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Texas Instruments TL4050A25IDCKT
- Part No.:
- TL4050A25IDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TL4050A25IDCKT.pdf
- Description:
- IC VREF SHUNT 0.1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,992
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Product details
Overview
TL4050A25IDCKT from Texas Instruments is a precision 2.5V micropower shunt voltage reference in SC-70-3 package, featuring ±0.1% initial tolerance, 50ppm/°C max temperature coefficient, 41μVRMS typical noise, 60μA typical minimum cathode current, and operation across –40°C to 85°C. It serves as a stable reference in high-resolution ADC/DAC biasing, portable power-supply monitoring, and battery-powered instrumentation.
For engineers reviewing the TL4050A25IDCKT datasheet, TL4050A25IDCKT pinout, TL4050A25IDCKT application, or TL4050A25IDCKT equivalent, key selection criteria include shunt topology compatibility, low-noise performance at microamp bias currents, thermal hysteresis (0.7mV), long-term stability (120ppm/1000h), and SC-70 footprint constraints in space-constrained designs.
Technical Context
The TL4050A25IDCKT operates as a two-terminal shunt reference requiring no external output capacitor and remaining stable with all capacitive loads. Its internal bandgap core delivers fixed 2.5V reverse breakdown voltage with dynamic impedance of just 0.3Ω at 1mA, enabling precise regulation under varying load and supply conditions.
Designed for industrial-temperature applications, it maintains tight parametric control across –40°C to 85°C ambient, with specified performance for cathode current ranging from 60μA (typ) to 15mA, and guaranteed thermal hysteresis ≤0.7mV after cycling between –40°C and 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V nominal; tightly regulated reverse breakdown voltage used as precision reference point for analog signal chains. |
| Initial Tolerance | ±0.1% at 25°C; enables 12-bit+ accuracy without trimming in data-acquisition systems. |
| Temp Coefficient | ≤50ppm/°C over full range; ensures <±0.125mV drift across –40°C to 85°C ambient. |
| Noise (10Hz–10kHz) | 41μVRMS typical; low enough to avoid degrading ENOB in 16-bit SAR ADCs. |
| Min Cathode Current | 60μA typical; supports ultra-low-power operation in battery-backed sensors and wearables. |
| Dynamic Impedance | 0.3Ω at 1mA; minimizes output voltage shift under transient load changes. |
| Thermal Hysteresis | 0.7mV; limits residual error after thermal cycling, critical for calibration-critical test equipment. |
Pinout & Package
TL4050A25IDCKT is housed in a 3-pin SC-70 (DCK) package - a 2.0mm × 2.1mm surface-mount outline with 0.65mm pitch. Pin 1 is Cathode, Pin 2 is Anode, and Pin 3 is NC (no internal connection; must be left floating or tied to Pin 2 per TI design guidance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Reference output node | Connected to load and bias resistor; sinks current to maintain 2.5V at this terminal relative to anode. |
| Anode (Pin 2) | Ground/reference return | Common reference point; must be connected to system ground or low-impedance return path. |
| NC (Pin 3) | No internal connection | TI specifies this pin must remain unconnected or tied to Pin 2 to avoid parasitic Schottky conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-output-capacitor stability | Eliminates need for external bypass cap, reducing BOM count and PCB area in compact designs. |
| Wide operating current range | Functional from 60μA to 15mA cathode current, supporting both ultra-low-power and higher-accuracy configurations. |
| Low dynamic impedance | 0.3Ω at 1mA enables fast transient response and minimal load-induced voltage droop. |
| Extended temperature characterization | Specified over –40°C to 85°C, ensuring consistent 2.5V reference behavior in industrial environments. |
| Low thermal hysteresis | 0.7mV max after –40°C ↔ 125°C cycling preserves calibration integrity in field-deployed instruments. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution 16-bit SAR ADC front-end requiring stable reference for accurate voltage digitization. IC Role / Device Role / Timing Role: Provides 2.5V reference input to ADC's VREF pin, defining LSB step size and full-scale range. Use Value: ±0.1% tolerance and 41μVRMS noise ensure <±0.5LSB error contribution in 16-bit conversion at 2.5V full scale. |
Use Scenario: Real-time monitoring of 3.3V/5V rail health in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Serves as precision threshold reference for comparator-based overvoltage/undervoltage detection circuitry. Use Value: 50ppm/°C tempco guarantees <±10mV drift over –40°C to 85°C, enabling reliable fault flagging across operating range. |
| Portable Instrumentation | Battery-Powered Sensors |
Use Scenario: Handheld multimeter with auto-ranging analog front-end and low-power microcontroller. IC Role / Device Role / Timing Role: Supplies stable 2.5V reference to internal ADC and analog signal conditioning stages. Use Value: 60μA min cathode current allows operation from coin-cell batteries for >1 year while maintaining 12-bit measurement accuracy. |
