ADR280AKSZ-REEL7

Overview

The ADR280AKSZ-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 is specified over an industrial temperature range of −40°C to +85°C. The device delivers excellent line regulation with a typical value of 2 ppm/V and high power supply ripple rejection of –80 dB at 220 Hz. It consumes a maximum supply current of 16 μA and exhibits low output noise density of 12.5 nV/√Hz. This component is housed in a compact 3-lead SC70 package.

Feature Summary

• Provides a stable 1.2 V band gap core reference optimized for applications experiencing heavy dynamic supply variations.
• Features ultralow power consumption with a maximum supply current of 16 μA.
• Delivers high power supply ripple rejection of –80 dB at 220 Hz for superior noise immunity.
• Offers excellent line regulation with a typical performance of 2 ppm/V.

Applications

• GSM, GPRS, and 3G mobile station data converter references
• Portable battery-operated electronics
• Low voltage converter references
• Wireless devices

Procurement Notes

Verify the specific ordering suffix 'KS' confirms the SC70 package configuration required for your design. Ensure compatibility with the -40°C to +85°C operating temperature range. Confirm RoHS compliance status if mandated by your manufacturing standards. Cross-reference the datasheet specifications against your system's power supply and load requirements before finalizing procurement.

Selection Notes

Select this component when a precise 1.2 V reference is needed with minimal power draw. It is suitable for designs requiring high PSRR to reject input battery voltage fluctuations during RF activity. Consider external buffering if higher drive currents or specific voltage scaling beyond the core 1.2 V are required. Verify that the SC70 package dimensions fit your PCB layout constraints.

Part Context

The ADR280 series consists of 1.2 V band gap core voltage references designed for flexibility and low power. Unlike many references with fixed internal gain, this core allows users to tailor voltage, current, or transient response using external operational amplifiers. It is widely used in mobile communications and portable electronics where space and power efficiency are critical.

Replacement Considerations

ADR280ARTZ-REEL7 (SOT-23 package)

FAQ

Can the ADR280AKSZ-REEL7 be used as a standalone buffered output?

No, the ADR280 provides only the 1.2 V band gap core and can drive a maximum load of 100 μA. External operational amplifiers are required to buffer the output for high current or sink/source current applications.

What is the purpose of the decoupling capacitors recommended for this device?

A 0.1 μF ceramic capacitor should be placed at the output for optimum stability, and another 0.1 μF capacitor should be included at the IC supply pin. These must be mounted close to their respective pins.