REF2033AIDDCR

Overview

The REF2033AIDDCR is a dual-output series voltage reference from Texas Instruments, housed in a SOT-23-Thin-5 package. It provides fixed output voltages of 1.65 V and 3.3 V with an initial accuracy of ±0.05%. The device operates within an input voltage range of 3.32 V to 5.5 V and draws a supply current of 460 µA. It supports a maximum output current of 20 mA per channel and features a temperature coefficient of 8 ppm/°C. The component functions reliably across a wide operating temperature range from -40°C to +125°C.

Feature Summary

• Dual-channel architecture delivering independent 1.65 V and 3.3 V references
• High precision with ±0.05% initial accuracy and low drift characteristics
• Compact surface-mount design suitable for space-constrained applications

Applications

• Interleaved analog-to-digital converter (ADC) systems
• Low-cost low-power small form-factor analog front ends
• Portable instrumentation requiring stable dual rails

Procurement Notes

Verify the suffix DDCR corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the specific grade 'A' meets the stringent accuracy requirements of the target circuit design. Ensure compatibility with standard SOT-23-Thin-5 footprint layouts during PCB fabrication planning.

Selection Notes

Select this component when dual isolated voltage rails are necessary from a single source without external resistors. The low noise profile and high accuracy make it suitable for precision measurement circuits. Consider the thermal management capabilities required for operation at the upper end of the specified temperature range.

Part Context

This part belongs to the REF20xx family of low-drift, low-power voltage references designed by Texas Instruments. It serves as a compact alternative to discrete resistor divider networks, offering superior stability and reduced board space consumption in power management integrated circuits.

Replacement Considerations

REF2033AIDDCT is available in cut-tape packaging instead of reel.