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Texas Instruments TL4050C50IDCKR
- Part No.:
- TL4050C50IDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TL4050C50IDCKR.pdf
- Description:
- IC VREF SHUNT 0.5% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,808
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Product details
Overview
TL4050C50IDCKR from Texas Instruments is a precision micropower shunt voltage reference with a fixed 5.0V output, ±0.5% initial tolerance (C grade), 50ppm/°C temperature coefficient, 93μVRMS wideband noise, and stable operation from 56μA to 15mA cathode current - used in high-accuracy ADC/DAC biasing and portable power-supply monitoring.
For engineers reviewing the TL4050C50IDCKR datasheet, TL4050C50IDCKR pinout, TL4050C50IDCKR application, or TL4050C50IDCKR equivalent, this page delivers verified electrical specs, SOT-23-3 pin functions, industrial-grade thermal performance (–40°C to 85°C), and real-world design guidance for data-acquisition and battery-powered systems.
Technical Context
The TL4050C50IDCKR operates as a two-terminal shunt reference requiring no external capacitor for stability and maintaining regulation across capacitive loads up to 100nF. Its bandgap-based core delivers low dynamic impedance (0.5Ω at 1mA) and tight voltage regulation over 56μA–15mA cathode current range.
Designed for cost-sensitive precision applications, it features thermal hysteresis of 1.4mV and long-term stability of 120ppm after 1000 hours. The C-grade variant targets applications where ±0.5% accuracy and 50ppm/°C drift meet system-level calibration budgets without premium-grade pricing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V nominal at 100μA cathode current - sets precise full-scale reference for 12-bit ADCs (e.g., 1mV LSB with 4.096V variant) and analog signal chains. |
| Initial Tolerance | ±0.5% max at 25°C - defines worst-case DC offset in measurement systems before calibration; C-grade balances cost and performance for non-critical instrumentation. |
| Temp Coefficient | ±50ppm/°C max over –40°C to 85°C - contributes ≤0.4mV drift across full industrial range, enabling stable readings in uncontrolled ambient environments. |
| Noise (10Hz–10kHz) | 93μVRMS typical - limits resolution in low-noise sensor interfaces and audio references; lower than TL4050x25 but higher than x41 variant. |
| Min Cathode Current | 56μA typical (80μA max over temp) - enables ultra-low-power operation in battery-backed RTCs and energy-harvesting nodes with minimal quiescent drain. |
| Dynamic Impedance | 0.5Ω at 1mA, 120Hz - ensures <1mV load-induced error for 0.5mA step changes, critical for multiplexed ADC reference sharing. |
| Thermal Hysteresis | 1.4mV over –40°C ↔ 125°C cycling - defines repeatability error after thermal stress, relevant for field-deployed test equipment. |
Pinout & Package
TL4050C50IDCKR is housed in a SC-70 (DCK) 3-pin surface-mount package measuring 2.0mm × 2.1mm × 0.9mm, optimized for space-constrained PCB layouts in portable instrumentation and wearables.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Connected to system GND; serves as return path for cathode current and load current - must be low-impedance to avoid ground bounce errors. |
| Cathode (Pin 2) | Regulated output terminal | Delivers stable 5.0V; sinks total current (IZ + IL); requires series resistor (RS) to limit IZ within 56μA–15mA operating window. |
| NC / Floating (Pin 3) | No-connect terminal | Internally unused; must remain floating or tied to Pin 2 per TI recommendation to avoid parasitic Schottky conduction in SOT-23 variants - not applicable to DCK but retained for package consistency. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates need for output bypass capacitor - reduces BOM count and layout area in compact sensor nodes and medical patches. |
| Wide cathode current range | Operates from 56μA to 15mA - supports both ultra-low-power sleep modes and high-speed data acquisition bursts without reference dropout. |
| Low 93μVRMS noise | Enables 14-bit effective resolution in 12-bit ADC systems when combined with proper filtering - critical for precision weight scales and pH meters. |
| Industrial temperature range | Specified from –40°C to +85°C - ensures reliable operation in automotive cabin modules, industrial PLC I/O cards, and outdoor metering hardware. |
| SC-70 package footprint | 2.0mm × 2.1mm body with 0.65mm pitch - compatible with standard reflow profiles and automated optical inspection, reducing assembly risk in high-volume production. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: 12-bit SAR ADC (e.g., ADS7842) digitizing sensor outputs in handheld test equipment. IC Role / Device Role / Timing Role: Provides stable 5.0V reference voltage for ADC full-scale calibration and ratiometric measurements. Use Value: Enables ±0.5% absolute accuracy without factory trim; 93μVRMS noise avoids adding quantization uncertainty beyond LSB. |
Use Scenario: Monitoring 12V rail in telecom power shelf using resistive divider into microcontroller ADC. IC Role / Device Role / Timing Role: Supplies precise 5.0V reference to MCU's internal ADC, rejecting supply ripple via shunt topology. Use Value: Maintains ±0.5% reading accuracy across –40°C to 85°C ambient, eliminating need for software temperature compensation. |
| Portable Instrumentation | Battery-Powered Equipment |
Use Scenario: Handheld multimeter with auto-ranging analog front-end and Li-ion battery supply. IC Role / Device Role / Timing Role: References op-amp gain stages and ADC inputs during battery voltage sag (3.0V–4.2V). Use Value: 56μA minimum cathode current allows operation down to 3.0V supply with >10-year shelf life on coin-cell backup. |
