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Texas Instruments TL4050B41IDBZT
- Part No.:
- TL4050B41IDBZT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050B41IDBZT.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,685
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Product details
Overview
TL4050B41IDBZT from Texas Instruments is a precision micropower shunt voltage reference with 4.096V nominal output, ±0.2% initial tolerance (B grade), 50ppm/°C max temperature coefficient, 93μVRMS wideband noise, and stable operation from 68μA to 15mA cathode current. It serves as a high-accuracy reference in 12-bit data-acquisition systems requiring LSB = 1mV under 5V supply.
For engineers reviewing the TL4050B41IDBZT datasheet, TL4050B41IDBZT pinout, TL4050B41IDBZT application, or TL4050B41IDBZT equivalent, key selection criteria include industrial-grade temperature range (–40°C to 85°C), SOT-23-3 package compatibility, low-noise performance for ADC/DAC biasing, and no-output-capacitor stability across capacitive loads.
Technical Context
The TL4050B41IDBZT operates as a two-terminal shunt reference, sinking cathode current to maintain a precise 4.096V reverse breakdown voltage across its terminals. Its internal bandgap-derived core delivers low dynamic impedance (0.5Ω at 1mA) and thermal hysteresis of 1.148mV over –40°C to 125°C cycling.
Designed for direct integration into voltage-divider or series-pass regulator feedback paths, it requires no external compensation and remains stable with all capacitive loads - eliminating need for output bypass capacitors while supporting load current up to 15mA when properly biased via external series resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal at 100μA cathode current; enables exact 1mV LSB in 12-bit systems with 5V full-scale. |
| Initial Tolerance | ±0.2% max (B grade) at 25°C; ensures ≤±8.2mV absolute error before temperature drift or aging. |
| Temp Coefficient | ±50ppm/°C max over –40°C to 85°C; contributes ≤±2.05mV drift across full operating range. |
| Noise (10Hz–10kHz) | 93μVRMS typical; limits RMS voltage error in precision measurement front-ends without filtering. |
| Cathode Current Range | 68μA min to 15mA max; supports ultra-low-power sensor nodes and higher-current reference buffering. |
| Dynamic Impedance | 0.5Ω at 1mA, 120Hz; maintains output regulation against fast load transients in ADC sampling circuits. |
| Long-Term Stability | 120ppm after 1000 hours; corresponds to ~0.5mV drift over 1 year under continuous bias. |
Pinout & Package
SOT-23-3 package (DBZ) with 1.4mm × 2.9mm footprint, 1.1mm height, and gull-wing leads. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Connected to system GND; forms return path for cathode current and defines 0V reference point. |
| Cathode (Pin 2) | Output voltage terminal | Provides regulated 4.096V output; sinks all bias and load current; connects to ADC VREF or DAC REF input. |
| NC / Floating (Pin 3) | Unused terminal | Internally unconnected; must remain floating or tied to Pin 2 per TI recommendation to avoid parasitic Schottky conduction. |
Key Features
| Feature | Design Value |
|---|---|
| No-output-capacitor stability | Operates without external bypass capacitor across cathode/anode - simplifies layout and reduces BOM count in space-constrained designs. |
| Wide cathode current range | Functional from 68μA to 15mA - supports both battery-powered microcontrollers and high-current analog front-ends. |
| Low thermal hysteresis | 1.148mV max after –40°C ↔ 125°C cycling - preserves calibration integrity in thermally cycled industrial equipment. |
| EMI-robust pinout | Pin 3 isolation prevents unintended conduction from EMI coupling; recommended tie to Pin 2 in noisy environments. |
| Extended temp support | Qualified for –40°C to 85°C ambient - meets industrial control and automotive under-hood requirements where extended range is mandatory. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: 12-bit SAR ADC (e.g., ADS7842) measuring 0–5V sensor signals in portable test equipment. IC Role / Device Role / Timing Role: Provides 4.096V reference voltage to ADC VREF pin, enabling exact 1mV LSB resolution. Use Value: Eliminates need for trimming or calibration due to ±0.2% initial accuracy and <2mV total drift over temperature. | Use Scenario: Monitoring 12V rail in industrial PLC power module using resistive divider + comparator. IC Role / Device Role / Timing Role: Supplies stable reference to comparator input for accurate undervoltage lockout detection. Use Value: Maintains trip-point accuracy within ±0.5% over –40°C to 85°C, preventing false shutdowns. |
| Instrumentation & Test Equipment | Battery-Powered Equipment |
Use Scenario: Digital multimeter reference source for DC voltage measurement ranges. IC Role / Device Role / Timing Role: Serves as primary voltage standard for auto-ranging amplifier gain calibration. Use Value: 93μVRMS noise ensures sub-LSB noise floor in 5½-digit measurements without averaging. | Use Scenario: Reference for fuel gauge IC in lithium-ion battery pack management system. IC Role / Device Role / Timing Role: Biases ADC measuring cell voltage with minimal quiescent current draw. Use Value: 68μA minimum cathode current enables operation down to 2.7V supply while maintaining 4.096V 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 |
|---|---|---|---|
| TL4050A41IDBZT | ±0.1% initial tolerance (A grade) vs. ±0.2% (B grade); otherwise identical specs and pinout. | Required where tighter initial accuracy is needed for factory calibration or zero-drift systems. | Select TL4050A41IDBZT if system-level calibration budget allows only ±4.1mV total reference error at 25°C. |
| REF3040AIDBZR | 3.0V output, 50ppm/°C, 25μVRMS noise, SOT-23-3, but uses series topology (not shunt) and requires 50μA supply current. | Suitable for low-noise, low-dropout applications where load connects to VOUT instead of cathode. | Choose REF3040AIDBZR only when series topology is preferred and 3.0V output suffices; not drop-in compatible. |
Compared with TL4050A41IDBZT, the TL4050B41IDBZT trades 0.1% initial accuracy for lower cost while retaining identical temperature behavior, noise, and package; versus REF3040AIDBZR, it offers shunt topology flexibility and 4.096V output but with higher noise and different biasing architecture.
