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Texas Instruments TL4050B41IDBZR
- Part No.:
- TL4050B41IDBZR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050B41IDBZR.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,835
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Product details
Overview
TL4050B41IDBZR from Texas Instruments is a precision micropower shunt voltage reference with a fixed 4.096V output, ±0.2% initial tolerance (B grade), 50ppm/°C 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 TL4050B41IDBZR datasheet, TL4050B41IDBZR pinout, TL4050B41IDBZR application, or TL4050B41IDBZR equivalent, key selection criteria include industrial temperature range (–40°C to 85°C), SOT-23-3 package compatibility, low-noise performance for ADC/DAC biasing, and no-output-capacitor stability in space-constrained portable designs.
Technical Context
The TL4050B41IDBZR operates as a two-terminal shunt reference, regulating voltage by sinking variable cathode current while maintaining a precise reverse breakdown voltage across its terminals. Its internal bandgap-derived core delivers stable output despite variations in supply voltage and load current within specified operating ranges.
It features low dynamic impedance (0.5Ω at 1mA), thermal hysteresis of 1.148mV over –40°C to 125°C cycling, and long-term stability of 120ppm after 1000 hours - enabling reliable performance in instrumentation and automotive electronics where drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal; enables exact 1mV LSB in 12-bit systems with 5V full-scale range. |
| Initial Tolerance | ±0.2% max at 25°C; ensures reference accuracy without post-manufacturing calibration. |
| Temp Coefficient | ±50ppm/°C max over –40°C to 85°C; limits drift to ≤2.05mV across full industrial range. |
| Noise (10Hz–10kHz) | 93μVRMS typical; preserves signal integrity in high-resolution analog-to-digital conversion. |
| Min Cathode Current | 68μA typical; supports ultra-low-power battery-operated applications with minimal quiescent draw. |
| Dynamic Impedance | 0.5Ω at 1mA; maintains regulation stability under fast load transients in power-supply monitors. |
| Operating Range | –40°C to 85°C ambient; qualified for industrial and automotive control environments. |
Pinout & Package
SOT-23-3 package (DBZ) with standard pinout: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC (no connection; parasitic Schottky diode between Pins 2 and 3 requires Pin 3 to be left floating or tied to Pin 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Current sink node | Accepts total current (IZ + IL); voltage regulation occurs across cathode-to-anode terminals. |
| Anode (Pin 2) | Reference ground reference | Serves as return path; must connect to system ground or low-impedance reference plane. |
| Pin 3 | No-connect terminal | Internally connected via parasitic Schottky diode to Pin 2; must float or tie to Pin 2 to avoid unintended conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates need for external output capacitor - reduces BOM count and PCB area in compact designs. |
| Low 93μVRMS noise | Enables high-SNR measurements in precision audio and test equipment without added filtering. |
| Wide 68μA–15mA operating current | Supports both micropower sensor nodes and higher-current power-supply monitor circuits from single design. |
| Two-terminal architecture | Simplifies layout and eliminates separate reference input; ideal for retrofitting into existing shunt-regulator footprints. |
| Thermal hysteresis ≤1.148mV | Ensures repeatable voltage after thermal cycling - critical for process controls and energy management calibrations. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution ADC reference in portable multimeters and sensor data loggers. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for 12-bit SAR ADCs, enabling 1mV LSB resolution with 5V supply. Use Value: Eliminates need for trimming or calibration due to ±0.2% tolerance and low drift over temperature. | Use Scenario: Precision feedback reference in isolated DC-DC converters and battery charge controllers. IC Role / Device Role / Timing Role: Shunt-based voltage sense node that regulates output by adjusting cathode current in response to error amplifier output. Use Value: Stable 0.5Ω dynamic impedance ensures tight regulation during load transients without external compensation. |
| Instrumentation & Test Equipment | Automotive Electronics |
Use Scenario: Calibration reference in benchtop DMMs and signal generators requiring traceable accuracy. IC Role / Device Role / Timing Role: Primary voltage standard for self-test and auto-calibration routines across operating temperature range. Use Value: 120ppm long-term stability and 1.148mV thermal hysteresis support annual recalibration intervals. | Use Scenario: Reference for engine control unit (ECU) analog front-ends monitoring rail voltages and sensor signals. IC Role / Device Role / Timing Role: Shunt reference in harsh environment circuits where ESD robustness (±2kV HBM) and extended temp range are mandatory. Use Value: Qualified to –40°C to 85°C with 50ppm/°C drift ensures compliance with AEC-Q100 Grade 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050A41IDBZR | ±0.1% initial tolerance, same 4.096V output and SOT-23-3 package | Higher accuracy required in metrology-grade instruments or calibration standards | Select when tighter initial error budget justifies cost premium over TL4050B41IDBZR |
| REF3040AIDBZR | 4.096V output, ±0.2% tolerance, but series topology with 50μA quiescent current and 3.6V–16V supply range | Used where input voltage exceeds reference voltage and shunt configuration is impractical | Choose for higher-voltage systems needing series reference architecture instead of shunt |
Compared with TL4050A41IDBZR, TL4050B41IDBZR trades 0.1% initial accuracy for lower cost while retaining identical noise, tempco, and package; versus REF3040AIDBZR, it offers simpler two-terminal biasing but requires external current-limiting resistor and cannot operate above cathode voltage.
