Low Cost, 300 MHz
Voltage Feedback Amplifiers
AD8055/AD8056 Imaging
Photodiode preamps
Video line drivers
Differential line drivers
Professional cameras
Video switchers
Special effects
A-to-D drivers
Active filters 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). 1 8 NC –IN 2 7 +VS +IN 3 6 VOUT –VS 4 5 NC NC = NO CONNECT 1 –VS 2 +IN 3 5 +VS 4 –IN AD8055 Figure 1. N-8 and R-8 Figure 2. RJ-5 OUT1 1 8 +VS –IN1 2 7 OUT +IN1 3 6 –IN2 –VS 4 5 +IN2 AD8056 01063-003 AD8055 VOUT 01063-002 NC Figure 3. N-8, R-8, and RM-8 Their 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 and AD8056 require only 5 mA typ/amplifier of …