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Texas Instruments TL4050A41IDBZT
- Part No.:
- TL4050A41IDBZT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TL4050A41IDBZT.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:590
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Product details
Overview
TL4050A41IDBZT from Texas Instruments is a precision micropower shunt voltage reference delivering a stable 4.096V output with ±0.1% initial tolerance and ±50ppm/°C temperature coefficient over –40°C to 85°C. It operates from 68μA minimum cathode current up to 15mA, features 93μVRMS wideband noise, and maintains stability with any capacitive load-enabling use in 12-bit data-acquisition systems requiring 1mV LSB resolution.
For engineers reviewing the TL4050A41IDBZT datasheet, TL4050A41IDBZT pinout, TL4050A41IDBZT application, or TL4050A41IDBZT equivalent, key selection criteria include its A-grade accuracy, SOT-23-3 package footprint, low-noise performance, and compatibility with ADC/DAC reference inputs in battery-powered and industrial monitoring designs.
Technical Context
The TL4050A41IDBZT functions as a two-terminal shunt reference, sinking cathode current to regulate voltage across its anode–cathode terminals. Its internal bandgap core achieves tight initial tolerance and low thermal drift via curvature-compensated design, while dynamic impedance remains ≤0.5Ω at 1mA for minimal load regulation error.
It requires no external capacitor for stability and supports operation across full industrial temperature range (–40°C to 85°C) without derating. The device's low 68μA typical minimum cathode current enables efficient biasing in ultra-low-power sensor interfaces and portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal - matches 12-bit ADC full-scale range with 1mV LSB under 5V supply. |
| Initial Tolerance | ±0.1% max at 25°C - ensures ≤4.1mV absolute error before temperature or aging effects. |
| Temp Coefficient | ±50ppm/°C max - contributes ≤0.41mV drift over 100°C ambient swing. |
| Min Cathode Current | 68μA typical - allows operation from high-value bias resistors in low-quiescent-current circuits. |
| Output Noise | 93μVRMS (10Hz–10kHz) - preserves SNR in precision measurement front-ends. |
| Dynamic Impedance | 0.5Ω at 1mA - limits output voltage shift to ≤0.75mV under 1.5mA load transients. |
| Operating Temp | –40°C to +85°C - qualified for industrial control and automotive cabin electronics. |
Pinout & Package
SOT-23-3 package (DBZ), 2.92mm × 1.3mm × 1.02mm body, gull-wing leads, JEDEC MO-178AA compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference ground node | Connected to system ground; serves as voltage reference return path and thermal sink. |
| Cathode (Pin 2) | Regulated output node | Sinks current to maintain 4.096V between cathode and anode; connects to ADC VREF or DAC reference input. |
| No-Connect (Pin 3) | Unused terminal | Internally floating; must remain unconnected or tied to Pin 2 per TI recommendation to avoid parasitic Schottky conduction. |
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 designs. |
| Low 93μVRMS noise | Enables high-resolution analog measurements without additional filtering in 12-bit+ data acquisition paths. |
| 68μA min cathode current | Supports >100kΩ bias resistor values, reducing power draw in battery-operated sensor nodes. |
| ±0.1% initial accuracy | Meets tight calibration requirements in portable test equipment and medical diagnostics without factory trimming. |
| SOT-23-3 footprint | Provides drop-in replacement path for legacy references while enabling automated assembly on standard SMT lines. |
Applications
| Data-Acquisition Systems | Power-Supply Monitors |
|---|---|
Use Scenario: Reference for 12-bit SAR ADCs such as ADS7842 in portable multimeters and environmental sensors. IC Role / Device Role / Timing Role: Provides precise 4.096V reference enabling 1mV LSB resolution with 5V digital supply. Use Value: Eliminates need for external trimming or calibration due to ±0.1% initial tolerance and low thermal hysteresis (1.148mV). | Use Scenario: Monitoring 5V or 12V rails in programmable logic controllers and industrial I/O modules. IC Role / Device Role / Timing Role: Shunt reference in comparator-based overvoltage/undervoltage detection circuits. Use Value: Stable 4.096V threshold ensures consistent trip points across –40°C to 85°C without compensation circuitry. |
| Instrumentation & Test Equipment | Battery-Powered Equipment |
Use Scenario: Calibration reference in handheld oscilloscope front-ends and benchtop DMMs. IC Role / Device Role / Timing Role: Primary voltage standard for self-test and auto-zero routines during power-up. Use Value: Low 93μVRMS noise and ±50ppm/°C drift preserve measurement repeatability across operating temperature range. | Use Scenario: Reference for fuel gauging ICs and battery management system (BMS) cell voltage monitors. IC Role / Device Role / Timing Role: Supplies accurate reference to ADCs measuring Li-ion cell voltages (3.0–4.2V range). Use Value: 68μA minimum cathode current extends battery life in always-on monitoring applications. |
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 | 4.096V, ±0.2% initial tolerance, 50ppm/°C, 50μA min current, SOT-23-3 | Looser initial accuracy but lower quiescent current; same package and pinout | Preferred where cost sensitivity outweighs need for 0.1% grade; suitable for 10–11-bit systems. |
| ADR3440ARJZ-R7 | 4.096V, ±0.1% initial tolerance, 30ppm/°C, 120μA min current, SOT-23-5 | Tighter tempco but higher minimum current and different pinout (5-pin vs 3-pin) | Selected when <30ppm/°C drift is mandatory; requires PCB redesign due to pin count and layout mismatch. |
Compared with REF3041AIDBZR and ADR3440ARJZ-R7, TL4050A41IDBZT offers the lowest minimum cathode current among A-grade 4.096V shunt references in SOT-23-3, making it optimal for ultra-low-power industrial sensors where bias resistor size and battery runtime are critical constraints.
