Description

The AD8055 (single) and AD8056 (dual) are voltage feedback amplifiers that offer bandwidth and slew rate typically found in current feedback amplifiers. These amplifiers are designed for instrumentation opamp applications, such as imaging, photodiode preamps, video line drivers, differential line drivers, professional cameras, video switchers, special effects, A-to-D drivers, and active filters. Despite being available at a very low cost, they provide excellent overall performance with a 300 MHz, -3 dB bandwidth (G=+1) and 1400 V/μs slew rate.

Specifications and 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

Application Scenarios

The AD8055 and AD8056 amplifiers are designed for various instrumentation opamp applications, including imaging, video line drivers, differential line drivers, photodiode preamps, professional cameras, video switchers, special effects, A-to-D drivers, and active filters.

Comparison

• Provides bandwidth and slew rate typically found in current feedback amplifiers
• Low cost and easy to use
• Excellent overall performance despite being available at a very low cost
• Small packaging
• High output drive current: over 60 mA

• No major disadvantages were found during our research.