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Texas Instruments TL4050C50QDCKT
- Part No.:
- TL4050C50QDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TL4050C50QDCKT.pdf
- Description:
- IC VREF SHUNT 0.5% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,121
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Product details
Overview
TL4050C50QDCKT from Texas Instruments is a precision micropower shunt voltage reference delivering a fixed 5.0V output with ±0.5% initial tolerance (max), 50ppm/°C temperature coefficient (max), 93μVRMS wideband noise, and stable operation from –40°C to 125°C. It functions as a two-terminal reference in analog signal chains, ADC/DAC biasing, and power-supply monitoring circuits requiring high accuracy under thermal stress.
For engineers reviewing the TL4050C50QDCKT datasheet, TL4050C50QDCKT pinout, TL4050C50QDCKT application, or TL4050C50QDCKT equivalent, key selection criteria include its extended-temperature-grade C-tolerance performance, SC-70 package footprint, cathode-anode terminal configuration, and compatibility with capacitive loads without external stabilization.
Technical Context
The TL4050C50QDCKT operates as a two-terminal shunt reference, sinking current between cathode and anode to maintain a precise 5.0V reverse breakdown voltage. Its internal bandgap core achieves low dynamic impedance (0.5Ω at 1mA) and low thermal hysteresis (1.4mV over –40°C to 125°C cycling).
It requires no output capacitor and remains stable across all capacitive loads. Minimum operating cathode current is 56μA (typical) at 25°C, rising to 90μA across the full –40°C to 125°C range, enabling use in ultra-low-power systems such as battery-powered instrumentation and automotive sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V nominal; enables direct interface with 5V ADCs and microcontrollers requiring stable reference rails. |
| Initial Tolerance | ±0.5% max at 25°C; defines worst-case absolute error before calibration in production test setups. |
| Temp Coefficient | 50ppm/°C max over –40°C to 125°C; ensures ≤0.6% total drift across full automotive temperature range. |
| Noise (10Hz–10kHz) | 93μVRMS typical; supports 12-bit resolution in data-acquisition systems without additional filtering. |
| Dynamic Impedance | 0.5Ω at 1mA, 120Hz; maintains voltage stability under fast load transients in precision analog front-ends. |
| Operating Current Range | 90μA to 15mA; allows design flexibility from ultra-low-power sensor nodes to higher-current reference buffers. |
| Thermal Hysteresis | 1.4mV over –40°C ↔ 125°C cycle; limits repeatability error in systems undergoing repeated thermal cycling. |
Pinout & Package
TL4050C50QDCKT is housed in a 3-pin SC-70 (DCK) package, measuring 2.0mm × 2.1mm × 0.9mm, optimized for space-constrained PCB layouts in portable and automotive electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode | Current sink node | Connected to supply rail via series resistor; sets reference current and determines output regulation point. |
| Anode | Reference ground node | Common return path for load and reference current; must be tied to system analog ground for accuracy. |
| NC (Pin 3) | No-connect terminal | Internally unused; must remain unconnected per TI SOT-23/SC-70 pinout specification to avoid parasitic conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates need for output bypass capacitor-reducing BOM count and board area in compact designs. |
| Extended temperature grade | Rated for –40°C to 125°C ambient; qualified for under-hood automotive and industrial control applications. |
| Low micropower operation | 90μA minimum cathode current enables >10-year battery life in always-on sensor nodes. |
| Low wideband noise | 93μVRMS supports 12-bit effective resolution in ADCs without post-processing or external filtering. |
| Three-grade accuracy options | C-grade (±0.5%) provides cost-optimized performance for non-critical measurement paths. |
Applications
| Data-Acquisition Systems | Automotive Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution ADCs in portable multimeters and handheld test equipment require stable, low-noise references for accurate DC voltage measurement. IC Role / Device Role / Timing Role: TL4050C50QDCKT serves as the primary voltage reference for SAR ADCs, defining LSB size and full-scale range. Use Value: 93μVRMS noise and 50ppm/°C drift ensure ≤0.025% measurement uncertainty over temperature in 12-bit systems. | Use Scenario: Real-time monitoring of 12V battery and alternator output in engine control units demands reliable voltage referencing under thermal stress. IC Role / Device Role / Timing Role: TL4050C50QDCKT supplies reference voltage to comparator-based fault-detection circuits and ADC inputs. Use Value: –40°C to 125°C operation and 1.4mV thermal hysteresis enable repeatable threshold detection across vehicle lifecycle. |
| Industrial Process Controllers | Precision Audio Signal Conditioning |
