Add to Signal Chain Designer

ADR280:  1.2 V Ultralow Power High PSRR Voltage Reference

Product Details

Newer Alternatives:
  • ADR3412 with input voltages up to 5.5V maximum

The ADR280 is a 1.2 V band gap core reference with excellent line regulation and power supply rejection designed specifically for applications experiencing heavy dynamic supply variations, such as data converter references in GSM, GPRS, and 3G mobile station applications. Devices such as the AD6535 that have an analog baseband IC with on-board baseband, audio codecs, voltage regulators, and battery chargers rely on the ability of the ADR280 to reject input battery voltage variations during RF power amplifier activity.

In addition to mobile stations, the ADR280 is suitable for a variety of general-purpose applications. Most band gap refer-ences include internal gain for specific outputs, which simplifies the user’s design, but compromises on the cost, form factor, and flexibility. The ADR280, on the other hand, optimizes the band gap core voltage and allows users to tailor the voltage, current, or transient response by simply adding their preferred op amps.

The ADR280 operates on a wide supply voltage range from 2.4 V to 5.5 V. It is available in compact 3-lead SOT-23 and SC70 packages. The device is specified over the extended indus-trial temperature range of −40°C to +85°C.


  • List GSM, GPRS, 3G mobile stations
  • Portable battery-operated electronics
  • Low voltage converter references
  • Wireless devices


  • 1.2 V precision output
  • Excellent line regulation: 2 ppm/V typical
  • High power supply ripple rejection: –80 dB at 220 Hz
  • Ultralow power supply current: 16 μA maximum
  • Temperature coefficient: 40 ppm/°C maximum
  • Low noise, 12.5 nV/√Hz typical
  • Operating supply range, 2.4 V to 5.5 V
  • Compact 3-lead SOT-23 and SC70 packages

Pin Configuration Diagram for ADR280

Of Note ...

Essential companion part for AD6535 for handset applications. It also can be used as a general purpose part where low noise and low power reference is needed. Its tiny SC70 package makes it ideal for hand held devices applications.

Design Tools,Models,Drivers & Software

Title Content Type File Type
Voltage Reference Selection & Evaluation Wizard Design Calculators HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Engineered. Tested. Ready to Integrate.
Learn More

SampleSample & Buy

Price, packaging, availability

ADR280 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADR280AKSZ-R2 Status: Production 3 ld SC70 3 Ind Reel, 250 $1.27 $1.27 Y  Material Info Notify Me Purchase
ADR280AKSZ-REEL7 Status: Production 3 ld SC70 3 Ind Reel, 3000 - $0.82 Y  Material Info Notify Me Purchase
ADR280ARTZ-R2 Status: Production 3 ld SOT-23 3 Ind Reel, 250 $1.27 $1.27 Y  Material Info Notify Me Purchase
ADR280ARTZ-REEL7 Status: Production 3 ld SOT-23 3 Ind Reel, 3000 - $0.82 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

content here.
content here.

Review this Product