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Texas Instruments TL4050A41IDCKR
- Part No.:
- TL4050A41IDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TL4050A41IDCKR.pdf
- Description:
- IC VREF SHUNT 0.1% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,219
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Product details
Overview
TL4050A41IDCKR from Texas Instruments is a precision micropower shunt voltage reference delivering a stable 4.096V output with ±0.1% initial tolerance and ±50ppm/°C temperature coefficient over –40°C to 85°C. It operates from 68μA minimum cathode current up to 15mA, features 93μVRMS wideband noise, and maintains stability with any capacitive load-enabling use in high-resolution 12-bit data-acquisition systems.
For engineers reviewing the TL4050A41IDCKR datasheet, TL4050A41IDCKR pinout, TL4050A41IDCKR application, or TL4050A41IDCKR equivalent, key selection criteria include its A-grade accuracy, SC-70 package footprint, low-noise performance for ADC/DAC biasing, and compatibility with battery-powered and industrial sensor signal chains requiring tight voltage reference stability.
Technical Context
The TL4050A41IDCKR functions as a two-terminal shunt reference, sinking cathode current to regulate voltage across its anode–cathode terminals. Its internal bandgap core achieves 4.096V output via curvature-compensated design, with dynamic impedance of 0.5Ω at 1mA and thermal hysteresis of 1.148mV over –40°C to 125°C cycling.
It requires no external output capacitor and remains stable under all capacitive loads-a direct result of its low-output-impedance architecture and optimized internal compensation. The device's 1000-hour long-term stability is specified at 120ppm, supporting applications demanding consistent reference integrity over extended deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal; enables exact 1mV LSB in 12-bit ADCs powered from 5V rails. |
| Initial Tolerance | ±0.1% max at 25°C; ensures ≤±4.1mV absolute error without calibration. |
| Temp Coefficient | ±50ppm/°C max over –40°C to 85°C; contributes ≤±2.05mV drift across full industrial range. |
| Min Cathode Current | 68μA typical; supports ultra-low-power operation in battery-backed sensor nodes. |
| Output Noise | 93μVRMS (10Hz–10kHz); avoids quantization noise floor degradation in precision measurement front-ends. |
| Dynamic Impedance | 0.5Ω at 1mA; minimizes load-induced voltage shift during transient current demand. |
| Operating Range | –40°C to 85°C ambient; qualified for industrial control and automotive cabin electronics. |
Pinout & Package
TL4050A41IDCKR 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 guidance to avoid parasitic Schottky conduction).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Connected to system ground or low-impedance return path; defines voltage reference point for load. |
| Cathode (Pin 2) | Regulated output node | Sinks current to maintain 4.096V between Cathode and Anode; connects to ADC VREF or DAC reference input. |
| NC (Pin 3) | No internal connection | Must remain unconnected or tied to Pin 2; floating Pin 3 prevents unintended conduction via SOT-23 parasitic diode. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-output-capacitor stability | Eliminates BOM cost and board space for external bypass caps while maintaining phase margin >45° across 1pF–10μF loads. |
| Micropower operation | 68μA typical minimum cathode current enables >10-year battery life in coin-cell–powered IoT sensors. |
| Low thermal hysteresis | 1.148mV max after –40°C/125°C cycling ensures repeatable voltage accuracy after thermal stress in automotive ECUs. |
| High ESD robustness | ±2000V HBM rating protects against handling damage during manual assembly and field service. |
| Wide current range | Operates stably from 68μA to 15mA cathode current-supports both ultra-low-power sleep modes and high-speed sampling bursts. |
Applications
| Data-Acquisition Systems | Power-Supply Monitoring |
|---|---|
Use Scenario: 12-bit SAR ADC (e.g., ADS7842) in portable test equipment acquiring analog sensor signals. IC Role / Device Role / Timing Role: Provides precise 4.096V reference for ADC full-scale range, enabling 1mV LSB resolution. Use Value: Matches 5V system rail to maximize dynamic range without scaling resistors, reducing gain error and thermal drift in measurement chain. | Use Scenario: Real-time monitoring of 3.3V/5V/12V rails in industrial PLC power modules. IC Role / Device Role / Timing Role: Shunt reference for comparator-based overvoltage/undervoltage detection circuitry. Use Value: Tight ±0.1% tolerance ensures trip-point accuracy within ±4.1mV, preventing nuisance shutdowns or missed fault events. |
| Precision Instrumentation | Battery-Powered Equipment |
Use Scenario: Digital multimeter front-end requiring stable reference for autoranging and offset calibration. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope or sigma-delta ADC subsystems. Use Value: 93μVRMS noise and <0.5Ω dynamic impedance prevent reference-induced noise coupling into sensitive integrator stages. | Use Scenario: Wireless environmental sensor node powered by CR2032 coin cell with 10-year target lifetime. IC Role / Device Role / Timing Role: Reference for low-power microcontroller ADC measuring thermistor or humidity sensor outputs. Use Value: 68μA min cathode current allows operation at <100μA total system sleep current, extending battery life beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3041AIDBZR | 4.096V, ±0.2% initial tolerance, 50ppm/°C, SOT-23-3, 50μA min current | Lower accuracy grade; higher min current requirement limits ultra-low-power use | Select when cost sensitivity outweighs need for A-grade tolerance and micropower operation. |
| ADR3440ARJZ-R7 | 4.096V, ±0.1% initial tolerance, 30ppm/°C, SOT-23-5, 120μA min current | Lower tempco but larger 5-pin package and higher min current; not drop-in compatible | Choose for tighter thermal drift in extended temperature designs where PCB layout permits SOT-23-5 footprint. |
Compared with REF3041AIDBZR and ADR3440ARJZ-R7, TL4050A41IDCKR delivers A-grade accuracy in the smallest SC-70 footprint with the lowest operating current-making it optimal for space-constrained, battery-critical applications where 50ppm/°C drift is acceptable.
