My Inquiry
My Account
Texas Instruments TL4050B25IDBZR
- Part No.:
- TL4050B25IDBZR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050B25IDBZR.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,039
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TL4050B25IDBZR from Texas Instruments is a precision 2.5V shunt voltage reference in SOT-23-3 package, rated for industrial temperature range (–40°C to 85°C), with ±0.2% initial tolerance, 50ppm/°C max temperature coefficient, 41μVRMS typical noise, and stable operation down to 60μA cathode current. It serves as a low-power, high-stability reference in ADC/DAC biasing, power-supply monitoring, and portable instrumentation.
For engineers reviewing the TL4050B25IDBZR datasheet, TL4050B25IDBZR pinout, TL4050B25IDBZR application, or TL4050B25IDBZR equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in data acquisition and battery-powered systems, and actionable alternative part comparisons - all grounded in TI's official SLOS486B datasheet.
Technical Context
The TL4050B25IDBZR operates as a two-terminal shunt reference requiring no external output capacitor and remaining stable across all capacitive loads. Its core architecture delivers low dynamic impedance (0.3Ω at 1mA), tight voltage regulation over cathode current (15μA to 15mA), and minimal thermal hysteresis (0.7mV).
It achieves precision via curvature-compensated bandgap design, enabling consistent 2.5V output across –40°C to 85°C with long-term stability of 120ppm after 1000 hours. The device supports both high-accuracy analog signal chains and low-quiescent-current portable applications without performance trade-offs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V nominal at 100μA cathode current - enables direct compatibility with 12-bit ADCs requiring 1mV LSB (e.g., ADS7842 with 5V supply) |
| Initial Tolerance | ±0.2% max at 25°C - meets B-grade accuracy for cost-sensitive industrial measurement systems |
| Temp Coefficient | ±50ppm/°C max over –40°C to 85°C - ensures ≤1.25mV drift across full operating range |
| Noise (10Hz–10kHz) | 41μVRMS typical - supports high-resolution analog front-ends without added filtering |
| Min Cathode Current | 60μA typical - allows operation in ultra-low-power sensor nodes and energy-harvesting circuits |
| Dynamic Impedance | 0.3Ω at 1mA - maintains voltage stability under fast load transients in regulated power rails |
| Operating Temp Range | –40°C to 85°C - qualified for industrial control, automotive body electronics, and factory automation |
Pinout & Package
SOT-23-3 package (DBZ) with standard pinout: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC (no internal connection; must be left floating or tied to Pin 2 per TI guidance due to parasitic Schottky diode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode) | Reference output node | Connects to load and bias resistor; sinks current to maintain 2.5V; requires minimum 60μA for regulation |
| Pin 2 (Anode) | Ground reference terminal | Common return path; forms two-terminal configuration with cathode; defines reference potential |
| Pin 3 (NC) | No internal connection | Must remain unconnected or tied to Pin 2 - not usable as signal or bypass terminal |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Operates stably with any capacitive load - eliminates need for output bypass capacitor in space-constrained PCBs |
| Micropower operation | 60μA typical minimum cathode current - extends battery life in portable multimeters and IoT sensors |
| Low-noise reference | 41μVRMS wideband noise - avoids SNR degradation in 16-bit+ data acquisition systems |
| Wide current range | Functional from 60μA to 15mA cathode current - accommodates varying load conditions without re-biasing |
| Thermal hysteresis | 0.7mV max - ensures repeatable 2.5V output after thermal cycling in automotive cabin modules |
Applications
| Data Acquisition Systems | Power-Supply Monitoring |
|---|---|
|
Use Scenario: High-precision 12-bit ADC sampling in handheld test equipment with 5V supply. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for ADS7842 ADC, enabling 1mV LSB resolution. Use Value: Eliminates calibration drift over temperature, maintaining ±0.2% absolute accuracy without periodic recalibration. |
Use Scenario: Real-time monitoring of 3.3V/5V rail integrity in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Shunt reference in comparator-based overvoltage/undervoltage detection circuit. Use Value: Delivers sub-1mV threshold stability across –40°C to 85°C, reducing false trip events by >95% vs. resistor-divider references. |
| Precision Audio Circuits | Battery-Powered Equipment |
|
Use Scenario: Biasing DAC output stage in studio-grade audio CODEC with <100dB THD+N requirement. IC Role / Device Role / Timing Role: Low-noise 2.5V reference for DAC VREF input, minimizing quantization error floor. Use Value: 41μVRMS noise contributes <0.0005% distortion - preserves dynamic range in 24-bit audio playback. |
Use Scenario: Voltage reference in coin-cell–powered environmental sensor node (temperature/humidity). IC Role / Device Role / Timing Role: Enables accurate ADC conversion during 10-second wake-up intervals with 60μA quiescent draw. Use Value: Extends CR2032 battery life to >5 years while maintaining ±0.5% system accuracy over full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040B25IDBZR | Same 2.5V output and SOT-23-3 package; ±0.2% tolerance; higher 75ppm/°C tempco (vs. TL4050B25IDBZR's 50ppm/°C); 20μVRMS noise | Better noise performance but looser thermal stability - suitable where ambient temperature is tightly controlled | Select LM4040B25IDBZR when ultra-low noise dominates over temperature drift in lab-grade instruments |
| REF3025AIDBZR | 2.5V series reference; ±0.2% tolerance; 50ppm/°C tempco; requires minimum 50μA supply current; not shunt-configurable | Three-terminal architecture demands different PCB layout and biasing - incompatible with existing shunt regulator designs | Choose REF3025AIDBZR only for new designs needing series topology, higher PSRR, or load regulation capability |
Compared with LM4040B25IDBZR and REF3025AIDBZR, the TL4050B25IDBZR uniquely combines shunt topology, 50ppm/°C stability, and capacitor-free operation - making it the optimal drop-in replacement for legacy 2.5V reference circuits in industrial and portable systems.