Availability
TL4050A41IDBZT is available at Aetrix Electronics and suitable for data-acquisition systems, power-supply monitors, and battery-powered instrumentation requiring stable component supply with guaranteed long-term sourcing.
Supply support for TL4050A41IDBZT 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 specializing in analog and embedded processing technologies, with leadership in precision analog ICs and industrial-grade components.
The TL4050 series belongs to TI's precision voltage reference product line, engineered specifically for high-accuracy, low-power shunt regulation in data converters, sensor signal chains, and portable test equipment.
FAQ
What is the output voltage and initial accuracy of TL4050A41IDBZT?
The TL4050A41IDBZT provides a nominal output voltage of 4.096V with a maximum initial tolerance of ±0.1% at 25°C. This specification is verified per TI's Electrical Characteristics table for TL4050A41I devices, ensuring ≤±4.1mV absolute error before temperature or aging effects are considered. The TL4050A41IDBZT maintains this accuracy across its rated industrial temperature range.
Does TL4050A41IDBZT require an external output capacitor?
No, TL4050A41IDBZT does not require an external output capacitor for stability. As confirmed in Section 8.1 of the datasheet, the device is designed to remain stable with all capacitive loads-including zero capacitance-eliminating the need for a bypass capacitor in most applications. This simplifies layout and reduces bill-of-materials cost without compromising regulation performance.
What is the minimum cathode current required for TL4050A41IDBZT to regulate properly?
The TL4050A41IDBZT requires a minimum cathode current of 68μA (typical) and 73μA (maximum over temperature) to maintain regulation. This value is specified in Table 5.6 (TL4050x41I Electrical Characteristics) and enables biasing from high-value resistors-supporting ultra-low-power operation in battery-powered instrumentation and remote sensor nodes.
How is TL4050A41IDBZT packaged, and what are its pin connections?
TL4050A41IDBZT uses the SOT-23-3 (DBZ) package with three gull-wing leads. Pin 1 is Anode (ground reference), Pin 2 is Cathode (4.096V output), and Pin 3 is a no-connect terminal that must remain unconnected or tied to Pin 2 to prevent parasitic conduction from the internal Schottky diode, as detailed in Section 8.2 of the datasheet.
Can TL4050A41IDBZT be used with 12-bit ADCs like the ADS7842?
Yes, TL4050A41IDBZT is explicitly designed for use with 12-bit data-acquisition systems such as the ADS7842. Its 4.096V output enables exactly 1mV LSB resolution when paired with a 5V digital supply, as illustrated in Figure 8-2 of the datasheet. The device's low noise (93μVRMS) and tight tolerance ensure full utilization of the ADC's dynamic range without calibration overhead.
TL4050A41IDBZT 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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- 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
TL4050A41IDBZT FAQ
1.How can I place an order for TL4050A41IDBZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL4050A41IDBZT 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 TL4050A41IDBZT reliable?
The price and inventory of TL4050A41IDBZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL4050A41IDBZT is usually 5 days.
3.What payment methods are accepted for TL4050A41IDBZT?
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4.How is shipping managed for TL4050A41IDBZT?
TL4050A41IDBZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL4050A41IDBZT 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 TL4050A41IDBZT?
For technical support, including TL4050A41IDBZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL4050A41IDBZT requirements.
6.How does Aetrix verify that TL4050A41IDBZT is sourced from the original manufacturer or authorized distributors?
All TL4050A41IDBZT 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 TL4050A41IDBZT meets industry standards.
7.What is the process for return or replacement of TL4050A41IDBZT?
All TL4050A41IDBZT units undergo pre-shipment inspection (PSI). If there is an issue with TL4050A41IDBZT, 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 TL4050A41IDBZT part is unused and in its original packaging.
Return procedure for TL4050A41IDBZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL4050A41IDBZT Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
Texas Instruments
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
Diodes Incorporated
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