Use Scenario: Analog input modules in PLCs condition 4–20mA loop signals using precision op-amps and ADCs requiring stable reference rails. IC Role / Device Role / Timing Role: TL4050C50QDCKT provides excitation and scaling reference for current-to-voltage conversion and ratiometric ADC measurements. Use Value: ±0.5% tolerance and low long-term drift (120ppm after 1000h) reduce calibration frequency in field-deployed controllers. | Use Scenario: High-fidelity audio DACs in professional mixing consoles require low-noise, thermally stable references to minimize harmonic distortion. IC Role / Device Role / Timing Role: TL4050C50QDCKT establishes the full-scale voltage for 24-bit audio DACs operating from 5V supplies. Use Value: 93μVRMS noise floor directly translates to >100dB SNR in audio DAC output stages without added filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B50QDCKT | ±0.2% initial tolerance (vs. ±0.5%), same 50ppm/°C tempco and SC-70 package | Higher accuracy required for 14-bit data acquisition or closed-loop feedback sensing | Select when tighter initial error justifies cost premium; identical layout and thermal behavior. |
| REF3050AIDBZR | Series reference (not shunt); 5.0V, ±0.2%, 50ppm/°C, SOT-23-3, 50μA quiescent current | Requires input voltage ≥5.2V; unsuitable for low-headroom or floating-bias configurations | Choose only if system topology permits series architecture and higher supply margin is available. |
Compared with TL4050B50QDCKT, the TL4050C50QDCKT trades 0.3% initial accuracy for lower cost and identical thermal performance; versus REF3050AIDBZR, it offers shunt topology flexibility but requires external current-setting resistor and lacks enable control.
Availability
TL4050C50QDCKT is available at Aetrix Electronics and suitable for automotive power-supply monitors, industrial process controllers, and portable data-acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for TL4050C50QDCKT 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-grade components.
The TL4050 series belongs to TI's precision voltage reference product line, engineered for high-accuracy, low-drift, and micropower operation in harsh thermal environments including automotive and industrial applications.
FAQ
What is the maximum cathode current rating for TL4050C50QDCKT?
The absolute maximum continuous cathode current for TL4050C50QDCKT is 20mA, per TI's Absolute Maximum Ratings. However, the recommended operating range is 90μA to 15mA to ensure specified electrical performance-including tolerance, tempco, and noise-across the full –40°C to 125°C temperature range. Exceeding 15mA may degrade long-term stability.
Does TL4050C50QDCKT require an output capacitor for stability?
No, TL4050C50QDCKT does not require an output capacitor for stability. Its design is inherently stable with all capacitive loads, including direct connection to ADC input capacitors or long PCB traces. Adding a capacitor is optional and used only for additional noise filtering-not for loop compensation.
What is the thermal hysteresis specification for TL4050C50QDCKT?
The thermal hysteresis of TL4050C50QDCKT is 1.4mV, defined as the difference in 25°C output voltage measured after cycling from –40°C versus after cycling from 125°C. This parameter quantifies repeatability error in systems subject to repeated thermal cycling, such as automotive ECUs or outdoor industrial controllers.
Can TL4050C50QDCKT be used in place of TL4050C50IDCKT?
TL4050C50QDCKT replaces TL4050C50IDCKT in applications requiring operation beyond 85°C ambient. Both share identical electrical specs (tolerance, noise, tempco) and SC-70 packaging, but TL4050C50QDCKT is characterized from –40°C to 125°C, while the 'I' version is rated only to 85°C. No layout change is needed for drop-in replacement in high-temp environments.
What is the minimum cathode current needed for TL4050C50QDCKT to regulate properly?
The minimum cathode current for TL4050C50QDCKT is 90μA across the full –40°C to 125°C temperature range. At 25°C, typical minimum current is 56μA, but design must accommodate the worst-case 90μA to guarantee regulation under extreme cold or hot conditions. Below this, output voltage deviates from specification.
TL4050C50QDCKT 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- 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:
- SC-70-5
TL4050C50QDCKT FAQ
1.How can I place an order for TL4050C50QDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050C50QDCKT 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 TL4050C50QDCKT reliable?
The price and inventory of TL4050C50QDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050C50QDCKT is usually 5 days.
3.What payment methods are accepted for TL4050C50QDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050C50QDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050C50QDCKT?
TL4050C50QDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050C50QDCKT 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 TL4050C50QDCKT?
For technical support, including TL4050C50QDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050C50QDCKT requirements.
6.How does Aetrix verify that TL4050C50QDCKT is sourced from the original manufacturer or authorized distributors?
All TL4050C50QDCKT 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 TL4050C50QDCKT meets industry standards.
7.What is the process for return or replacement of TL4050C50QDCKT?
All TL4050C50QDCKT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050C50QDCKT, 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 TL4050C50QDCKT part is unused and in its original packaging.
Return procedure for TL4050C50QDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050C50QDCKT Tags
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TL431AIDBZR
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TL431BQDBZR
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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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