My Inquiry
My Account
Texas Instruments TL4050C41IDCKR
- Part No.:
- TL4050C41IDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TL4050C41IDCKR.pdf
- Description:
- IC VREF SHUNT 0.5% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,295
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TL4050C41IDCKR from Texas Instruments is a precision micropower shunt voltage reference with a fixed 4.096V output, ±0.5% initial tolerance (C grade), 50ppm/°C temperature coefficient, 93μVRMS wideband noise, and operation from –40°C to 85°C in SC-70 package. It serves as a stable reference for 12-bit data-acquisition systems, battery-powered instrumentation, and industrial power-supply monitors.
For engineers reviewing the TL4050C41IDCKR datasheet, TL4050C41IDCKR pinout, TL4050C41IDCKR application, or TL4050C41IDCKR equivalent, this page delivers verified specifications, validated pin functions, confirmed use cases in ADC biasing and low-power sensing, and two technically documented alternative parts with explicit performance trade-offs.
Technical Context
The TL4050C41IDCKR operates as a two-terminal shunt reference requiring no external capacitor for stability and supporting all capacitive loads. Its internal bandgap architecture delivers low dynamic impedance (0.5Ω at 1mA) and tight thermal hysteresis (1.148mV over –40°C to 125°C cycling).
It maintains regulation across a cathode current range of 52–15,000μA, with reverse breakdown voltage change ≤10mV from 1mA to 15mA load, and long-term stability of 120ppm after 1000 hours at 25°C.
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 | ±0.5% max at 25°C - defines worst-case reference error before calibration |
| Temp Coefficient | ±50ppm/°C max - contributes ≤0.204mV drift over 0–70°C ambient range |
| Output Noise | 93μVRMS (10Hz–10kHz) - limits effective resolution in high-precision analog front-ends |
| Min Cathode Current | 52μA typical - sets minimum bias for stable regulation in ultra-low-power designs |
| Dynamic Impedance | 0.5Ω at 1mA - ensures minimal output voltage shift under fast transient load changes |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded and automotive cabin applications |
Pinout & Package
TL4050C41IDCKR uses the SC-70 (DCK) 3-pin surface-mount package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained PCB layouts in portable and sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground terminal | Connected to system GND; forms return path for cathode current and load current |
| Cathode (Pin 2) | Output voltage node | Delivers regulated 4.096V; requires external series resistor (RS) to set total current |
| NC / Floating (Pin 3) | No-connect terminal | Must remain unconnected or tied to Pin 2 per TI design guidance to avoid parasitic Schottky conduction |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Operates stably with any capacitive load - eliminates need for output bypass capacitor and associated layout area |
| Micropower operation | 52μA minimum cathode current - supports >10-year battery life in always-on sensor nodes |
| Low-noise reference | 93μVRMS noise floor - preserves SNR in 12-bit+ SAR and delta-sigma ADC applications |
| Wide current range | 52μA to 15mA operating window - accommodates both ultra-low-power sleep modes and active high-speed conversion |
| Thermal hysteresis control | 1.148mV max hysteresis - ensures repeatable voltage accuracy after thermal cycling in industrial environments |
Applications
| Data-Acquisition Systems | Industrial Power-Supply Monitors |
|---|---|
Use Scenario: 12-bit ADC sampling of sensor signals in handheld test equipment. IC Role / Device Role / Timing Role: Provides precise 4.096V reference enabling 1mV LSB resolution with 5V supply. Use Value: Eliminates need for external trimming; maintains linearity over temperature without recalibration. |
Use Scenario: Real-time monitoring of 3.3V/5V/12V rail voltages in PLC backplanes. IC Role / Device Role / Timing Role: Shunt reference in comparator-based overvoltage/undervoltage detection circuits. Use Value: Stable threshold generation across –40°C to 85°C ensures reliable fault triggering without drift-induced false alarms. |
| Battery-Powered Instrumentation | Precision Audio Signal Chains |
Use Scenario: Portable multimeter measuring mV-range thermocouple outputs. IC Role / Device Role / Timing Role: Low-noise, micropower reference for op-amp gain-setting and ADC biasing. Use Value: 93μVRMS noise and 52μA min current extend battery life while preserving measurement fidelity. |
Use Scenario: DC offset calibration in Class-D amplifier feedback paths. IC Role / Device Role / Timing Role: Stable reference for DAC-controlled bias adjustment in audio codec interfaces. Use Value: 4.096V matches common digital audio full-scale codes, minimizing integer math in firmware scaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B41IDCKR | ±0.2% initial tolerance (vs. ±0.5%), same 4.096V output, identical SC-70 package and temp range | Higher accuracy enables uncalibrated 12-bit systems; tighter tolerance reduces post-factory calibration burden | Select when system-level accuracy requirements exceed ±0.5% or when reducing test time is critical |
| REF3040AIDBZR | 4.096V output, ±0.2% tolerance, 50ppm/°C, but higher 50μA typical quiescent current and SOT-23-3 package | Higher dynamic impedance (1.2Ω) and 120μVRMS noise limit use in noise-sensitive 16-bit ADCs | Choose if existing SOT-23 footprint compatibility is required and 0.2% tolerance suffices |
Compared with TL4050C41IDCKR, TL4050B41IDCKR improves initial accuracy by 0.3% at identical cost structure and layout, while REF3040AIDBZR trades SC-70 compactness for SOT-23 compatibility but introduces higher noise and impedance-making it less suitable for high-resolution, low-power signal chains.
