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Texas Instruments TL4050A50IDBZT
- Part No.:
- TL4050A50IDBZT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050A50IDBZT.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:506
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Product details
Overview
TL4050A50IDBZT from Texas Instruments is a precision micropower shunt voltage reference with 5.0 V nominal output, ±0.1% initial tolerance (A grade), 50 ppm/°C max temperature coefficient, 93 μVRMS wideband noise (10 Hz–10 kHz), and stable operation from 56 μA to 15 mA cathode current. It serves as a high-accuracy voltage reference in 12-bit data-acquisition systems requiring low-drift, low-noise, and minimal supply current.
For engineers reviewing the TL4050A50IDBZT datasheet, TL4050A50IDBZT pinout, TL4050A50IDBZT application, or TL4050A50IDBZT equivalent, this page delivers verified electrical characteristics, SOT-23-3 terminal mapping, industrial-grade (–40°C to 85°C) performance data, and validated alternative options for precision analog design.
Technical Context
The TL4050A50IDBZT operates as a two-terminal shunt reference, sinking cathode current to maintain a stable 5.0 V reverse breakdown voltage across its terminals. Its internal bandgap core achieves ±0.1% accuracy at 25°C and maintains ≤50 ppm/°C drift over –40°C to 85°C, enabling high-resolution ADC/DAC biasing without external trimming.
It exhibits 0.5 Ω dynamic impedance at 1 mA, supports all capacitive loads without an output capacitor, and delivers 93 μVRMS noise-critical for low-error measurements in battery-powered instrumentation and process control sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal; enables direct use with 5-V-supply 12-bit ADCs (e.g., 1 mV LSB resolution) |
| Initial Tolerance | ±0.1% max at 25°C; eliminates need for system-level calibration in high-accuracy measurement paths |
| Temp Coefficient | ≤50 ppm/°C over –40°C to 85°C; ensures <±0.4 mV drift across full industrial range |
| Noise (10 Hz–10 kHz) | 93 μVRMS; limits added uncertainty to <0.02% of full-scale in precision digitization |
| Cathode Current Range | 56 μA (min) to 15 mA (max); supports ultra-low-power sensor nodes and high-current reference buffering |
| Dynamic Impedance | 0.5 Ω at 1 mA; minimizes load-induced voltage shift during transient current demands |
| Long-Term Stability | 120 ppm after 1000 h; guarantees reference integrity over multi-year embedded deployments |
Pinout & Package
SOT-23-3 package (DBZ): compact 2.92 mm × 1.3 mm footprint with gull-wing leads, optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Current sink node | Connected to regulated output node; sinks total current (load + reference bias) to ground via series resistor |
| Anode (Pin 2) | Reference ground reference | Must be tied to system ground; forms return path for cathode current and defines 0 V reference point |
| NC / Floating (Pin 3) | No internal connection | Left unconnected per TI specification; parasitic Schottky diode between Pins 2–3 requires Pin 3 isolation |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates mandatory output capacitor-reduces BOM count and layout sensitivity in noisy environments |
| Low 56 μA minimum cathode current | Enables operation from microamp-level supplies (e.g., energy-harvesting sensors or coin-cell devices) |
| Industrial temperature range | Specified performance from –40°C to +85°C ensures reliability in factory automation and outdoor metering |
| Low thermal hysteresis | 1.4 mV max ΔVZ after –40°C ↔ 125°C cycling-preserves calibration stability after thermal stress |
| ESD robustness | ±2000 V HBM rating-survives standard handling without special ESD precautions in production lines |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution analog input conditioning for industrial PLC modules with 12-bit SAR ADCs. IC Role / Device Role / Timing Role: Precision 5.0 V reference for ADC full-scale voltage setting and offset calibration. Use Value: Enables ±0.1% absolute measurement accuracy without post-fabrication trimming, reducing test time and cost. |
Use Scenario: Monitoring 5 V rail integrity in telecom power shelves with fault logging. IC Role / Device Role / Timing Role: Stable reference for comparator-based overvoltage/undervoltage detection circuits. Use Value: Maintains trip-point accuracy within ±1 mV over temperature, preventing false shutdowns. |
| Instrumentation & Test Equipment | Battery-Powered Equipment |
Use Scenario: Portable multimeter front-end requiring stable reference under varying battery voltage. IC Role / Device Role / Timing Role: Low-drift 5.0 V reference for autoranging DMM ADC reference and DAC feedback. Use Value: Delivers <±0.5 mV error contribution over 0–100% battery discharge, preserving 4½-digit resolution. |
Use Scenario: Wearable health monitor measuring biopotentials with ultra-low standby power. IC Role / Device Role / Timing Role: Micropower shunt reference supplying bias to low-noise instrumentation amplifiers. Use Value: Draws only 56 μA minimum current-extends coin-cell life beyond 5 years in sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3050AIDBZR | 5.0 V, ±0.2% initial tolerance, 50 ppm/°C, 41 μVRMS noise, 50 μA min IZ, SOT-23-3 | Lower noise but looser initial accuracy; requires tighter system gain calibration | Preferred when noise dominates error budget over absolute accuracy |
| ADR3450ARJZ-R7 | 5.0 V, ±0.1% initial tolerance, 30 ppm/°C, 10 μVRMS noise, 100 μA min IZ, SOT-23-5 | Superior tempco and noise, but higher minimum current and 5-pin package | Chosen for metrology-grade instruments where long-term drift must be <10 ppm/°C |
Compared with TL4050A50IDBZT, REF3050AIDBZR trades 0.1% accuracy for lower noise in identical SOT-23-3 form factor, while ADR3450ARJZ-R7 delivers superior stability at the cost of higher quiescent current and larger footprint-enabling selection based on dominant error source: initial tolerance, thermal drift, or broadband noise.
