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Product Detailed Parameters
- Description：IC VREF SERIES 0.15% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Current - Output：5 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The REF3333AIDBZT is a precision voltage reference IC manufactured by Texas Instruments, housed in an SOT-23-3 surface-mount package. It provides a fixed output voltage of 3.3V with an initial accuracy of ±0.1%. The device features a low temperature coefficient of 30ppm/°C and operates within an input voltage range of 2.7V to 5.5V. Quiescent current is typically 3.9µA, supporting a maximum load current of 25mA across an operating temperature range of -40°C to +125°C.
Feature Summary
- Delivers high-precision 3.3V output with ±0.1% initial accuracy for sensitive measurement applications.
- Exhibits low temperature drift of 30ppm/°C to maintain stability across wide thermal variations.
- Consumes minimal quiescent current of 3.9µA, optimizing power efficiency in battery-operated systems.
Applications
- Precision data acquisition systems requiring stable reference voltages
- Battery-powered instrumentation with strict power budget constraints
- Industrial process control loops demanding high thermal stability
Procurement Notes
Verify the complete part number including suffix 'A' and package code 'DBZT' against official Texas Instruments documentation to ensure correct accuracy grade and packaging. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer, as supply chain conditions vary. Ensure ESD handling protocols are followed during storage and assembly due to the sensitivity of CMOS-based voltage reference circuits.
Selection Notes
Select this component when application requirements demand superior long-term stability and low temperature drift compared to standard bandgap references. The ±0.1% initial accuracy makes it suitable for high-resolution ADC/DAC interfaces where reference error directly impacts system linearity. Consider the 3.9µA quiescent current for portable designs, while ensuring the 25mA drive capability meets downstream load requirements without excessive dropout voltage.
Part Context
This device belongs to the REF33xx family of low-power, high-precision voltage references from Texas Instruments. It shares the SOT-23-3 footprint with other variants but distinguishes itself through tighter initial accuracy specifications and lower temperature coefficients. The family targets applications requiring reliable performance in compact form factors without compromising electrical precision.
Replacement Considerations
Cross-reference with REF3330AIDBZT for identical performance characteristics at different output voltages. Verify pinout compatibility with REF3033AIDBZT if upgrading from older series, noting potential differences in initial accuracy and noise specifications that may affect circuit calibration requirements.
FAQ
What is the maximum load current the REF3333AIDBZT can source?
The device supports a maximum load current of 25mA, allowing it to drive moderate loads directly without external buffering.
Does the REF3333AIDBZT require external compensation capacitors?
No external compensation capacitors are required for stability; however, a small bypass capacitor near the input pin is recommended to filter supply noise.