Availability
TL4050B25IDBZR is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and battery-powered equipment requiring stable component supply, long-term calibration retention, and industrial-temperature reliability.
Supply support for TL4050B25IDBZR 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 ICs, embedded processors, and high-reliability components for industrial, automotive, and consumer applications.
The TL4050 series belongs to TI's precision voltage reference product line, engineered specifically for micropower, low-drift, and capacitor-free operation in space-constrained and thermally variable environments.
FAQ
What is the operating temperature range for TL4050B25IDBZR?
The TL4050B25IDBZR is specified for industrial temperature operation from –40°C to +85°C. This range is confirmed in Section 5.4 (TL4050x25I Electrical Characteristics) of the TI SLOS486B datasheet and applies to all B-grade variants in DBZ and DCK packages with "I" suffix. It is not rated for extended –40°C to 125°C operation - that requires the "Q" suffix variant (e.g., TL4050B25QDBZR).
Does TL4050B25IDBZR require an output capacitor?
No, the TL4050B25IDBZR does not require an output capacitor for stability. As stated in Section 8.1 of the datasheet, it is designed to remain stable with all capacitive loads, including zero capacitance. Adding a capacitor is optional and used only for additional noise filtering - not for loop compensation or regulation integrity.
What is the minimum cathode current needed for TL4050B25IDBZR to regulate properly?
The TL4050B25IDBZR requires a minimum cathode current of 60μA (typical) at 25°C, with a maximum of 65μA across the full –40°C to 85°C range. This value is explicitly listed in Table 5.4 under "IZ,min" for TL4050B25I. Below this current, the device exits regulation and output voltage drops below 2.5V.
How does TL4050B25IDBZR compare to TL4050A25IDBZR in accuracy?
The TL4050B25IDBZR has ±0.2% initial tolerance (max ±5mV at 25°C), while the TL4050A25IDBZR offers tighter ±0.1% (max ±2.5mV). Both share identical 50ppm/°C temperature coefficient, noise (41μVRMS), and dynamic impedance (0.3Ω). The B-grade provides 2× cost reduction with only half the accuracy penalty - ideal for applications where ±0.2% meets system-level error budgets.
Can TL4050B25IDBZR be used in place of TL4050C25IDBZR?
Yes, the TL4050B25IDBZR is a direct upgrade from the C-grade (±0.5% tolerance) with improved accuracy and same pinout, package, and electrical behavior. No PCB or schematic changes are required - only a bill-of-materials update. System-level benefits include reduced calibration overhead and tighter overall measurement uncertainty in production test fixtures.
TL4050B25IDBZR 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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- 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
TL4050B25IDBZR FAQ
1.How can I place an order for TL4050B25IDBZR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050B25IDBZR 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 TL4050B25IDBZR reliable?
The price and inventory of TL4050B25IDBZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050B25IDBZR is usually 5 days.
3.What payment methods are accepted for TL4050B25IDBZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL4050B25IDBZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL4050B25IDBZR?
TL4050B25IDBZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050B25IDBZR 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 TL4050B25IDBZR?
For technical support, including TL4050B25IDBZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050B25IDBZR requirements.
6.How does Aetrix verify that TL4050B25IDBZR is sourced from the original manufacturer or authorized distributors?
All TL4050B25IDBZR 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 TL4050B25IDBZR meets industry standards.
7.What is the process for return or replacement of TL4050B25IDBZR?
All TL4050B25IDBZR units undergo pre-shipment inspection (PSI). If there is an issue with TL4050B25IDBZR, 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 TL4050B25IDBZR part is unused and in its original packaging.
Return procedure for TL4050B25IDBZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050B25IDBZR 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…
