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REF43:  +2.5V Low Power Precision Voltage Reference

Product Details

The REF43 is a low-power precision reference providing a stable +2.5V output independent of variations in supply voltage, load conditions or ambient temperature. It is suitable as a reference level for 8, 10 and 12-bit data acuisition systems, or wherever a stable, know voltage is required.

Tight output tolerances and low thermal drift are assured by zener-zap trimming of both outout voltage and its temperature coefficient. A unique curvature correction circuit reduces the thermal curvature which is characteristic of many previous bandgap references.


  • +2.5 Volt Output: ±0.05% Max
  • Low Temperature Coefficient: 10 ppm/°C Max
  • Excellent Regulation
    Load Regulation: 20 ppm/mA Max
    Line Regulation: 2 ppm/V Max
  • Supply Current: 450µA Max
  • Temperature Voltage Output: +1.9mV/°C
  • Operating Voltage Range: +4.5V to +40V
  • Extended Industrial Temp Range: -40°C to +85°C
  • Available in Die Form

Pin Configuration Diagram for REF43

Of Note ...

For additional information on our family of Precision Voltage References, please contact the Voltage Reference Design Group and include your name, company, mailing address, telephone/fax numbers, and email address as well as a brief description of your application.

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.

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Price, packaging, availability

REF43 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
REF43FZ Status: Production 8 ld CerDIP 8 Ind Tube, 48 $12.55 $10.66 N  Material Info PCN Purchase
REF43GPZ Status: Production 8 ld PDIP 8 Ind Tube, 50 $4.52 $3.84 Y  Material Info PCN Purchase
REF43GSZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $4.52 $3.84 Y  Material Info PCN Purchase
REF43GSZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $3.84 Y  Material Info PCN Purchase
REF43GSZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $3.84 Y  Material Info PCN Purchase
REF43NBC Status: Production CHIPS OR DIE 0 Tray, 221 - - Y  Material Info Notify Me Contact ADI
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.

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