Availability
TL4050B41IDBZR is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and automotive electronics requiring stable component supply with guaranteed long-term continuity.
Supply support for TL4050B41IDBZR 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 series belongs to TI's precision voltage reference product line, engineered specifically for low-drift, low-noise, micropower shunt references in space-constrained and battery-sensitive applications.
FAQ
What is the output voltage tolerance of TL4050B41IDBZR at 25°C?
The TL4050B41IDBZR 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 the TL4050x41I Electrical Characteristics table in the official datasheet, and applies across the full industrial temperature range when combined with its ±50ppm/°C temperature coefficient.
Does TL4050B41IDBZR require an external output capacitor?
No, TL4050B41IDBZR does not require an external output capacitor for stability. Its two-terminal shunt architecture is inherently stable with all capacitive loads, including direct connection to ADC reference inputs or large bulk capacitance. This eliminates capacitor-related drift, aging, and board space - a key advantage confirmed in Section 8.1 of the TL4050 datasheet.
What is the minimum cathode current needed for TL4050B41IDBZR to regulate properly?
The TL4050B41IDBZR requires a minimum cathode current of 68μA (typical) at 25°C to maintain regulation, rising to 73μA across the full –40°C to 85°C industrial range. This value is specified in Table 5.6 (TL4050x41I Electrical Characteristics) and determines the upper bound of the series current-limiting resistor in shunt regulator designs.
How does TL4050B41IDBZR compare to TL4050A41IDBZR in terms of accuracy and cost?
TL4050B41IDBZR offers ±0.2% initial tolerance versus ±0.1% for TL4050A41IDBZR, with identical 4.096V output, noise (93μVRMS), temperature coefficient (±50ppm/°C), and SOT-23-3 packaging. The B-grade part provides a cost-optimized alternative where the tighter A-grade tolerance is unnecessary - validated by TI's ordering matrix and parametric tables.
Can TL4050B41IDBZR be used in automotive applications requiring extended temperature range?
TL4050B41IDBZR is rated for –40°C to 85°C (industrial grade), not the extended –40°C to 125°C range required for under-hood automotive use. For such applications, TI specifies TL4050B41QDBZR (Q-grade), which shares the same 4.096V output and ±0.2% tolerance but is characterized across the full automotive temperature range per datasheet Section 5.7.
TL4050B41IDBZR 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
TL4050B41IDBZR FAQ
1.How can I place an order for TL4050B41IDBZR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B41IDBZR 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 TL4050B41IDBZR reliable?
The price and inventory of TL4050B41IDBZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B41IDBZR is usually 5 days.
3.What payment methods are accepted for TL4050B41IDBZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050B41IDBZR transactions.
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4.How is shipping managed for TL4050B41IDBZR?
TL4050B41IDBZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B41IDBZR 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 TL4050B41IDBZR?
For technical support, including TL4050B41IDBZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B41IDBZR requirements.
6.How does Aetrix verify that TL4050B41IDBZR is sourced from the original manufacturer or authorized distributors?
All TL4050B41IDBZR 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 TL4050B41IDBZR meets industry standards.
7.What is the process for return or replacement of TL4050B41IDBZR?
All TL4050B41IDBZR units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B41IDBZR, 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 TL4050B41IDBZR part is unused and in its original packaging.
Return procedure for TL4050B41IDBZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050B41IDBZR 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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