GENERAL DESCRIPTION

The AD8055 (single) and AD8056 (dual) voltage feedback amplifiers offer bandwidth and slew rate typically found in current feedback amplifiers. Additionally, these amplifiers are easy to use and available at a very low cost.

Despite their low cost, the AD8055 and AD8056 provide excellent overall performance. For video applications, their differential gain and phase error are 0.01% and 0.02° into a 150 Ω load and 0.02% and 0.1° while driving four video loads (37.50 Ω).

FEATURES

  Low cost single (AD8055) and dual (AD8056)

  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 errors: 5 mV max VOS, 1.2 μA max IB

  Small packaging

     AD8055 available in 5-lead SOT-23

     AD8056 available in 8-lead MSOP

  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

  High output drive current: over 60 mA

APPLICATIONS

  Imaging

  Photodiode preamps

  Video line drivers

  Differential line drivers

  Professional cameras

  Video switchers

  Special effects

  A-to-D drivers

  Active filters