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Texas Instruments TL4050B41IDBZRG4
- Part No.:
- TL4050B41IDBZRG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050B41IDBZRG4.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,100
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Product details
Overview
TL4050B41IDBZRG4 from Texas Instruments is a precision micropower shunt voltage reference delivering a stable 4.096V output with ±0.2% initial tolerance (B grade), 50ppm/°C temperature coefficient, 93μVRMS wideband noise, and operation from –40°C to 85°C in SOT-23-3 package. It serves as the reference source in 12-bit data-acquisition systems where 1mV LSB resolution is required.
For engineers reviewing the TL4050B41IDBZRG4 datasheet, TL4050B41IDBZRG4 pinout, TL4050B41IDBZRG4 application, or TL4050B41IDBZRG4 equivalent, key selection factors include cathode current range (52–68μA min to 15mA max), dynamic impedance (0.5Ω at 1mA), thermal hysteresis (1.148mV), and compatibility with all capacitive loads without external stabilization.
Technical Context
The TL4050B41IDBZRG4 operates as a two-terminal shunt reference, requiring only an external series resistor to set cathode current. Its internal bandgap core achieves low drift via curvature compensation, enabling stable regulation across 60μA–15mA operating current and full industrial temperature range.
It exhibits low dynamic impedance (0.5Ω) and minimal voltage change with load current (≤7mV over 1–15mA), making it suitable for high-precision ADC/DAC biasing where supply rejection and noise coupling must be minimized. No output capacitor is required due to inherent stability with any capacitive load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal - matches 12-bit full-scale range of 5V-supplied ADCs (e.g., ADS7842) for exact 1mV LSB. |
| Initial Tolerance | ±0.2% max at 25°C - defines worst-case DC error budget before calibration in precision measurement systems. |
| Temp Coefficient | ±50ppm/°C max - contributes ≤0.41mV drift over –40°C to 85°C ambient, critical for uncalibrated field instruments. |
| Wideband Noise | 93μVRMS (10Hz–10kHz) - limits effective resolution to ~15.5 ENOB in noise-sensitive 16-bit+ acquisition paths. |
| Min Cathode Current | 52μA typical - sets minimum RS value in shunt regulator design; enables ultra-low-power battery operation. |
| Dynamic Impedance | 0.5Ω at 1mA - ensures <0.5mV output shift under 1mA transient load steps, preserving reference integrity during sampling. |
| Thermal Hysteresis | 1.148mV - quantifies non-repeatability after thermal cycling; impacts repeatability in lab-grade test equipment. |
Pinout & Package
SOT-23-3 package (DBZ) with 1.4mm × 2.9mm footprint, 1.1mm height, and gull-wing leads. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Must connect to system analog ground; parasitic Schottky diode to Pin 3 requires Pin 3 to float or tie to Pin 2. |
| Cathode (Pin 2) | Output voltage terminal | Delivers regulated 4.096V; connects to ADC VREF or DAC reference input; carries total load + bias current. |
| No-Connect (Pin 3) | Unused terminal | Internally connected to cathode via Schottky diode; must remain floating or shorted to Pin 2 per TI recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with all capacitive loads | Eliminates need for output bypass capacitor - reduces BOM count and PCB area in space-constrained portable designs. |
| Low 93μVRMS noise | Enables direct use in 16-bit SAR ADC references without external filtering, preserving signal chain SNR. |
| 45–15000μA operating range | Supports both microamp-level sensor front-ends and 15mA-driven buffer stages without redesign. |
| –40°C to 85°C operation | Validated performance across industrial ambient range - no derating needed for factory automation or power metering. |
| 0.5Ω dynamic impedance | Minimizes interaction with switching regulators or digital noise sources feeding the reference node. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution voltage measurement in portable multimeters and handheld analyzers. IC Role / Device Role / Timing Role: Primary reference for 12–16-bit SAR ADCs, setting absolute accuracy of digitized readings. Use Value: 4.096V output enables exact 1mV LSB scaling with 5V supplies, eliminating software gain correction. | Use Scenario: Real-time monitoring of rail voltages in telecom rectifiers and server PSUs. IC Role / Device Role / Timing Role: Shunt reference for comparator-based overvoltage/undervoltage detection circuits. Use Value: Low 52μA minimum current allows monitoring without loading sensitive feedback networks. |
| Instrumentation & Test Equipment | Battery-Powered Equipment |
Use Scenario: Calibration-grade voltage source in benchtop DMMs and calibrators. IC Role / Device Role / Timing Role: Stable excitation source for ratiometric sensor bridges and precision DAC outputs. Use Value: 1.148mV thermal hysteresis and 120ppm long-term stability support traceable metrology workflows. | Use Scenario: Reference for gas sensors and environmental monitors operating on coin cells. IC Role / Device Role / Timing Role: Low-power voltage reference for microcontroller ADCs in IoT edge nodes. Use Value: 68μA max minimum cathode current extends battery life beyond 10 years in sleep-dominated duty cycles. |
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 | 3.0ppm/°C typical tempco vs. TL4050B41IDBZRG4's 50ppm/°C max; higher 120μA min current; SC-70 only. | Preferred for metrology-grade instruments requiring sub-10ppm/°C drift; not suitable for ultra-low-current battery apps. | Select REF3041AIDBZR when long-term stability and low drift outweigh power constraints. |
| ADR3440ARJZ-R7 | 4.096V output, ±0.1% initial accuracy, 30ppm/°C max, but requires 100μA min current and SC-70 package. | Better accuracy/tempco than TL4050B41IDBZRG4, yet incompatible with <100μA systems; higher cost. | Choose ADR3440ARJZ-R7 for calibrated medical devices where 0.1% tolerance is mandatory. |
Compared with REF3041AIDBZR and ADR3440ARJZ-R7, TL4050B41IDBZRG4 offers the lowest minimum operating current (52μA) and widest cathode current range (52μA–15mA), making it uniquely suited for cost-sensitive, battery-operated 12-bit data loggers where moderate drift is acceptable.
