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Texas Instruments TL4050A25IDBZTG4
- Part No.:
- TL4050A25IDBZTG4
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050A25IDBZTG4.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,538
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Product details
Overview
TL4050A25IDBZTG4 from Texas Instruments is a precision 2.5V shunt voltage reference in SOT-23-3 package, delivering ±0.1% initial accuracy, 50ppm/°C temperature coefficient, 41μVRMS wideband noise, and stable operation from 60μA to 15mA cathode current across –40°C to 85°C. It serves as a low-noise, micropower reference in high-resolution ADC/DAC biasing and portable power-supply monitoring.
For engineers reviewing the TL4050A25IDBZTG4 datasheet, TL4050A25IDBZTG4 pinout, TL4050A25IDBZTG4 application, or TL4050A25IDBZTG4 equivalent, key selection criteria include initial tolerance, thermal hysteresis (0.7mV), dynamic impedance (0.3Ω), long-term stability (120ppm), and compatibility with capacitive loads without external compensation.
Technical Context
The TL4050A25IDBZTG4 operates as a two-terminal shunt reference requiring only an external series resistor to set cathode current. Its bandgap-based core delivers fixed 2.5V reverse breakdown voltage with minimal drift over temperature and load variations.
It features low dynamic impedance (0.3Ω at 1mA) and ultra-low noise (41μVRMS, 10Hz–10kHz), enabling use in 16-bit+ data acquisition where reference stability directly limits system ENOB. Thermal hysteresis is specified at 0.7mV over –40°C to 125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V nominal; tight regulation enables 1mV LSB alignment in 12-bit systems using 5V supplies. |
| Initial Accuracy | ±0.1% max at 25°C; supports high-precision calibration without post-manufacturing trimming. |
| Temp Coefficient | ±50ppm/°C max over –40°C to 85°C; contributes ≤0.125mV drift across full industrial range. |
| Noise (10Hz–10kHz) | 41μVRMS typical; low enough to avoid degrading SNR in 16-bit SAR ADCs with >90dB SFDR. |
| Dynamic Impedance | 0.3Ω at 1mA; ensures <1mV output shift under 1mA load transients, critical for fast-switching DACs. |
| Cathode Current Range | 60μA to 15mA typical; allows ultra-low-power sensor nodes (<100μA total system current) and robust industrial supplies. |
| Long-Term Stability | 120ppm after 1000h; predictable aging behavior supports 10+ year field reliability in energy metering. |
Pinout & Package
SOT-23-3 package (DBZ) with 1.3mm × 2.9mm footprint and 1.45mm height; optimized for space-constrained PCB layouts in portable instrumentation and automotive ECUs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground terminal | Connected to system GND; forms return path for cathode current and defines reference potential. |
| Cathode (Pin 2) | Output voltage node | Delivers regulated 2.5V; requires external series resistor (RS) to set operating current per shunt topology. |
| NC / Floating (Pin 3) | Unused terminal | Must be left unconnected or tied to Pin 2; internal parasitic Schottky diode prohibits connection to Anode. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with all capacitive loads up to 10µF; eliminates BOM cost and layout area for bypass caps in battery-powered designs. |
| Micropower operation | 60μA typical minimum cathode current enables operation from coin cells or energy-harvesting sources. |
| Extended temperature support | Rated for –40°C to 85°C ambient; validated for automotive cabin and industrial control environments. |
| Low thermal hysteresis | 0.7mV max; minimizes calibration drift after thermal cycling in test equipment and process controllers. |
| ESD robustness | ±2000V HBM rating; withstands handling in standard manufacturing without special ESD controls. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: High-resolution 16-bit SAR ADC front-end in portable multimeters and sensor nodes. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for ADC full-scale range, directly determining measurement resolution and accuracy. Use Value: 41μVRMS noise and 0.3Ω dynamic impedance prevent reference-induced quantization error, preserving >92dB SNR. |
Use Scenario: Real-time monitoring of 3.3V/5V rail integrity in telecom power shelves and server PSUs. IC Role / Device Role / Timing Role: Shunt reference feeding comparator or ADC input to detect undervoltage/overvoltage events. Use Value: ±0.1% initial tolerance and 50ppm/°C TC ensure trip-point accuracy remains within ±1.5mV over temperature. |
| Instrumentation & Test Equipment | Battery-Powered Equipment |
Use Scenario: Calibration-grade voltage source in handheld oscilloscope vertical amplifiers and DMM reference stages. IC Role / Device Role / Timing Role: Precision DC bias generator for amplifier offset nulling and gain-setting networks. Use Value: 120ppm long-term stability and 0.7mV thermal hysteresis enable annual recalibration intervals without performance degradation. |
Use Scenario: Reference for fuel gauging ICs and low-power microcontrollers in medical wearables and IoT trackers. IC Role / Device Role / Timing Role: Stable voltage基准 for ADC-based battery voltage sensing and state-of-charge estimation. Use Value: 60μA min cathode current allows direct biasing from LDO outputs, eliminating dedicated reference regulators and saving >150mW standby power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3025AIDBZR | 2.5V, ±0.2% initial accuracy, 50ppm/°C TC, 42μVRMS noise, SOT-23-3, but requires ≥100μA min current. | Higher min current increases power in sub-100μA systems; identical noise and TC suit mid-tier instrumentation. | Select when cost sensitivity outweighs ultra-low-current needs and ±0.2% tolerance is acceptable. |
| ADR3425ARJZ-R7 | 2.5V, ±0.1% initial accuracy, 10ppm/°C TC, 5.8μVRMS noise, SC70-5, but is series-type (3-pin) and requires 100μA–10mA supply current. | Lower noise and TC benefit metrology-grade gear; 3-pin architecture adds routing complexity vs. 2-pin shunt simplicity. | Select for ultra-low-drift lab equipment where board space permits SC70-5 and extra pin routing. |
Compared with REF3025AIDBZR and ADR3425ARJZ-R7, TL4050A25IDBZTG4 offers the lowest minimum operating current (60μA) and true 2-pin simplicity for shunt configurations, making it optimal for battery life-critical and layout-constrained designs-despite higher noise than ADR3425 and looser TC than ADR3425.
