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Texas Instruments TL4050A10QDCKT
- Part No.:
- TL4050A10QDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TL4050A10QDCKT.pdf
- Description:
- IC VREF SHUNT 0.1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,642
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Product details
Overview
TL4050A10QDCKT from Texas Instruments is a precision micropower shunt voltage reference delivering a stable 10V output with ±0.1% initial tolerance and ±50ppm/°C temperature coefficient across –40°C to 125°C. It operates from 60μA to 15mA cathode current, exhibits 150μVRMS wideband noise, and maintains stability with any capacitive load-enabling use in high-accuracy data acquisition and automotive power-supply monitoring.
For engineers reviewing the TL4050A10QDCKT datasheet, TL4050A10QDCKT pinout, TL4050A10QDCKT application, or TL4050A10QDCKT equivalent, key selection criteria include extended-temperature operation, low dynamic impedance (0.7Ω), thermal hysteresis of 2.8mV, and SC-70 package compatibility for space-constrained industrial sensing and battery-powered instrumentation.
Technical Context
The TL4050A10QDCKT functions as a two-terminal shunt reference requiring no external capacitor for stability. Its internal bandgap architecture delivers fixed 10V reverse breakdown voltage with tight initial accuracy and low drift over temperature and operating current.
Designed for extended-temperature environments, it supports cathode currents from 100μA (min) to 15mA (max), with dynamic impedance under 0.7Ω at 1mA and thermal hysteresis limited to 2.8mV after cycling between –40°C and 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10V nominal reverse breakdown voltage at IZ = 100μA; enables direct interface with 10-bit+ ADCs requiring precise full-scale reference. |
| Initial Tolerance | ±0.1% at 25°C; ensures ≤10mV absolute error without calibration in precision measurement front-ends. |
| Temp Coefficient | ±50ppm/°C over –40°C to 125°C; contributes ≤500μV drift across full range, critical for automotive and industrial control loops. |
| Wideband Noise | 150μVRMS (10Hz–10kHz); limits added noise floor in high-resolution analog signal chains. |
| Dynamic Impedance | 0.7Ω at IZ = 1mA; minimizes output voltage shift under varying load current in shunt-regulator configurations. |
| Min Cathode Current | 100μA typical (110μA max over temp); allows ultra-low-power operation in battery-backed sensor nodes. |
| Thermal Hysteresis | 2.8mV after –40°C ↔ 125°C cycling; guarantees repeatable reference performance after thermal stress. |
Pinout & Package
TL4050A10QDCKT is housed in a 3-pin SC-70 (DCK) package, measuring 2.0mm × 2.1mm × 0.9mm. Pin 1 is Anode, Pin 2 is Cathode, 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 |
|---|---|---|
| Anode (Pin 1) | Reference ground terminal | Connected to system ground; forms return path for cathode current and defines reference potential. |
| Cathode (Pin 2) | Output voltage terminal | Delivers regulated 10V; requires external series resistor (RS) to set total current for load + reference bias. |
| NC (Pin 3) | No internal connection | Must remain unconnected or tied to Pin 2; parasitic Schottky diode between Pins 2–3 mandates this constraint. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates need for output bypass capacitor-reducing BOM count and PCB area in compact designs. |
| Extended temperature range | Rated for –40°C to 125°C ambient; qualified for under-hood automotive and industrial motor-control applications. |
| Low micropower operation | 100μA minimum cathode current enables >10-year battery life in wireless sensor transmitters. |
| Low thermal hysteresis | 2.8mV hysteresis ensures consistent 10V output after repeated thermal cycling-critical for field-replaceable modules. |
| High ESD robustness | ±2000V HBM rating protects against handling damage during manual assembly and rework. |
Applications
| Automotive Power-Supply Monitor | Industrial Data-Acquisition Front-End |
|---|---|
Use Scenario: Monitoring 12V battery rail in engine control units with diagnostic logging. IC Role / Device Role / Timing Role: Shunt reference providing stable 10V reference for ADC conversion of sensed voltage. Use Value: ±0.1% tolerance and ±50ppm/°C drift ensure <10mV total error over vehicle lifetime, meeting ISO 16750-2 requirements. |
Use Scenario: High-precision analog input stage in programmable logic controller (PLC) analog I/O module. IC Role / Device Role / Timing Role: Reference source for 16-bit SAR ADC sampling process variables (pressure, temperature). Use Value: 150μVRMS noise and 0.7Ω dynamic impedance preserve ENOB >15.2 bits across operating temperature. |
| Battery-Powered Portable Instrument | Energy Management System Sensor Node |
Use Scenario: Handheld multimeter with auto-ranging and true-RMS capability. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope and sigma-delta converter subsystems. Use Value: 100μA min cathode current enables microamp-level sleep-mode operation while retaining reference integrity. |
Use Scenario: Smart meter current transformer (CT) interface with isolated ADC and RF telemetry. IC Role / Device Role / Timing Role: Stable 10V reference for gain calibration of current-sense amplifier chain. Use Value: 2.8mV thermal hysteresis prevents calibration drift after outdoor temperature cycling from –25°C to 60°C. |
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, SOT-23-3, 50μA min IZ | Lower min current enables lower-power sleep modes but lacks extended-temp qualification (only –40°C to 125°C for Q-grade variants) | Preferred for cost-sensitive industrial sensors where AEC-Q200 not required and supply headroom permits lower IZ. |
| ADR3410ARJZ-R7 | 10V, ±0.1% initial tolerance, ±25ppm/°C, SOT-23-5, 120μA min IZ, 12ppm/V line regulation | Superior tempco and line regulation, but larger footprint and higher quiescent current limit battery life | Selected when sub-25ppm/°C drift is mandatory and PCB area allows 5-pin package. |
Compared with REF3010AIDBZR and ADR3410ARJZ-R7, TL4050A10QDCKT offers the only combination of A-grade accuracy, Q-grade extended temperature rating, SC-70 footprint, and guaranteed stability with unlimited capacitive loading-making it uniquely suited for automotive and harsh-environment embedded systems.