Availability
TL4050A50IDBZT is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and portable instrumentation requiring stable component supply with guaranteed industrial-temperature performance.
Supply support for TL4050A50IDBZT 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 delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog ICs and power management.
The TL4050 series was designed specifically for cost-sensitive, high-accuracy shunt reference applications in industrial, automotive, and portable equipment-emphasizing micropower operation, no-output-capacitor stability, and extended temperature reliability.
FAQ
What is the operating temperature range for TL4050A50IDBZT?
The TL4050A50IDBZT is characterized for industrial operation from –40°C to +85°C. This range is explicitly defined in the "Recommended Operating Conditions" section of the datasheet and confirmed in Table 9-1 ordering information for the "I" suffix variant. Its performance parameters-including initial tolerance, temperature coefficient, and noise-are guaranteed across this full span.
Does TL4050A50IDBZT require an output capacitor?
No, TL4050A50IDBZT does not require an output capacitor for stability. As stated in Section 8.1 and the Description section, it is designed to remain stable with all capacitive loads-including zero capacitance-and adding one is optional for noise filtering only. This simplifies layout and reduces component count in space-constrained designs.
What is the minimum cathode current needed for TL4050A50IDBZT to regulate properly?
The TL4050A50IDBZT requires a minimum cathode current of 56 μA at 25°C (80 μA over full –40°C to +85°C range) to maintain regulation within specifications. This value is specified in Section 5.8 (TL4050x50I Electrical Characteristics) and determines the maximum value of the series current-limiting resistor in shunt regulator configurations.
How does TL4050A50IDBZT compare to TL4050A50QDBZT?
TL4050A50IDBZT is rated for –40°C to +85°C operation, while TL4050A50QDBZT extends to +125°C. Both share identical electrical specs (5.0 V, ±0.1%, 50 ppm/°C, 93 μVRMS), but the "Q" version undergoes additional screening for automotive/extended-temp use. The "I" variant is optimized for cost-sensitive industrial applications where +85°C suffices.
Can TL4050A50IDBZT be used with a 3.3 V supply?
Yes-TL4050A50IDBZT can operate from a 3.3 V supply when configured as a shunt reference with appropriate current limiting. Since it regulates at 5.0 V, the supply must exceed 5.0 V to forward-bias the device. A 3.3 V rail cannot directly power TL4050A50IDBZT; it requires ≥5.5 V (accounting for series resistor drop) to sustain minimum cathode current and regulation.
TL4050A50IDBZT 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TL4050A50IDBZT FAQ
1.How can I place an order for TL4050A50IDBZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050A50IDBZT 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 TL4050A50IDBZT reliable?
The price and inventory of TL4050A50IDBZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050A50IDBZT is usually 5 days.
3.What payment methods are accepted for TL4050A50IDBZT?
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4.How is shipping managed for TL4050A50IDBZT?
TL4050A50IDBZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050A50IDBZT 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 TL4050A50IDBZT?
For technical support, including TL4050A50IDBZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050A50IDBZT requirements.
6.How does Aetrix verify that TL4050A50IDBZT is sourced from the original manufacturer or authorized distributors?
All TL4050A50IDBZT 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 TL4050A50IDBZT meets industry standards.
7.What is the process for return or replacement of TL4050A50IDBZT?
All TL4050A50IDBZT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050A50IDBZT, 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 TL4050A50IDBZT part is unused and in its original packaging.
Return procedure for TL4050A50IDBZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050A50IDBZT Tags
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TL431AIDBZR
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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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