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AD8055:  Low Cost, Single, 300 MHz Voltage Feedback Amplifier

Product Details

The AD8055 (single) voltage feedback amplifier offers bandwidth and slew rate typically found in current feedback amplifiers. Additionally, this amplifier is easy to use and available at a very low cost.

Despite its low cost, the AD8055 provides excellent overall performance. For video applications, its differential gain and phase error is 0.01% and 0.02° into a        150 W load, and 0.02% and 0.1° while driving four video loads (37.50 W).

Its 0.1 dB flatness out to 40 MHz, wide bandwidth out to 300 MHz, along with 1400 V/µs slew rate and 20 ns settling time, make them useful for a variety of high-speed applications.

The AD8055 requires only 5 mA typ/amplifier of supply current and operates on a dual ±5 V or single +12 V power supply, while capable of delivering over 60 mA of load current. The AD8055 is available in a small 8-lead PDIP, 8-lead SOIC, and 5-lead SOT-23 packages. These features make the AD8055 ideal for portable and battery powered applications where size and power are critical. This amplifier in the R-8, N-8 and RM-8 packages are available in the extended temperature range of -40°C to +125°C.

AD8055 (Single) PDIP-8, SOIC-8 and SOT-23-5

AD8056 (Dual) PDIP-8, SOIC-8 and MSOP-8


  • Low cost
  • Easy to use voltage feedback architecture
  • High speed
    300 MHz, -3 dB bandwidth (G = +1)
    1400 V/µs slew rate
    20 ns settling to 0.1%
    Low distortion: -72 dBc @ 10 MHz
    Low noise: 6 nV/√Hz
    Low dc rrrors: 5mV max VOS, 1.2 µA max IB
  • Small packaging
  • High output drive current: over 60 mA
  • Excellent video specifications
    (RL = 150 Ω, G = +2)
    Gain flatness 0.1 dB to 40 MHz
    0.01% differential gain error
    0.02° differential phase error
  • Drives 4 video loads (37.5 V) with 0.02% differential gain and 0.1° differential phase
  • Low power, ±5 V supplies 5 mA typ/amplifier power supply current

Pin Configuration Diagram for AD8055


Title Content Type File Type
AD8055/AD8056: Low Cost, 300 MHz Voltage Feedback Amplifiers Data Sheet  (Rev J, 02/2006) (pdf, 296 kB) Data Sheets PDF
AN-649: Using the Analog Devices Active Filter Design Tool  (pdf, 5301 kB) Application Notes PDF
AN-581: Biasing and Decoupling Op Amps in Single Supply Applications  (pdf, 166 kB) Application Notes PDF
AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps  (pdf, 55 kB)
So far most clamping amplifiers have relied upon an output clamping architecture and are called output clamp amps (OCAs). A new architecture called an input clamp amp (ICA) offers superior clamping accuracy and lower distortion.
Application Notes PDF
AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems  (pdf, 228 kB)
Movement towards lower power supply voltages is driven by the demand that systems consume less and less power coupled with the desire to reduce the number of power supply voltages in the system. The following applications are discussed: Single-Ended and Differential Input ADC Input Circuits, Video Line Driver, Active Filter, HDSL Transceiver, and Transformer Drive Circuits.
Application Notes PDF
MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps  (pdf, 62 kB) Tutorials PDF
MT-059: Compensating for the Effects of Input Capacitance on VFB and CFB Op Amps Used in Current-to-Voltage Converters  (pdf, 69 kB) Tutorials PDF
MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps  (pdf, 66 kB) Tutorials PDF
MT-056: High Speed Voltage Feedback Op Amps  (pdf, 109 kB) Tutorials PDF
MT-053: Op Amp Distortion: HD, THD, THD + N, IMD, SFDR, MTPR  (pdf, 104 kB) Tutorials PDF
MT-052: Op Amp Noise Figure: Don't Be Misled  (pdf, 60 kB) Tutorials PDF
MT-050: Op Amp Total Output Noise Calculations for Second-Order System  (pdf, 38 kB) Tutorials PDF
MT-049: Op Amp Total Output Noise Calculations for Single-Pole System  (pdf, 40 kB) Tutorials PDF
MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth  (pdf, 81 kB) Tutorials PDF
MT-047: Op Amp Noise  (pdf, 72 kB) Tutorials PDF
MT-033: Voltage Feedback Op Amp Gain and Bandwidth  (pdf, 251 kB) Tutorials PDF
MT-032: Ideal Voltage Feedback (VFB) Op Amp  (pdf, 65 kB) Tutorials PDF
A Stress-Free Method for Choosing High-Speed Op Amps
A decision-tree approach to making the critical decision about high-speed op amp selection, including a look at some helpful tools.
Webcasts WEBCAST
UG-127: Universal Evaluation Board for High Speed Op Amps in SOT-23-5/SOT-23-6 Packages  (pdf, 273 kB) User Guides PDF
UG-101: Evaluation Board User Guide  (pdf, 189 kB) User Guides PDF
High Speed Amplifiers Selection Table  (pdf, 77 kB) Product Selection Guide PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
dBm/dBu/dBv Calculator
This calculator converts between standard units of power measurement and signal strength.
Utilities and Conversions HTML
Power Dissipation vs Die Temp
This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.
Utilities and Conversions HTML
This tool will help with the selection, evaluation and troubleshooting of voltage feedback Op-Amps. It uses typical data to model the behavior of a selected amplifier. It allows a user to select an amplifier, configure a circuit, apply a signal and evaluate the performance. It is useful for checking an amplifier's spec's such as Bandwidth, Slew Rate, Input/Output Range, Gain Error, Load Current, Stability Issues and DC Errors in a given circuit.
ADIsim Design/Simulation Tools HTML
OpAmp Stability
An applet for demonstrating stability effects in opamp buffers.
Design Calculators HTML
AD8055 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

AD8055 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD8055ANZ Status: Production 8 ld PDIP 8 Ind Tube, 50 $1.01 $0.86 Y  Material Info PCN Purchase Sample
AD8055AR Status: Last Time Buy 8 ld SOIC 8 Ind Tube, 98 $1.17 $1.00 N  Material Info PCN/PDN Purchase
AD8055ART-R2 Status: Last Time Buy 5 ld SOT-23 5 Ind Reel, 250 $1.62 $1.62 N  Material Info PDN Purchase
AD8055ART-REEL7 Status: Production 5 ld SOT-23 5 Ind Reel, 3000 - $1.00 N  Material Info PCN Purchase
AD8055ARTZ-R2 Status: Production 5 ld SOT-23 5 Ind Reel, 250 $1.39 $1.39 Y  Material Info PCN Purchase
AD8055ARTZ-REEL7 Status: Production 5 ld SOT-23 5 Ind Reel, 3000 - $0.86 Y  Material Info PCN Purchase Sample
AD8055ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $1.01 $0.86 Y  Material Info PCN Purchase Sample
AD8055ARZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $0.86 Y  Material Info PCN Purchase
AD8055ARZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 $1.01 $0.86 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.

AD8055 Evaluation Boards
Model Description Price RoHS View PCN/ PDN Check Inventory/
AD8055ART-EBZ Status: Production 5-Lead SOT-23 Bare Evaluation Board $18.25 Yes -
AD8055ARTZ-REEL7 Status: Production 5-Lead SOT-23 - Yes -
AD8055AR-EBZ Status: Production 8-Lead SOIC Bare Evaluation Board $18.25 Yes -
AD8055ARZ Status: Production 8-Lead SOIC $1.42 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.

Check Inventory & Purchase

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