AD8047 250 MHz, General Purpose Voltage Feedback Op Amps Gain 1 Stable

The AD8047 and AD8048 are very high speed and wide bandwidth amplifiers. The AD8047 is unity gain stable. The AD8048 is stable at gains of two or greater. The AD8047 and AD8048, which utilize a voltage feedback architecture, meet the requirements of many applications that previously depended on current feedback amplifiers.

A proprietary circuit has produced an amplifier that combines many of the best characteristics of both current feedback and voltage feedback amplifiers. For the power (6.6 mA max) the AD8047 and AD8048 exhibit fast and accurate pulse response (30 ns to 0.01%) as well as extremely wide small signal and large signal bandwidth and low distortion. The AD8047 achieves -54 dBc distortion at 20 MHz and 250 MHz small signal and 130 MHz large signal bandwidths.

The AD8047 and AD8048's low distortion and cap load drive make the AD8047/AD8048 ideal for buffering high speed ADCs. They are suitable for 12 bit/10 MSPS or 8 bit/60 MSPS ADCs. Additionally, the balanced high impedance inputs of the voltage feedback architecture allow maximum flexibility when designing active filters.

The AD8047 and AD8048 are offered in industrial (-40°C to +85°C) temperature ranges and are available in 8-lead PDIP and SOIC packages.

An evaluation board is available for this product and may be ordered using the following product number: AD8047-EB and AD8048-EB. Schematic and layout for this evaluation board is contained in the product data sheet.

AD8047 (Gain 1 Stable) PDIP and SOIC

AD8048 (Gain 2 Stable) PDIP and SOIC

Features and Benefits
  • Wide Bandwidth, G = +1
    Small Signal: 250 MHz
    Large Signal (2 V p-p): 130 MHz
  • 5.8 mA Typical Supply Current
  • Low Distortion, (SFDR) Low Noise
    -66 dBc Typ @ 5 MHz
    -54 dBc Typ @ 20 MHz
  • 5.2 nV/vHz Noise
  • Drives 50 pF Capacitive Load
  • High Speed
    Slew Rate 750 V/µs
    Settling 30 ns to 0.01%, 2 V Step
    ±3 V to ±6 V Supply Operation
  • Amplifiers
    Audio & Video Products
    SPICE Models
    Data Sheets
    Documentnote
    AD8047/AD8048: 250 MHz, General Purpose Voltage Feedback Op Amps Data Sheet (Rev. A)PDF 288 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-214: Ground Rules for High Speed CircuitsPDF 356 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-755: 8-Lead SOIC Amplifier Evaluation Board User GuidePDF 276 K
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD8047ANZ Production8 ld PDIPOTH 50-40 to 85C3.993.62Y
    AD8047ARZ Production8 ld SOICOTH 98-40 to 85C2.792.53Y
    AD8047ARZ-REEL7 Production8 ld SOICREEL 1000-40 to 85C2.792.53Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-HSOPAMP-1CPZEvaluation Board for 8-LD LFCSP18.25Y
    EVAL-HSOPAMP-1KSZEvaluation Bare Board for 5 and 6-lead SC70 Package18.25Y
    EVAL-HSOPAMP-1RJZEvaluation Bare Board for SOT-23 Package18.25Y
    EVAL-HSOPAMP-1RZEvaluation Bare Board for 8-lead SOIC Package18.25Y
    EVAL-HSOPAMP-E-1RZEvaluation Bare Board for 8 Lead SOIC dedicated feedback with epad connection18.25Y
    EVAL-HSOPAMP-N-1RZEvaluation Bare Board for 8 Lead SOIC w/Null or Compensation functionality on Pins 1 and or 818.25Y
    Reference Materials
    AD8047/AD8048: 250 MHz, General Purpose Voltage Feedback Op Amps Data Sheet (Rev. A) ad8047
    AD8047 SPICE Macro-Model ad8047
    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-214: Ground Rules for High Speed Circuits ad1674
    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-649: Using the Analog Devices Active Filter Design Tool (Rev. 0) ad8350
    UG-755: 8-Lead SOIC Amplifier Evaluation Board User Guide ad9631
    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