Availability
TL4050A25IDBZTG4 is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and battery-powered equipment requiring stable component supply with guaranteed long-term sourcing.
Supply support for TL4050A25IDBZTG4 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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs.
The TL4050 series belongs to TI's precision voltage reference product line, engineered specifically for high-accuracy, low-power, and thermally stable operation in portable instrumentation, industrial automation, and automotive subsystems.
FAQ
What is the maximum cathode current rating for TL4050A25IDBZTG4?
The absolute maximum cathode current for TL4050A25IDBZTG4 is 20mA, but the recommended operating range is 60μA to 15mA per datasheet Section 5.3. Exceeding 15mA risks exceeding thermal limits in SOT-23-3 packaging, especially above 70°C ambient. TL4050A25IDBZTG4 must be operated within this range to maintain ±0.1% accuracy and 50ppm/°C temperature coefficient.
Does TL4050A25IDBZTG4 require an output capacitor for stability?
No, TL4050A25IDBZTG4 does not require an output capacitor for stability-it is designed to remain stable with all capacitive loads, including 0μF. Adding a capacitor (e.g., 0.1μF) may reduce high-frequency noise but is optional and does not affect loop stability. This simplifies design in space-limited TL4050A25IDBZTG4 applications like wearable sensors.
How does the pin configuration of TL4050A25IDBZTG4 differ from standard SOT-23-3 devices?
TL4050A25IDBZTG4 uses non-standard SOT-23-3 pinout: Pin 1 = Anode (GND), Pin 2 = Cathode (2.5V output), Pin 3 = NC (must float or tie to Pin 2). Unlike typical 3-pin ICs, Pin 3 contains a parasitic Schottky diode to Pin 2; connecting it to Anode causes leakage. This unique mapping is critical for correct TL4050A25IDBZTG4 layout and avoids functional failure.
Can TL4050A25IDBZTG4 operate across the full –40°C to 125°C range?
No-TL4050A25IDBZTG4 is rated for –40°C to 85°C (industrial grade, denoted by "I" in part number). For extended temperature operation to 125°C, the Q-grade variant TL4050A25QDBZRG4 is required. Using TL4050A25IDBZTG4 beyond 85°C violates specifications and may cause output drift exceeding ±50ppm/°C and accelerated long-term drift.
What is the thermal hysteresis specification for TL4050A25IDBZTG4?
TL4050A25IDBZTG4 has a thermal hysteresis of 0.7mV, defined as the difference between VZ measured at 25°C after cycling to –40°C versus after cycling to 125°C. This low hysteresis ensures repeatable calibration in equipment subjected to repeated thermal cycles, such as field-deployed TL4050A25IDBZTG4-based test instruments.
TL4050A25IDBZTG4 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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 41µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TL4050A25IDBZTG4 FAQ
1.How can I place an order for TL4050A25IDBZTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050A25IDBZTG4 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 TL4050A25IDBZTG4 reliable?
The price and inventory of TL4050A25IDBZTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050A25IDBZTG4 is usually 5 days.
3.What payment methods are accepted for TL4050A25IDBZTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050A25IDBZTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050A25IDBZTG4?
TL4050A25IDBZTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050A25IDBZTG4 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 TL4050A25IDBZTG4?
For technical support, including TL4050A25IDBZTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050A25IDBZTG4 requirements.
6.How does Aetrix verify that TL4050A25IDBZTG4 is sourced from the original manufacturer or authorized distributors?
All TL4050A25IDBZTG4 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 TL4050A25IDBZTG4 meets industry standards.
7.What is the process for return or replacement of TL4050A25IDBZTG4?
All TL4050A25IDBZTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL4050A25IDBZTG4, 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 TL4050A25IDBZTG4 part is unused and in its original packaging.
Return procedure for TL4050A25IDBZTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050A25IDBZTG4 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
-
AZ431LANTR-G1
Diodes Incorporated
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