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Texas Instruments TL4050B10IDBZT
- Part No.:
- TL4050B10IDBZT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050B10IDBZT.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:444
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Product details
Overview
TL4050B10IDBZT from Texas Instruments is a precision micropower shunt voltage reference delivering a fixed 10V output with ±0.2% initial tolerance (max), 50ppm/°C temperature coefficient (max), 150μVRMS wideband noise, 0.7Ω dynamic impedance at 1mA, and stable operation from –40°C to 85°C. It serves as a high-accuracy voltage基准 in ADC/DAC reference paths, power-supply monitors, and portable instrumentation.
For engineers reviewing the TL4050B10IDBZT datasheet, TL4050B10IDBZT pinout, TL4050B10IDBZT application, or TL4050B10IDBZT equivalent, key selection criteria include cathode current range (100μA–15mA), thermal hysteresis (2.8mV), long-term stability (120ppm/1000h), and SOT-23-3 package compatibility with space-constrained PCB layouts.
Technical Context
The TL4050B10IDBZT operates as a two-terminal shunt reference requiring no external capacitor for stability and supporting all capacitive loads. Its internal bandgap architecture delivers low dynamic impedance (0.7Ω) and low noise (150μVRMS) across 10Hz–10kHz, enabling high-resolution data acquisition.
It functions within a cathode current range of 100μA to 15mA, with minimum operating current of 100μA (typical) and maximum reverse breakdown voltage drift of ±23mV over full industrial temperature range (–40°C to 85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10V nominal; enables direct 10-bit/12-bit ADC full-scale reference without scaling resistors |
| Initial Tolerance | ±0.2% max at 25°C; supports 12-bit system accuracy without calibration |
| Temp Coefficient | ±50ppm/°C max; contributes ≤±0.5mV drift over –40°C to 85°C ambient |
| Noise (10Hz–10kHz) | 150μVRMS; limits effective resolution to ~16.5 ENOB in precision ADCs |
| Dynamic Impedance | 0.7Ω at 1mA; maintains <1mV output shift under 1mA load transients |
| Cathode Current Range | 100μA to 15mA; allows flexible biasing in low-power and high-current applications |
| Thermal Hysteresis | 2.8mV; defines repeatability error after thermal cycling between –40°C and 125°C |
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 recommendation due to parasitic Schottky diode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Current-sink terminal; connects to supply rail via series resistor and to load reference input |
| Pin 2 | Anode | Ground reference node; forms return path for cathode current and load current |
| Pin 3 | No Connect | Internally unconnected; floating or tied to Pin 2 to avoid parasitic conduction |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Operates stably with any capacitive load; eliminates BOM cost and layout area for output capacitor |
| Micropower operation | 100μA typical minimum cathode current enables battery life extension in portable systems |
| Extended temp support | Rated for –40°C to 85°C ambient; qualified for industrial and automotive cabin applications |
| Low thermal hysteresis | 2.8mV hysteresis ensures repeatable 10V reference after thermal cycling |
| ESD robustness | ±2000V HBM rating protects against handling damage during assembly and test |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution 12-bit SAR ADC (e.g., ADS7842) in portable test equipment. IC Role / Device Role / Timing Role: Provides precise 10V reference for analog input scaling and LSB definition. Use Value: Enables 1mV LSB resolution without gain calibration; 0.2% tolerance avoids post-factory trimming. | Use Scenario: Monitoring 24V industrial power rail for undervoltage lockout and brownout detection. IC Role / Device Role / Timing Role: Supplies stable 10V reference to comparator input for accurate threshold comparison. Use Value: ±0.2% tolerance ensures trip point accuracy within ±48mV; low drift prevents false triggers over temperature. |
| Instrumentation & Test Equipment | Battery-Powered Equipment |
Use Scenario: Portable multimeter front-end requiring stable reference for DC voltage measurement. IC Role / Device Role / Timing Role: Serves as primary reference for autoranging ADC and digital calibration engine. Use Value: 150μVRMS noise supports >16-bit effective resolution; 100μA min current extends battery runtime. | Use Scenario: Wireless sensor node with Li-ion battery and integrated ADC for environmental sensing. IC Role / Device Role / Timing Role: Supplies regulated 10V reference to analog front-end while minimizing quiescent current draw. Use Value: Micropower operation (100μA min) reduces average current consumption; SOT-23-3 footprint saves board space. |
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 higher 220μVRMS noise and 1.2mA min operating current | Less suitable for ultra-low-power designs; requires higher bias current | Choose REF3010AIDBZR only if lower thermal hysteresis (1.5mV) is prioritized over current efficiency |
| LM4040B10IDBZR | 10V, ±0.2% tolerance, 100ppm/°C tempco, 35μVRMS noise, 60μA min current | Higher tempco increases drift by ~2× over industrial range; lower noise benefits low-frequency precision | Choose LM4040B10IDBZR when ultra-low noise is critical and temperature variation is tightly controlled |
Compared with REF3010AIDBZR and LM4040B10IDBZR, TL4050B10IDBZT offers superior thermal hysteresis (2.8mV vs. 1.5mV/3.0mV) and lower minimum operating current (100μA vs. 1.2mA/60μA), making it optimal for battery-powered instrumentation where repeatability and micropower matter most.
