AD8056 Low Cost, Dual, 300 MHz Voltage Feedback Amplifier

The AD8056 (dual) 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 AD8056 provides excellent overall performance. For video applications, its differential gain and phase error is 0.01% and 0.02° into a 150 Ω load, and 0.02% and 0.1° while driving four video loads (37.50 Ω).

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 AD8056 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 AD8056 is available in a small 8-lead PDIP, 8-lead SOIC, and 8-lead MSOP packages. These features make the AD8056 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

Features and Benefits
  • 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
    • Amplifiers
    Audio & Video Products
    SPICE Models
    Data Sheets
    Documentnote
    AD8055/AD8056: Low Cost, 300 MHz Voltage Feedback Amplifiers Data Sheet (Rev. J)PDF 296 kB
    Application Notes
    Documentnote
    AN-402: Replacing Output Clamping Op Amps with Input Clamping AmpsPDF 55 kB
    AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (Rev. 0)PDF 166 kB
    AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed SystemsPDF 228 kB
    AN-649: Using the Analog Devices Active Filter Design Tool (Rev. 0)PDF 5.3 M
    User Guides
    Documentnote
    UG-886: Universal Evaluation Board for Dual High Speed Op Amps Offered in 8-Lead MSOPPDF 155.96 K
    UG-128: Universal Evaluation Board for Dual High Speed Op Amps in SOIC PackagesPDF 208 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD8056ANZ Production8 ld PDIPOTH 50-40 to 125C2.091.78Y
    AD8056AR Production8 ld SOICOTH 98-40 to 125C2.191.87N
    AD8056AR-REEL Production8 ld SOICREEL 2500-40 to 125C01.87N
    AD8056AR-REEL7 Production8 ld SOICREEL 750-40 to 125C2.191.87N
    AD8056ARM-REEL7 Production8 ld MSOPREEL 1000-40 to 125C2.191.87N
    AD8056ARMZ Production8 ld MSOPOTH 50-40 to 125C1.91.62Y
    AD8056ARMZ-REEL Production8 ld MSOPREEL 3000-40 to 125C01.62Y
    AD8056ARMZ-REEL7 Production8 ld MSOPREEL 1000-40 to 125C1.91.62Y
    AD8056ARZ Production8 ld SOICOTH 98-40 to 125C1.91.62Y
    AD8056ARZ-REEL Production8 ld SOICREEL 2500-40 to 125C01.62Y
    AD8056ARZ-REEL7 Production8 ld SOICREEL 1000-40 to 125C1.91.62Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-HSAMP-2CPZ-10Evaluation Bare Board for 10-Lead LFCSP18.25Y
    EVAL-HSAMP-2CPZ-8Evaluation Bare Board for 8-Lead LFCSP18.25Y
    EVAL-HSAMP-2RMZ-10Evaluation Bare Board for 10-lead MSOP Package18.25Y
    EVAL-HSAMP-2RMZ-8Evaluation Bare Board for 8 Lead MSOP18.25Y
    EVAL-HSAMP-2RZ-8Evaluation Bare Board for 8 Lead SOIC18.25Y
    Reference Materials
    AD8055/AD8056: Low Cost, 300 MHz Voltage Feedback Amplifiers Data Sheet (Rev. J) ad8055
    AD8056 SPICE Macro-Model ad8056
    AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps ad829
    AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (Rev. 0) ad829
    AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems ad829
    AN-402: 以输入箝位放大器取代输出箝位运算放大器 (Rev. 0) ad829
    AN-417: 在低压高速系统中利用快速轨到轨运算放大器减少设计限制 (Rev. 0) ad829
    AN-581: 单电源应用中的偏置和去耦运算放大器 (Rev. 0) ad829
    AN-751: 带裸露焊盘的高速通用运算放大器评估板 (Rev. B) ad8056
    AN-649: Using the Analog Devices Active Filter Design Tool (Rev. 0) ad8350
    UG-886: Universal Evaluation Board for Dual High Speed Op Amps Offered in 8-Lead MSOP ad8072
    UG-128：SOIC封装的双通道高速运算放大器通用评估板 ad8042
    UG-128: Universal Evaluation Board for Dual High Speed Op Amps in SOIC Packages ad8042
    MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps ad829
    MT-032：理想的电压反馈型(VFB)运算放大器 ad829
    MT-059: 补偿输入电容对电流电压转换器所用电压反馈和电流反馈型运算放大器的影响 ad9631
    MT-058: 反馈电容对VFB和CFB运算放大器的影响 ad829
    MT-056: 高速电压反馈运算放大器 ad829
    MT-053:运算放大器失真：HD、THD、THD + N、IMD、SFDR、MTPR ad829
    MT-052：运算放大器噪声指数：不要被误导 ad829
    MT-050: 二阶系统的运算放大器总输出噪声计算 ad9631
    MT-049：单极点系统的运算放大器总输出噪声计算 ad829
    MT-048：运算放大器噪声关系：1/f噪声、均方根(RMS)噪声与等效噪声带宽 ad829
    MT-047：运算放大器噪声 ad829
    MT-033：电压反馈型运算放大器的增益和带宽 ad829
    MT-032: Ideal Voltage Feedback (VFB) Op Amp ad829
    High Speed Amplifiers Selection Table ad8138
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