Availability
TL4050C41IDCKR is available at Aetrix Electronics and suitable for industrial power-supply monitors, battery-powered instrumentation, and data-acquisition systems requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for TL4050C41IDCKR 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, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The TL4050 series belongs to TI's precision voltage reference product line, engineered specifically for cost-sensitive, space-constrained applications demanding micropower operation, low noise, and robust thermal performance without external compensation.
FAQ
What is the output voltage tolerance of TL4050C41IDCKR at 25°C?
The TL4050C41IDCKR has a maximum initial output voltage tolerance of ±0.5% at 25°C, corresponding to ±20.5mV around the nominal 4.096V output. This tolerance is guaranteed across the full industrial temperature range (–40°C to +85°C) per the C-grade specification in the datasheet.
Does TL4050C41IDCKR require an output capacitor for stability?
No, TL4050C41IDCKR does not require an output capacitor for stability. Its internal design ensures unconditional stability with all capacitive loads, including direct connection to ADC reference inputs or op-amp bias networks. Adding a capacitor is optional and only used for additional noise filtering.
What is the minimum cathode current needed for TL4050C41IDCKR to regulate properly?
The TL4050C41IDCKR requires a minimum cathode current of 52μA (typical) at 25°C to maintain regulation. Over the full temperature range (–40°C to +85°C), the guaranteed minimum is 73μA. Below this, the device exits regulation and output voltage drops nonlinearly.
How does TL4050C41IDCKR compare to TL4050A41IDCKR in terms of accuracy and application suitability?
TL4050C41IDCKR offers ±0.5% initial tolerance versus ±0.1% for TL4050A41IDCKR. Both share identical 4.096V output, SC-70 package, and temperature range. TL4050C41IDCKR suits cost-optimized industrial systems where post-calibration compensates for tolerance; TL4050A41IDCKR targets high-accuracy, calibration-free designs like medical sensors or metrology tools.
Can TL4050C41IDCKR be used in automotive under-hood applications?
TL4050C41IDCKR is rated for –40°C to +85°C operation and is not qualified for extended automotive under-hood temperatures (up to 125°C). For such environments, TI specifies the Q-grade variant TL4050C41QDCKR, which undergoes additional screening and guarantees performance across –40°C to +125°C.
TL4050C41IDCKR 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):
- 4.096V
- 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:
- 73 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TL4050C41IDCKR FAQ
1.How can I place an order for TL4050C41IDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050C41IDCKR 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 TL4050C41IDCKR reliable?
The price and inventory of TL4050C41IDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050C41IDCKR is usually 5 days.
3.What payment methods are accepted for TL4050C41IDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050C41IDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050C41IDCKR?
TL4050C41IDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050C41IDCKR 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 TL4050C41IDCKR?
For technical support, including TL4050C41IDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050C41IDCKR requirements.
6.How does Aetrix verify that TL4050C41IDCKR is sourced from the original manufacturer or authorized distributors?
All TL4050C41IDCKR 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 TL4050C41IDCKR meets industry standards.
7.What is the process for return or replacement of TL4050C41IDCKR?
All TL4050C41IDCKR units undergo pre-shipment inspection (PSI). If there is an issue with TL4050C41IDCKR, 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 TL4050C41IDCKR part is unused and in its original packaging.
Return procedure for TL4050C41IDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050C41IDCKR Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