Availability
TL4050A10QDCKT is available at Aetrix Electronics and suitable for automotive power-supply monitors, industrial PLC analog inputs, and battery-powered portable instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL4050A10QDCKT 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 automotive-qualified components.
The TL4050 series was designed specifically for high-accuracy, low-power shunt reference applications in automotive, industrial, and portable equipment-emphasizing extended temperature operation, minimal external components, and robust parametric stability.
FAQ
What is the maximum cathode current rating for TL4050A10QDCKT?
The absolute maximum cathode current for TL4050A10QDCKT is 15mA, as specified in the Absolute Maximum Ratings table. Operating continuously above this level risks permanent damage due to junction overheating. For reliable long-term operation, design cathode current within the recommended 100μA to 15mA range, with thermal derating applied above 85°C ambient.
Does TL4050A10QDCKT require an output capacitor for stability?
No, TL4050A10QDCKT does not require an output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including direct connection to large bulk capacitors or ADC input capacitance. Adding a capacitor may reduce high-frequency noise but is never necessary for loop stability.
What is the purpose of Pin 3 on TL4050A10QDCKT?
Pin 3 of TL4050A10QDCKT is a no-connect (NC) terminal with no internal bond wire. Due to a parasitic Schottky diode between Pins 2 (Cathode) and 3, TI explicitly requires Pin 3 to be left floating or tied directly to Pin 2. Leaving it unconnected or improperly biased risks forward-conducting the parasitic diode and disrupting reference regulation.
How does the thermal hysteresis specification impact system calibration?
TL4050A10QDCKT specifies 2.8mV thermal hysteresis-the voltage difference measured at 25°C after cycling to –40°C versus after cycling to 125°C. This parameter directly limits repeatability of end-of-line calibration in field-deployed units exposed to wide ambient swings, making it essential for applications requiring recalibration-free operation over product lifetime.
Can TL4050A10QDCKT replace TL4050A10IDCKT in existing designs?
Yes, TL4050A10QDCKT is a direct drop-in replacement for TL4050A10IDCKT in most cases, sharing identical SC-70 package, pinout, electrical characteristics at 25°C, and functional behavior. The key upgrade is extended temperature qualification (–40°C to 125°C vs. –40°C to 85°C), enabling use in higher-ambient environments without layout or schematic changes.
TL4050A10QDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 150µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 110 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TL4050A10QDCKT FAQ
1.How can I place an order for TL4050A10QDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050A10QDCKT 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 TL4050A10QDCKT reliable?
The price and inventory of TL4050A10QDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050A10QDCKT is usually 5 days.
3.What payment methods are accepted for TL4050A10QDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050A10QDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050A10QDCKT?
TL4050A10QDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050A10QDCKT 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 TL4050A10QDCKT?
For technical support, including TL4050A10QDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050A10QDCKT requirements.
6.How does Aetrix verify that TL4050A10QDCKT is sourced from the original manufacturer or authorized distributors?
All TL4050A10QDCKT 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 TL4050A10QDCKT meets industry standards.
7.What is the process for return or replacement of TL4050A10QDCKT?
All TL4050A10QDCKT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050A10QDCKT, 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 TL4050A10QDCKT part is unused and in its original packaging.
Return procedure for TL4050A10QDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050A10QDCKT 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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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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