REF3033AIDBZRG4

Overview

The REF3033AIDBZRG4 is a precision series voltage reference from Texas Instruments, delivering a fixed output of 3.3 V with an initial accuracy of 0.2%. It operates within a supply voltage range up to 5.5 V and draws a typical quiescent current of 42 uA, with a maximum rating of 50 uA. The device features a temperature coefficient of 75 ppm/°C and supports a maximum shunt current of 25 mA. It is housed in a compact SOT-23-3 package and functions reliably across an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Provides high precision with 0.2% initial accuracy for stable reference applications
• Operates with ultra-low power consumption suitable for battery-powered systems
• Ensures stability without requiring external load capacitors
• Supports high output current capability for driving moderate loads

Applications

• Loop-powered industrial sensors such as pressure and temperature transmitters
• Portable instrumentation and handheld measurement devices
• Analog-to-digital converter (ADC) reference inputs
• Medical equipment requiring precise voltage regulation

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's latest documentation to confirm compliance status and availability. Confirm that the SOT-23-3 package dimensions match your PCB footprint requirements. Ensure the operating environment stays within the specified -40°C to +125°C range to maintain the stated 0.2% accuracy and thermal drift specifications.

Selection Notes

Select this component when a fixed 3.3 V reference is required with minimal static current draw. It is appropriate for designs where space is limited due to the small SOT-23-3 form factor. Consider alternatives if higher current drive or lower temperature coefficients are needed, as this part prioritizes low power over extreme precision metrics.

Part Context

This part belongs to the REF30xx family of bandgap voltage references designed for low-power, high-precision applications. The family offers various fixed output voltages and accuracies, all sharing similar low-power characteristics and capacitor-free stability. The REF3033 variant specifically targets the common 3.3 V logic and analog system requirements.

Replacement Considerations

Check for REF3033AIDBZR or REF3033AIDBZT for equivalent performance in different packaging quantities. Verify pinout compatibility before substitution.