REF3333AIDCKTG4

Overview

The REF3333AIDCKTG4 is a fixed-output series voltage reference manufactured by Texas Instruments, delivering a nominal output of 3.3 V with an initial accuracy of ±0.15%. It operates within an input voltage range of 3.5 V to 5.5 V and supports a maximum load current of 5 mA. The device features a low quiescent current of 3.9 µA and a temperature coefficient of 30 ppm/°C. It is housed in a SC-70-3 surface-mount package and functions reliably across an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Provides stable 3.3 V reference output with high precision
• Optimized for ultra-low power consumption in battery applications
• Ensures long-term stability with low temperature drift characteristics

Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement systems
• Data acquisition channels

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's latest documentation to confirm compliance status and revision history. Ensure the SC-70-3 package matches the target PCB footprint. Confirm that the 3.9 µA supply current meets system power budgets. Validate humidity sensitivity levels for reflow soldering profiles.

Selection Notes

Select this component when a compact form factor is required alongside strict power constraints. The SC-70-3 package offers space efficiency compared to larger alternatives. The 30 ppm/°C drift rate suits applications where moderate thermal stability is acceptable. Verify that the 3.3 V output aligns with downstream ADC or comparator thresholds.

Part Context

This part belongs to the REF33xx family of CMOS voltage references designed for low-power, high-precision applications. It shares architectural similarities with other members like the REF3312 and REF3330 but differs in output voltage and package options. The G4 suffix typically indicates lead-free and RoHS-compliant manufacturing standards consistent with Texas Instruments' environmental policies.

Replacement Considerations

REF3333AIDCKR serves as a direct pin-compatible alternative within the same series.