ADR280ARTZ-REEL7

Overview

The ADR280ARTZ-REEL7 is a precision voltage reference featuring a 1.2 V band gap core, manufactured by Analog Devices Inc. It operates within a supply voltage range of 2.4 V to 5.5 V and delivers an output voltage of 1.200 V typical. The device exhibits excellent line regulation at 2 ppm/V typical and high power supply ripple rejection of –80 dB at 220 Hz. It consumes a maximum supply current of 16 μA and maintains a temperature coefficient of 40 ppm/°C maximum over the industrial operating temperature range of −40°C to +85°C. Packaged in a compact 3-lead SOT-23 format, it provides low noise performance with a density of 12.5 nV/√Hz typical.

Feature Summary

• Provides a stable 1.2 V band gap core reference optimized for applications experiencing heavy dynamic supply variations.
• Delivers ultralow power consumption with a maximum supply current of 16 μA.
• Features high power supply ripple rejection capability to maintain stability during input voltage fluctuations.
• Offers flexible design integration allowing users to tailor voltage, current, or transient response using external operational amplifiers.

Applications

• Data converter references in GSM, GPRS, and 3G mobile station applications
• Analog baseband ICs such as the AD6535 requiring rejection of battery voltage variations during RF power amplifier activity
• Portable battery-operated electronics and wireless devices
• Low voltage converter references

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status indicated by the Z suffix. Ensure proper handling due to ESD sensitivity. Validate package type matches the SOT-23 specification. Review datasheet for absolute maximum ratings to prevent damage during installation.

Selection Notes

Select this component when a fixed 1.2 V reference is required with minimal quiescent current. It is suitable for designs needing high PSRR to mitigate supply noise from dynamic loads. Consider external buffering if load currents exceed the internal drive capability. Verify that the operating temperature range meets system environmental requirements.

Part Context

This part belongs to the ADR280 series of ultralow power voltage references. It shares the same electrical specifications and pinout as other variants in the family but differs in packaging and reel configuration. The ARTZ suffix denotes the SOT-23 package and RoHS compliance. It serves as a foundational band gap core for various analog signal conditioning circuits.

Replacement Considerations

Direct substitutes include ADR280AKS-REEL7 and ADR280ART-REEL7. These parts share identical electrical characteristics and pin configurations. Verify package compatibility before substitution. Ensure thermal resistance values align with the application's heat dissipation needs.

FAQ

Can the ADR280ARTZ-REEL7 output voltage be adjusted?

No, the ADR280 provides a fixed 1.2 V band gap core output. To achieve different voltages, users must add external operational amplifiers to buffer or scale the output.

What is the minimum load capacitance required for stability?

The datasheet specifies a nominal load capacitance of 1 μF for optimum stability. Decoupling capacitors should be mounted close to the respective pins.

How does the ADR280 handle dynamic supply variations?

It features high power supply ripple rejection (–80 dB at 220 Hz), making it suitable for applications where the input voltage fluctuates significantly, such as during RF power amplifier activity in mobile stations.