低成本， 300 MHz电压反馈放大器 Low Cost, 300 MHz Voltage Feedback Amplifiers
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