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Texas Instruments TL4050A50QDBZR
- Part No.:
- TL4050A50QDBZR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050A50QDBZR.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,807
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Product details
Overview
TL4050A50QDBZR from Texas Instruments is a precision micropower shunt voltage reference delivering a fixed 5.0V output with ±0.1% initial tolerance (max), 50ppm/°C temperature coefficient (max), 93μVRMS wideband noise, and stable operation from –40°C to 125°C in SOT-23-3 package. It serves as a low-drift, low-noise reference for high-resolution ADCs and battery-powered instrumentation.
For engineers reviewing the TL4050A50QDBZR datasheet, TL4050A50QDBZR pinout, TL4050A50QDBZR application, or TL4050A50QDBZR equivalent, key selection criteria include its extended-temperature-grade A-grade accuracy, cathode current range (56–90μA min to 15mA max), dynamic impedance (0.5Ω), thermal hysteresis (1.4mV), and compatibility with all capacitive loads without external stabilization.
Technical Context
The TL4050A50QDBZR operates as a two-terminal shunt reference requiring only an external series resistor to regulate cathode current between 56μA (min) and 15mA (max). Its bandgap-based architecture achieves tight initial tolerance and low drift across –40°C to 125°C ambient, with dynamic impedance of 0.5Ω at 1mA enabling fast load transient response.
It exhibits low wideband noise (93μVRMS, 10Hz–10kHz) and negligible thermal hysteresis (1.4mV), making it suitable for precision measurement systems where long-term stability and signal integrity are critical. No output capacitor is required, and stability is guaranteed across all capacitive loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V nominal; enables direct interface with 5V-supply ADCs/DACs without scaling. |
| Initial Tolerance | ±0.1% max at 25°C; supports 12-bit+ system accuracy without calibration. |
| Temp Coefficient | ±50ppm/°C max over –40°C to 125°C; contributes ≤0.6mV drift across full range. |
| Min Cathode Current | 56μA typical / 90μA max over temp; ensures reliable start-up in ultra-low-power designs. |
| Dynamic Impedance | 0.5Ω at 1mA; maintains output regulation under fast load transients. |
| Wideband Noise | 93μVRMS (10Hz–10kHz); limits noise contribution in high-resolution data acquisition. |
| Thermal Hysteresis | 1.4mV; reflects minimal VZ shift after thermal cycling, critical for repeatable metrology. |
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 guidance due to parasitic Schottky diode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode) | Reference output node | Connected to load and series resistor; sinks total current (IZ + IL); voltage referenced to anode. |
| Pin 2 (Anode) | Ground/reference return | Common return path for cathode current and load current; defines 0V reference point. |
| Pin 3 (NC) | No internal connection | Must remain unconnected or tied to Pin 2; floating or misconnected Pin 3 risks instability due to parasitic diode. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates need for output bypass capacitor-reduces BOM count and PCB area in space-constrained designs. |
| Extended temperature range | –40°C to 125°C operation enables use in automotive engine compartments and industrial control cabinets. |
| Low micropower operation | 90μA maximum minimum cathode current allows integration into sub-100μA sleep-mode systems. |
| Low thermal hysteresis | 1.4mV hysteresis ensures repeatable voltage output after thermal cycling-critical for calibration-critical test equipment. |
| Low dynamic impedance | 0.5Ω impedance minimizes output voltage sag during load steps, preserving ADC reference accuracy in dynamic systems. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution 12-bit+ ADC front-end in portable multimeters and sensor nodes. IC Role / Device Role / Timing Role: Provides stable 5.0V reference for ADC conversion, directly setting LSB size and full-scale range. Use Value: ±0.1% tolerance and 93μVRMS noise enable <1-LSB error without calibration, extending battery life via micropower operation. | Use Scenario: Precision monitoring of 5V rail voltage in telecom power shelves and server PSUs. IC Role / Device Role / Timing Role: Shunt reference feeding comparator or ADC input to detect over/under-voltage conditions. Use Value: 50ppm/°C drift ensures accurate threshold detection across chassis temperature gradients without derating. |
| Automotive Electronics | Battery-Powered Equipment |
