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Product Detailed Parameters
- Description：IC VREF SERIES 0.15% SC70-3
- 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：SC-70, SOT-323
- Supplier Device Package：SC-70-3
- Grade：-
- Qualification：-
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Overview
The REF3333AIDCKR is a fixed-output series voltage reference manufactured by Texas Instruments, providing a nominal output of 3.3 V. It features an initial accuracy of ±0.15% and a temperature coefficient of 30 ppm/°C. The device operates within an input voltage range of 3.5 V to 5.5 V and supports a maximum shunt current of 5 mA. It consumes a typical supply current of 3.9 µA. The component is housed in a SC-70-3 surface-mount package and functions across a wide operating temperature range from -40°C to +125°C.
Feature Summary
- Provides stable 3.3 V reference with high precision
- Ultra-low power consumption for battery applications
- Compact SC-70-3 surface-mount packaging
Applications
- Portable instrumentation systems
- Battery-powered measurement devices
- Data acquisition signal conditioning
Procurement Notes
Verify the specific suffix 'CKR' corresponds to the SC-70-3 package and tape-and-reel delivery format as documented in the official datasheet. Confirm that the 'A' grade designation aligns with the required ±0.15% initial accuracy specifications for your design. Ensure compatibility with the 3.5 V minimum input voltage requirement during system operation.
Selection Notes
Select this component when a low-power, compact voltage reference is required for 3.3 V systems. The 3.9 µA quiescent current makes it suitable for energy-constrained designs. Verify that the 30 ppm/°C drift meets thermal stability requirements compared to lower-drift alternatives like the REF20xx series if higher precision is needed.
Part Context
This part belongs to the REF33xx family of low-drift voltage references from Texas Instruments. The family includes variants with different output voltages and packages, such as SOT-23-3 and UQFN-8. The REF3333 specifically targets the 3.3 V output requirement within this portfolio.
Replacement Considerations
The REF3333AIDCKT serves as a cut-tape alternative to the reel-packaged CKR variant. Other family members like REF3330 provide similar performance at a 3.0 V output.