Availability
TL4050B41IDBZRG4 is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and battery-powered instrumentation requiring stable component supply with consistent parametric performance across production lots.
Supply support for TL4050B41IDBZRG4 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, specializing in analog and embedded processing technologies with over 90 years of innovation in precision analog ICs.
The TL4050 series belongs to TI's precision voltage reference product line, engineered specifically for cost-sensitive, low-power applications demanding stable DC reference voltage without external components or layout constraints.
FAQ
What is the output voltage tolerance of TL4050B41IDBZRG4 at 25°C?
The TL4050B41IDBZRG4 has a maximum initial output voltage tolerance of ±0.2% at 25°C, corresponding to ±8.2mV around the nominal 4.096V output. This specification is guaranteed per TI's electrical characteristics table for the B-grade industrial-temperature variant.
Does TL4050B41IDBZRG4 require an output capacitor for stability?
No, TL4050B41IDBZRG4 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 large bulk capacitance. Adding a capacitor is optional and does not affect regulation.
What is the minimum cathode current needed for TL4050B41IDBZRG4 to regulate properly?
The TL4050B41IDBZRG4 requires a minimum cathode current of 52μA (typical) and 68μA (maximum) at 25°C to maintain regulation. Below this threshold, the device exits its specified operating region and output voltage deviates from 4.096V.
Can TL4050B41IDBZRG4 be used in automotive applications?
TL4050B41IDBZRG4 is rated for –40°C to 85°C operation and is not qualified to AEC-Q100 standards. For automotive under-hood applications requiring extended temperature range (–40°C to 125°C), TI offers the Q-grade variant TL4050B41QDBZR, not TL4050B41IDBZRG4.
How does the noise performance of TL4050B41IDBZRG4 compare to other 4.096V references?
TL4050B41IDBZRG4 delivers 93μVRMS wideband noise (10Hz–10kHz), which is higher than premium references like REF3041 (35μVRMS) but sufficient for 12–14-bit systems. Its noise is measured under standardized conditions (IZ = 100μA) and directly impacts achievable ENOB in precision ADC applications.
TL4050B41IDBZRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- 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:
- SOT-23-3
TL4050B41IDBZRG4 FAQ
1.How can I place an order for TL4050B41IDBZRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B41IDBZRG4 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 TL4050B41IDBZRG4 reliable?
The price and inventory of TL4050B41IDBZRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B41IDBZRG4 is usually 5 days.
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TL4050B41IDBZRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B41IDBZRG4 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 TL4050B41IDBZRG4?
For technical support, including TL4050B41IDBZRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B41IDBZRG4 requirements.
6.How does Aetrix verify that TL4050B41IDBZRG4 is sourced from the original manufacturer or authorized distributors?
All TL4050B41IDBZRG4 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 TL4050B41IDBZRG4 meets industry standards.
7.What is the process for return or replacement of TL4050B41IDBZRG4?
All TL4050B41IDBZRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B41IDBZRG4, 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 TL4050B41IDBZRG4 part is unused and in its original packaging.
Return procedure for TL4050B41IDBZRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050B41IDBZRG4 Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
Microchip Technology
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LM4040CYM3-4.1-TR
Microchip Technology
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LM4040EIM3-2.5/NOPB
Texas Instruments
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
Texas Instruments
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LM4041DIM3-ADJ/NOPB
Texas Instruments
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LM4040DIM3X-2.5/NOPB
Texas Instruments
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LM4040DIM3-2.5/NOPB
Texas Instruments
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AZ431LANTR-G1
Diodes Incorporated
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