Use Scenario: Wireless environmental sensor node measuring temperature/humidity with ultra-low duty-cycle operation. IC Role / Device Role / Timing Role: Provides reference voltage during brief ADC sampling bursts, powered only during active measurement phase. Use Value: SC-70 package and micropower operation minimize board space and quiescent current, extending battery life in intermittent-use deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3025AIDBZR | 2.5V series reference; requires input voltage ≥2.55V; 50ppm/°C tempco; 42μVRMS noise; 50μA quiescent current. | Requires dedicated supply rail; unsuitable for shunt topologies or reverse-biased configurations. | Select when a 3-pin series reference with tighter layout isolation is preferred over 2-pin shunt simplicity. |
| ADR3425ARJZ-R7 | 2.5V series reference; 10ppm/°C max tempco; 12μVRMS noise; 120μA quiescent current; SOIC-8 package. | Higher accuracy and lower noise, but larger footprint and higher supply overhead; not pin-compatible. | Choose for metrology-grade applications where 10ppm/°C stability outweighs size and power penalties. |
Compared with REF3025AIDBZR and ADR3425ARJZ-R7, TL4050A25IDCKT offers the smallest footprint (SC-70), lowest minimum operating current (60μA), and true 2-terminal shunt flexibility-making it optimal for space- and power-constrained designs where series reference headroom or PCB real estate is limited.
Availability
TL4050A25IDCKT is available at Aetrix Electronics and suitable for data-acquisition systems, portable instrumentation, and battery-powered sensors requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for TL4050A25IDCKT 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, with leadership in precision analog ICs and broad portfolio coverage across industrial, automotive, and personal electronics markets.
TL4050A25IDCKT belongs to TI's precision shunt voltage reference product line, engineered specifically for high-accuracy, low-power, and space-constrained applications including portable test equipment, energy metering, and sensor signal conditioning.
FAQ
What is the operating temperature range for TL4050A25IDCKT?
The TL4050A25IDCKT is characterized for industrial-temperature operation from –40°C to +85°C ambient. Its electrical specifications-including initial tolerance, temperature coefficient, and dynamic impedance-are fully guaranteed across this range. The device remains functional beyond these limits but without parametric assurance.
Does TL4050A25IDCKT require an output capacitor for stability?
No, TL4050A25IDCKT does not require an output capacitor for stability. It is explicitly designed to remain stable with all capacitive loads, including zero capacitance. Adding a capacitor may reduce noise but is never necessary for loop stability in shunt regulator configurations.
What is the minimum cathode current needed for TL4050A25IDCKT to regulate properly?
The TL4050A25IDCKT requires a minimum cathode current of 60μA (typical) and 65μA (max over temperature) to maintain regulation within specification. Below this, output voltage deviates from 2.5V; design must ensure RS resistor sets sufficient current even at worst-case supply and load conditions.
How does TL4050A25IDCKT differ from TL4050A25QDCKT?
TL4050A25IDCKT is rated for –40°C to +85°C operation, while TL4050A25QDCKT extends to –40°C to +125°C. Both share identical electrical specs (tolerance, noise, impedance), but the 'Q' grade undergoes additional screening for extended-temperature reliability-critical for under-hood automotive or high-ambient industrial use.
Can TL4050A25IDCKT be used in series-reference topologies?
No, TL4050A25IDCKT is a two-terminal shunt reference and cannot function as a series reference. It must be connected in parallel with the load, sinking current to maintain 2.5V across its cathode-anode terminals. Attempting series configuration will prevent proper regulation and may damage the device.
TL4050A25IDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 41µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TL4050A25IDCKT FAQ
1.How can I place an order for TL4050A25IDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050A25IDCKT 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 TL4050A25IDCKT reliable?
The price and inventory of TL4050A25IDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050A25IDCKT is usually 5 days.
3.What payment methods are accepted for TL4050A25IDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050A25IDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050A25IDCKT?
TL4050A25IDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050A25IDCKT 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 TL4050A25IDCKT?
For technical support, including TL4050A25IDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050A25IDCKT requirements.
6.How does Aetrix verify that TL4050A25IDCKT is sourced from the original manufacturer or authorized distributors?
All TL4050A25IDCKT 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 TL4050A25IDCKT meets industry standards.
7.What is the process for return or replacement of TL4050A25IDCKT?
All TL4050A25IDCKT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050A25IDCKT, 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 TL4050A25IDCKT part is unused and in its original packaging.
Return procedure for TL4050A25IDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050A25IDCKT Tags
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TL431AIDBZR
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TL431BQDBZR
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
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