Use Scenario: Wireless environmental sensor node powered by CR2032 coin cell with 10-year target lifetime. IC Role / Device Role / Timing Role: Supplies reference to ultra-low-power ADC sampling temperature/humidity every 60 seconds. Use Value: Sub-100μA quiescent operation extends battery life; SC-70 package minimizes PCB area for compact enclosure design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B50IDCKR | ±0.2% initial tolerance, same 50ppm/°C TC and 93μVRMS noise | Higher accuracy required in calibrated test gear where ±0.5% introduces unacceptable gain error | Select when system-level calibration budget demands tighter initial error without upgrading to A grade. |
| REF3050AIDBZR | Series topology, 5.0V, ±0.2% tolerance, 50ppm/°C, 41μVRMS noise, 50μA IQ | Requires input voltage ≥5.3V; unsuitable for low-dropout or reverse-polarity protection schemes | Choose for lower noise and series-regulator simplicity where supply headroom permits and ground-referenced load is acceptable. |
Compared with TL4050B50IDCKR, the TL4050C50IDCKR trades 0.3% initial accuracy for lower cost in volume production; versus REF3050AIDBZR, it offers shunt flexibility and no minimum input voltage, but with higher noise and ground-referenced output constraints.
Availability
TL4050C50IDCKR is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and portable instrumentation requiring stable component supply with guaranteed long-term sourcing.
Supply support for TL4050C50IDCKR 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 leader delivering analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.
The TL4050 series was engineered as a family of micropower shunt references targeting cost-sensitive, space-constrained applications needing stable voltage references without external compensation components.
FAQ
What is the minimum cathode current required for TL4050C50IDCKR to regulate properly?
The TL4050C50IDCKR requires a minimum cathode current of 56μA typical (80μA maximum over –40°C to 85°C) to maintain regulation. Below this threshold, output voltage deviates from 5.0V; design RS to ensure IZ stays above 80μA under worst-case low-VS and high-IL conditions. This value is confirmed in Section 5.8 of the official datasheet.
Does TL4050C50IDCKR require an output capacitor for stability?
No, TL4050C50IDCKR does not require an output capacitor and is stable with all capacitive loads - including 0μF. While a bypass cap may reduce high-frequency noise, it is never needed for loop stability. This behavior is intrinsic to its shunt architecture and explicitly validated in Section 8.1 of the TI datasheet.
What is the thermal hysteresis specification for TL4050C50IDCKR?
The thermal hysteresis of TL4050C50IDCKR is 1.4mV, defined as the difference between VZ measured at 25°C after cycling to –40°C versus after cycling to 125°C. This parameter directly impacts repeatability in field-deployed equipment subject to repeated thermal cycling, and is specified in Table 5.8 of the datasheet.
Can TL4050C50IDCKR be used in automotive under-hood applications?
TL4050C50IDCKR is rated for –40°C to +85°C (industrial grade), making it suitable for cabin and infotainment modules but not under-hood locations requiring 125°C operation. For extended temperature use, select TL4050C50QDCKR (–40°C to 125°C), which shares identical electrical specs but is qualified to automotive AEC-Q100 Grade 2.
How does the noise performance of TL4050C50IDCKR compare to the 2.5V variant?
TL4050C50IDCKR exhibits 93μVRMS wideband noise (10Hz–10kHz), higher than the TL4050C25IDCKR's 41μVRMS due to inherent scaling in bandgap reference design. This makes the 2.5V variant preferable for ultra-low-noise applications like precision weigh scales, while the 5.0V version suits general-purpose ADC referencing where noise is less dominant.
TL4050C50IDCKR 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):
- 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:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TL4050C50IDCKR FAQ
1.How can I place an order for TL4050C50IDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050C50IDCKR 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 TL4050C50IDCKR reliable?
The price and inventory of TL4050C50IDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050C50IDCKR is usually 5 days.
3.What payment methods are accepted for TL4050C50IDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050C50IDCKR transactions.
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4.How is shipping managed for TL4050C50IDCKR?
TL4050C50IDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050C50IDCKR 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 TL4050C50IDCKR?
For technical support, including TL4050C50IDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050C50IDCKR requirements.
6.How does Aetrix verify that TL4050C50IDCKR is sourced from the original manufacturer or authorized distributors?
All TL4050C50IDCKR 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 TL4050C50IDCKR meets industry standards.
7.What is the process for return or replacement of TL4050C50IDCKR?
All TL4050C50IDCKR units undergo pre-shipment inspection (PSI). If there is an issue with TL4050C50IDCKR, 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 TL4050C50IDCKR part is unused and in its original packaging.
Return procedure for TL4050C50IDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050C50IDCKR Tags
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