Availability
TL4050B10IDBZT is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and portable instrumentation requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for TL4050B10IDBZT 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 specializing in analog and embedded processing technologies, with leadership in precision analog ICs and industrial-grade components.
The TL4050 series was designed for high-accuracy, low-power shunt reference applications in data converters, power monitoring, and portable test equipment-emphasizing stability, noise performance, and ease of use without external compensation.
FAQ
What is the maximum cathode current rating for TL4050B10IDBZT?
The absolute maximum cathode current for TL4050B10IDBZT is 20mA, but the recommended operating range is 100μA to 15mA per the datasheet's Recommended Operating Conditions. Exceeding 15mA risks exceeding thermal limits and degrading long-term stability; TL4050B10IDBZT must be biased within this window to maintain ±0.2% tolerance and 50ppm/°C tempco performance.
Does TL4050B10IDBZT require an output capacitor for stability?
No, TL4050B10IDBZT does not require an output capacitor for stability. Its design is inherently stable with all capacitive loads, including direct connection to ADC reference inputs or large bulk capacitance. Adding a capacitor may reduce high-frequency noise but is never mandatory-TL4050B10IDBZT remains functional and stable even with zero output capacitance.
What is the thermal hysteresis specification for TL4050B10IDBZT?
The thermal hysteresis of TL4050B10IDBZT is 2.8mV, defined as the difference in 10V output measured at 25°C after cycling to –40°C versus after cycling to 125°C. This value is confirmed in Section 5.11 of the datasheet and directly impacts repeatability in systems undergoing repeated thermal cycles, such as outdoor industrial sensors or automotive cabin modules.
Can TL4050B10IDBZT be used in automotive under-hood applications?
TL4050B10IDBZT is rated for –40°C to 85°C operation (industrial grade), making it suitable for automotive cabin or infotainment applications but not under-hood environments requiring 125°C operation. For extended temperature use, the Q-grade variant TL4050B10QDBZT (–40°C to 125°C) is specified and validated-TL4050B10IDBZT itself is not qualified beyond 85°C ambient.
How does the noise performance of TL4050B10IDBZT compare to other 10V shunt references?
TL4050B10IDBZT specifies 150μVRMS wideband noise (10Hz–10kHz), which is higher than LM4040B10IDBZR (35μVRMS) but lower than REF3010AIDBZR (220μVRMS). This places TL4050B10IDBZT in the mid-noise tier-adequate for 12-bit to 14-bit data acquisition where thermal and quantization noise dominate, but not optimal for ultra-low-noise 16-bit+ systems where sub-50μVRMS is required.
TL4050B10IDBZT 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:
- 103 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TL4050B10IDBZT FAQ
1.How can I place an order for TL4050B10IDBZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B10IDBZT 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 TL4050B10IDBZT reliable?
The price and inventory of TL4050B10IDBZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B10IDBZT is usually 5 days.
3.What payment methods are accepted for TL4050B10IDBZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050B10IDBZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050B10IDBZT?
TL4050B10IDBZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B10IDBZT 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 TL4050B10IDBZT?
For technical support, including TL4050B10IDBZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B10IDBZT requirements.
6.How does Aetrix verify that TL4050B10IDBZT is sourced from the original manufacturer or authorized distributors?
All TL4050B10IDBZT 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 TL4050B10IDBZT meets industry standards.
7.What is the process for return or replacement of TL4050B10IDBZT?
All TL4050B10IDBZT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B10IDBZT, 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 TL4050B10IDBZT part is unused and in its original packaging.
Return procedure for TL4050B10IDBZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050B10IDBZT Tags
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