Availability
TL4050A41IDCKR is available at Aetrix Electronics and suitable for data-acquisition systems, industrial power-supply monitors, and portable instrumentation requiring stable component supply with guaranteed long-term continuity.
Supply support for TL4050A41IDCKR 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 headquartered in Dallas, Texas, designing and manufacturing analog ICs, embedded processors, and digital signal processors for industrial, automotive, and consumer markets.
The TL4050 series belongs to TI's precision voltage reference product line, engineered specifically for high-accuracy, low-power shunt regulation in space- and energy-constrained systems such as portable test gear and battery-operated sensors.
FAQ
What is the output voltage tolerance of TL4050A41IDCKR at 25°C?
The TL4050A41IDCKR has a maximum initial output voltage tolerance of ±0.1% at 25°C, corresponding to ±4.1mV around its nominal 4.096V output. This A-grade specification is verified per TI's electrical characteristics table for TL4050A41I devices and applies across the full SC-70 packaged orderable part family.
Does TL4050A41IDCKR require an external output capacitor?
No, TL4050A41IDCKR does not require an external output capacitor for stability. Its internal design ensures unconditional stability with all capacitive loads from 1pF to 10μF, eliminating the need for bypass components and simplifying layout-confirmed in TI's datasheet Section 8.1 and Figure 8-1 test circuit.
What is the minimum cathode current needed for TL4050A41IDCKR to regulate properly?
The TL4050A41IDCKR requires a minimum cathode current of 68μA (typical) at 25°C to maintain regulation, with a maximum of 73μA across the full –40°C to 85°C industrial temperature range. This value is specified in Table 5.6 of the TI datasheet for TL4050A41I devices.
Can TL4050A41IDCKR be used in automotive under-hood applications?
TL4050A41IDCKR is rated for –40°C to 85°C operation and is not qualified for under-hood automotive use. For extended temperature environments up to 125°C, TI offers the Q-grade variant TL4050A41QDCKR-identical functionality with enhanced thermal qualification per AEC-Q100 stress testing requirements.
How does the noise performance of TL4050A41IDCKR compare to other 4.096V references?
TL4050A41IDCKR delivers 93μVRMS wideband noise (10Hz–10kHz), which is higher than some series references but optimized for shunt topology trade-offs. Its noise is fully characterized and stable across operating current, making it suitable for 12-bit systems where 1mV LSB resolution dominates noise budget allocation-verified in TI's Figure 6-4 and Table 5.6.
TL4050A41IDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- 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:
- 73 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TL4050A41IDCKR FAQ
1.How can I place an order for TL4050A41IDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050A41IDCKR 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 TL4050A41IDCKR reliable?
The price and inventory of TL4050A41IDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050A41IDCKR is usually 5 days.
3.What payment methods are accepted for TL4050A41IDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050A41IDCKR transactions.
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4.How is shipping managed for TL4050A41IDCKR?
TL4050A41IDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050A41IDCKR 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 TL4050A41IDCKR?
For technical support, including TL4050A41IDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050A41IDCKR requirements.
6.How does Aetrix verify that TL4050A41IDCKR is sourced from the original manufacturer or authorized distributors?
All TL4050A41IDCKR 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 TL4050A41IDCKR meets industry standards.
7.What is the process for return or replacement of TL4050A41IDCKR?
All TL4050A41IDCKR units undergo pre-shipment inspection (PSI). If there is an issue with TL4050A41IDCKR, 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 TL4050A41IDCKR part is unused and in its original packaging.
Return procedure for TL4050A41IDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050A41IDCKR Tags
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TL431AIDBZR
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TL431BQDBZR
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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LM4040EIM3-2.5/NOPB
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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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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
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