / Timing Role: Shunt reference in comparator-based overvoltage/undervoltage detection circuit. Use Value: Stable 10V threshold enables reliable trip-point setting independent of supply ripple or temperature drift. |
| Process Control Transmitters | Battery-Powered Equipment |
Use Scenario: 4–20mA loop-powered field transmitter with local analog signal conditioning. IC Role / Device Role / Timing Role: Precision reference for DAC generating loop current setpoint. Use Value: Low 150μVRMS noise prevents current-loop jitter; micropower operation extends loop-powered device uptime. |
Use Scenario: Calibration reference in handheld gas analyzers powered by Li-ion cells. IC Role / Device Role / Timing Role: Stable 10V reference for sensor excitation and ADC reference in low-duty-cycle sampling. Use Value: 80μA min cathode current allows operation down to 2.7V supply while maintaining regulation accuracy. |
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% (A grade), 50ppm/°C, 3.3V–5.5V supply-dependent operation, 50μA quiescent | Requires external bias supply; not a true two-terminal shunt - needs series resistor and clean VDD | Select when system already provides regulated low-noise 3.3V/5V rail and board space permits three-terminal topology |
| LM4040C10IDBZR | 10V, ±0.5%, 100ppm/°C, 85μA min cathode current, SOT-23-3, same pinout | Higher tempco degrades accuracy by ~0.85% over –40°C to 85°C vs. TL4050C10IDBZT's ~0.43% | Acceptable for cost-sensitive industrial controls where ±1% total error budget suffices and tighter TC is non-critical |
Compared with REF3010AIDBZR and LM4040C10IDBZR, TL4050C10IDBZT offers true two-terminal simplicity and superior temperature stability, making it optimal for retrofitting into legacy shunt-reference designs or space-constrained battery systems where supply rails are unregulated.
Availability
TL4050C10IDBZT is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and battery-powered equipment requiring stable component supply with guaranteed long-term continuity.
Supply support for TL4050C10IDBZT 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, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs.
The TL4050 series was designed specifically for high-accuracy, low-power shunt voltage reference applications in industrial, automotive, and portable instrumentation - prioritizing stability, noise performance, and ease of integration.
FAQ
What is the operating temperature range for TL4050C10IDBZT?
The TL4050C10IDBZT is characterized for operation from –40°C to +85°C (industrial temperature range). Its electrical specifications - including 10V output voltage, ±0.5% initial tolerance, and 50ppm/°C temperature coefficient - are guaranteed across this full range, making it suitable for deployment in automotive cabin modules and factory automation hardware.
Does TL4050C10IDBZT require an external output capacitor?
No, TL4050C10IDBZT does not require an external output capacitor. It is internally compensated and stable with all capacitive loads, including 0μF. Adding a capacitor is optional and may be used for additional high-frequency noise filtering, but it is never necessary for stability - simplifying layout and reducing BOM count.
What is the minimum cathode current needed for TL4050C10IDBZT to regulate properly?
The TL4050C10IDBZT requires a minimum cathode current of 80μA (typical) and 103μA (maximum over temperature) to maintain regulation. Below this threshold, the output voltage deviates from 10V; design must ensure the series resistor and load conditions sustain IZ ≥ 103μA across all operating conditions.
How does TL4050C10IDBZT compare to TL4050B10IDBZT in accuracy?
TL4050C10IDBZT has ±0.5% initial tolerance and 50ppm/°C temperature coefficient, while TL4050B10IDBZT offers ±0.2% initial tolerance with the same 50ppm/°C TC. The B-grade part reduces room-temperature error by 60% - from ±50mV to ±20mV - at higher cost, making it preferable for 14-bit+ data acquisition where tighter absolute accuracy is mandatory.
Can TL4050C10IDBZT be used in a 3.3V system?
Yes, TL4050C10IDBZT can operate in a 3.3V system when configured as a shunt reference with appropriate series resistance. Since it regulates at 10V, the input supply must exceed 10V - so a 3.3V rail alone cannot power it directly. However, if the system includes a higher-voltage auxiliary rail (e.g., 12V or 15V), TL4050C10IDBZT can provide a stable 10V reference referenced to the 3.3V ground plane.
TL4050C10IDBZT 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:
- ±0.5%
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TL4050C10IDBZT FAQ
1.How can I place an order for TL4050C10IDBZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050C10IDBZT 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 TL4050C10IDBZT reliable?
The price and inventory of TL4050C10IDBZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050C10IDBZT is usually 5 days.
3.What payment methods are accepted for TL4050C10IDBZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050C10IDBZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050C10IDBZT?
TL4050C10IDBZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050C10IDBZT 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 TL4050C10IDBZT?
For technical support, including TL4050C10IDBZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050C10IDBZT requirements.
6.How does Aetrix verify that TL4050C10IDBZT is sourced from the original manufacturer or authorized distributors?
All TL4050C10IDBZT 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 TL4050C10IDBZT meets industry standards.
7.What is the process for return or replacement of TL4050C10IDBZT?
All TL4050C10IDBZT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050C10IDBZT, 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 TL4050C10IDBZT part is unused and in its original packaging.
Return procedure for TL4050C10IDBZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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