REF3040TB-GT3

Overview

The REF3040TB-GT3 is a high precision CMOS voltage reference providing a nominal output of 4.096 V with an initial accuracy of ±0.2%. It operates within a supply voltage range of 2.7 V to 5.5 V and supports sourcing or sinking up to 10 mA of load current. The device exhibits a maximum temperature drift of 50 ppm/°C over the specified -40°C to +85°C operating range. It features low quiescent current of 30 µA max, line regulation of 100 µV/V, and thermal hysteresis of 100 ppm. Packaged in a space-saving SOT-23-3 (CASE 527AG) format, it typically requires no output bypass capacitor.

Feature Summary

• Provides stable 4.096 V reference with ±0.2% initial accuracy
• Supports bidirectional current flow up to 10 mA source or sink
• Maintains low temperature drift of 50 ppm/°C across wide range
• Operates on supply voltages from 2.7 V to 5.5 V

Applications

• Battery Powered Systems
• A/D and D/A Converters
• Precision Regulator Systems
• Power Supplies
• Portable Medical Equipment

Procurement Notes

Verify component authenticity by cross-referencing the marking diagram S3YM with the specific device code. Confirm package type matches SOT-23 (CASE 527AG). Ensure ordering suffix GT3 aligns with tape and reel specifications. Check factory availability for custom voltage variants if standard options are insufficient.

Selection Notes

Select this part when a 4.096 V reference is required with high accuracy and low drift. Consider the 10 mA current capability for driving loads directly. Evaluate the SOT-23-3 footprint for space-constrained designs. Verify input voltage stays within 2.7 V to 5.5 V limits to ensure proper dropout performance.

Part Context

Part of the REF30xx family of high precision, low drift CMOS voltage references. Includes variants like REF3012, REF3020, REF3025, REF3030, and REF3033 offering different nominal voltages. All share similar electrical characteristics and packaging.

Replacement Considerations

Direct substitutes include other REF30xx series parts with matching voltage ratings. Verify pinout compatibility with SOT-23-3 packages. Check if alternative manufacturers offer equivalent specs for 4.096 V references.