ADR280AKS-R2

Overview

The ADR280AKS-R2 is a precision 1.2 V band gap voltage reference manufactured by Analog Devices Inc., housed in a compact 3-lead SC70 package. It operates within an input supply range of 2.4 V to 5.5 V and functions across an extended industrial temperature range from −40°C to +85°C. The device features ultralow power consumption with a maximum supply current of 16 μA, ensuring minimal impact on battery-operated systems. Key electrical characteristics include excellent line regulation at 2 ppm/V typical, high power supply ripple rejection of –80 dB at 220 Hz, and low output noise density of 12.5 nV/√Hz typical.

Feature Summary

• Provides a stable 1.2 V core band gap reference optimized for applications experiencing heavy dynamic supply variations.
• Features ultralow power supply current consumption suitable for portable battery-operated electronics.
• Delivers high power supply ripple rejection to maintain performance during RF power amplifier activity.
• Offers low output noise density and excellent line regulation for precision analog signal processing.

Applications

• GSM, GPRS, and 3G mobile station analog baseband ICs
• Portable battery-operated electronics
• Low voltage converter references

Procurement Notes

Verify the specific ordering suffix KS-3 confirms the 3-lead SC70 package configuration required for your PCB layout. Ensure the component meets RoHS compliance standards if mandated by your manufacturing process. Confirm that the operating temperature range of −40°C to +85°C aligns with your environmental specifications. Cross-reference the datasheet revision C for any updates to electrical characteristics or pin configurations before finalizing procurement.

Selection Notes

Select this component when a compact footprint and ultralow quiescent current are critical design constraints. The ADR280AKS-R2 is ideal for designs requiring high PSRR to mitigate noise from fluctuating battery voltages. Consider its limited load drive capability of 100 μA; external buffering may be necessary for higher current requirements. Evaluate the SC70 package dimensions against available board space to ensure mechanical compatibility.

Part Context

This part belongs to the ADR280 series of ultralow power voltage references designed specifically for mobile communication devices. The series includes variants in both SOT-23 and SC70 packages to accommodate different form factor requirements. The ADR280AKS-R2 variant specifically utilizes the smaller SC70 housing while maintaining the same electrical performance profile as other members of the family.

Replacement Considerations

Direct substitutes within the same package and specification profile include the ADR280ART-R2 (SOT-23) or other ADR280 variants with compatible thermal and electrical ratings. Verify pinout compatibility between SC70 and alternative packages if physical size reduction is not the primary driver for replacement.