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OP279:  Rail-to-Rail High Output Current Operational Amplifier

Product Details


The OP279 is a dual rail-to-rail, high output current, single supply amplifier. It is designed for low voltage applications that require either current or capacitive load drive capability. The OP279 can sink and source currents of ±80 mA (typ) and is stable with capacitive loads to 10 nF.

Applications with the benefit from the OP279's high output current include driving headphones, displays, transformers, and power transistors. The powerful output is combined with a unique input stage that maintains very low distortion with wide common-mode range, even in single supply designs.

The OP279 can be used as a buffer to provide much greater drive capability than can usually be provided by CMOS outputs. CMOS ASICs and DACs often have outputs that can swing to both the positive supply and ground, but are incapable of driving greater than a few milliamps.

Bandwith is typically 5 MHz and the slew rate is 3 V/µs, making these amplifiers well suited for single supply applications that require audio bandwidths when used in high gain configurations. Operation is guaranteed from voltages as low as 4.5 V, up to 12 V.

When using the OP279 in +5 volt systems, very good audio performance can be attained. THD is below 0.01% with a 600 Ohm load, and noise is a respectable 21 nV/Hz. Supply current is less than 3.5 mA per amplifier.

The OP279 is available in 8-pin plastic DIP and SO-8 surface mount packages. They are specified over the industrial (-40°C to +80°C) temperature range.

FEATURES and BENEFITS

  • Rail-to-Rail Inputs and Outputs
  • High Output Current: ±60 mA
  • Single Supply: 5 V to 12 V
  • Wide Bandwidth: 5 MHz
  • High Slew Rate: 3 V/±s
  • Low Distortion: 0.01%
  • Unity-Gain Stable
  • No Phase Reversal
  • Short-Circuit Protected
  • Drives Capacitive Loads: 10 nF

Pin Configuration Diagram for OP279

Documentation

Title Content Type File Type
OP179/OP279: Rail-to-Rail High Output Current Operational Amplifiers Data Sheet  (Rev G, 01/2002) (pdf, 254 kB) Data Sheets PDF
AN-649: Using the Analog Devices Active Filter Design Tool  (pdf, 5301 kB) Application Notes PDF
AN-358: Noise and Operational Amplifier Circuits  (pdf, 593 kB) Application Notes PDF
Ask The Applications Engineer-25
Op Amps Driving Capacitive Loads

(Analog Dialogue, Vol. 31, No. 2, 1997)
Analog Dialogue HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
OP279 SPICE Macro-Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

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.

SampleSample & Buy

Price, packaging, availability

OP279 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
OP279GRUZ-REEL Status: Production 8 ld TSSOP 8 Ind Reel, 2500 - $1.36 Y  Material Info PCN Purchase
OP279GS Status: Last Time Buy 8 ld SOIC 8 Ind Tube, 98 $1.70 $1.53 N  Material Info PDN Purchase
OP279GS-REEL Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 2500 - $1.53 N  Material Info PDN Purchase
OP279GS-REEL7 Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 1000 - $1.53 N  Material Info PDN Purchase
OP279GSZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $1.50 $1.36 Y  Material Info Notify Me Purchase
OP279GSZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $1.36 Y  Material Info Notify Me Purchase
OP279GSZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $1.36 Y  Material Info Notify Me 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.

EVAL-OPAMP-2 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-PRAOPAMP-2CPZ Status: Production Dual CP-8 lead LFCSP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-2RMZ Status: Production Dual RM-8 lead MSOP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-2RZ Status: Production Dual R-8 lead SOIC Evaluation Board $20.19 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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