Use Scenario: Reference for engine control unit (ECU) analog sensor conditioning circuits. IC Role / Device Role / Timing Role: Supplies stable 5.0V bias to pressure, temperature, and position sensor signal chains. Use Value: –40°C to 125°C qualification and 1.4mV thermal hysteresis ensure consistent sensor accuracy across cold starts and hot soak cycles. | Use Scenario: Voltage reference in handheld medical devices (e.g., glucose meters, pulse oximeters). IC Role / Device Role / Timing Role: Enables precise analog front-end measurements while minimizing quiescent current draw. Use Value: 90μA max minimum cathode current allows operation from coin cells or Li-ion batteries with >5-year shelf life in standby 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 | 5.0V, ±0.2% initial tolerance, 50ppm/°C, SOT-23-3, but higher 100μVRMS noise and 100μA min cathode current. | Less suitable for ultra-low-power or sub-12-bit noise-sensitive systems. | Select TL4050A50QDBZR when tighter initial accuracy and lower noise are required at same package and temp grade. |
| ADR3450ARJZ-R7 | 5.0V, ±0.1% initial tolerance, 30ppm/°C, SC70-5, requires output capacitor, 120μA min operating current. | Higher precision but larger footprint, higher power, and added capacitor requirement increase design complexity. | Choose TL4050A50QDBZR for simplified layout, lower quiescent current, and capacitor-free operation in SOT-23-3 constrained designs. |
Compared with REF3050AIDBZR and ADR3450ARJZ-R7, TL4050A50QDBZR delivers superior noise performance (93μVRMS vs ≥100μVRMS) and lower minimum operating current (90μA vs ≥100μA), while maintaining identical A-grade tolerance and extended temperature rating in the smallest 3-pin package.
Availability
TL4050A50QDBZR is available at Aetrix Electronics and suitable for data-acquisition systems, automotive electronics, and battery-powered equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL4050A50QDBZR 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 belongs to TI's precision shunt voltage reference product line, designed specifically for high-accuracy, low-power, extended-temperature applications in instrumentation, automotive, and portable electronics.
FAQ
What is the operating temperature range of the TL4050A50QDBZR?
The TL4050A50QDBZR is characterized for operation from –40°C to 125°C ambient temperature, qualifying it for under-hood automotive, industrial control, and harsh-environment applications where standard industrial-grade references (–40°C to 85°C) would fail.
Does the TL4050A50QDBZR require an external output capacitor?
No, the TL4050A50QDBZR does not require an external output capacitor for stability. It is explicitly designed to remain stable with all capacitive loads, eliminating the need for a bypass capacitor and simplifying layout in space-constrained designs.
What is the minimum cathode current required for proper operation of TL4050A50QDBZR?
The TL4050A50QDBZR requires a minimum cathode current of 56μA (typical) and up to 90μA (maximum over temperature) to maintain regulation. This low current enables use in micropower systems such as battery-backed sensors and portable instrumentation.
How does the TL4050A50QDBZR compare to the TL4050A50IDBZR?
The TL4050A50QDBZR differs from TL4050A50IDBZR solely in temperature rating: Q-grade is specified for –40°C to 125°C, while I-grade is limited to –40°C to 85°C. All electrical specifications-including tolerance, noise, and impedance-are identical between the two variants.
Can TL4050A50QDBZR be used as a replacement for TL4050B50QDBZR in an existing design?
Yes, TL4050A50QDBZR can replace TL4050B50QDBZR in most designs, as both share identical pinout, package, temperature range, and basic electrical behavior. However, the A-grade part offers tighter ±0.1% initial tolerance versus B-grade's ±0.2%, improving system accuracy without layout changes.
TL4050A50QDBZR 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:
- 90 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TL4050A50QDBZR FAQ
1.How can I place an order for TL4050A50QDBZR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050A50QDBZR 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 TL4050A50QDBZR reliable?
The price and inventory of TL4050A50QDBZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050A50QDBZR is usually 5 days.
3.What payment methods are accepted for TL4050A50QDBZR?
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4.How is shipping managed for TL4050A50QDBZR?
TL4050A50QDBZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050A50QDBZR 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 TL4050A50QDBZR?
For technical support, including TL4050A50QDBZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050A50QDBZR requirements.
6.How does Aetrix verify that TL4050A50QDBZR is sourced from the original manufacturer or authorized distributors?
All TL4050A50QDBZR 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 TL4050A50QDBZR meets industry standards.
7.What is the process for return or replacement of TL4050A50QDBZR?
All TL4050A50QDBZR units undergo pre-shipment inspection (PSI). If there is an issue with TL4050A50QDBZR, 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 TL4050A50QDBZR part is unused and in its original packaging.
Return procedure for TL4050A50QDBZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050A50QDBZR Tags
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