Availability
TL4050B41IDBZT is available at Aetrix Electronics and suitable for data-acquisition systems, industrial power-supply monitors, and portable instrumentation requiring stable component supply with guaranteed long-term sourcing.
Supply support for TL4050B41IDBZT 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TL4050 product line delivers precision shunt voltage references optimized for low-power, high-accuracy applications including 12-bit data converters, portable instrumentation, and industrial monitoring systems.
FAQ
What is the output voltage tolerance of TL4050B41IDBZT at 25°C?
The TL4050B41IDBZT has a maximum initial output voltage tolerance of ±0.2% at 25°C, corresponding to ±8.2mV around the nominal 4.096V output. This specification is verified per TI's Electrical Characteristics table for TL4050B41I devices under 100μA cathode current test condition.
Does TL4050B41IDBZT require an external output capacitor?
No, TL4050B41IDBZT does not require an external output capacitor for stability. Its design is inherently stable with all capacitive loads, including direct connection to ADC reference inputs or long PCB traces. Adding a capacitor is optional and does not affect regulation performance.
What is the minimum cathode current required for TL4050B41IDBZT to regulate properly?
The TL4050B41IDBZT requires a minimum cathode current of 68μA at 25°C (73μA over full –40°C to 85°C range) to maintain regulation within specifications. Below this threshold, output voltage may deviate beyond the ±0.2% tolerance band.
Can TL4050B41IDBZT be used in automotive under-hood applications?
The TL4050B41IDBZT is rated for –40°C to 85°C operation (industrial grade), making it suitable for cabin and some under-dash automotive applications. For under-hood use requiring –40°C to 125°C, the TL4050B41QDBZT variant must be selected instead.
How does TL4050B41IDBZT compare to TL4050C41IDBZT in terms of accuracy and cost?
The TL4050B41IDBZT offers ±0.2% initial tolerance versus ±0.5% for TL4050C41IDBZT, providing tighter accuracy at moderate cost premium. Both share identical temperature coefficient (50ppm/°C), noise (93μVRMS), and package - making TL4050B41IDBZT optimal for applications needing better than C-grade but not requiring A-grade precision.
TL4050B41IDBZT 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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 73 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TL4050B41IDBZT FAQ
1.How can I place an order for TL4050B41IDBZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B41IDBZT 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 TL4050B41IDBZT reliable?
The price and inventory of TL4050B41IDBZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B41IDBZT is usually 5 days.
3.What payment methods are accepted for TL4050B41IDBZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050B41IDBZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050B41IDBZT?
TL4050B41IDBZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B41IDBZT 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 TL4050B41IDBZT?
For technical support, including TL4050B41IDBZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B41IDBZT requirements.
6.How does Aetrix verify that TL4050B41IDBZT is sourced from the original manufacturer or authorized distributors?
All TL4050B41IDBZT 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 TL4050B41IDBZT meets industry standards.
7.What is the process for return or replacement of TL4050B41IDBZT?
All TL4050B41IDBZT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B41IDBZT, 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 TL4050B41IDBZT part is unused and in its original packaging.
Return procedure for TL4050B41IDBZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050B41IDBZT Tags
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TL431AIDBZR
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TL431BQDBZR
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AZ431LBNTR-G1
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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AZ431LANTR-G1
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