AD8655 Low Noise, Precision CMOS Amplifier

The AD8655/AD8656 are the industry’s lowest noise, precision CMOS amplifiers. They leverage the Analog Devices DigiTrim® technology to achieve high dc accuracy.

The AD8655/AD8656 provide low noise (2.7 nV/√Hz at 10 kHz), low THD + N (0.0007%), and high precision performance (250 μV max over VCM) to low voltage applications. The ability to swing rail-to-rail at the input and output enables designers to buffer analog-to-digital converters (ADCs) and other wide dynamic range devices in single-supply systems.

The high precision performance of the AD8655/AD8656 improves the resolution and dynamic range in low voltage applications. Audio applications, such as microphone pre-amps and audio mixing consoles, benefit from the low noise, low distortion, and high output current capability of the AD8655/AD8656 to reduce system level noise performance and maintain audio fidelity. The high precision and rail-to-rail input and output of the AD8655/ AD8656 benefit data acquisition, process controls, and PLL filter applications.

The AD8655/AD8656 are fully specified over the −40°C to +125°C temperature range. The AD8655/AD8656 are available in Pb-free, 8-lead MSOP and SOIC packages. The AD8655/ AD8656 are both available for automotive applications.

Applications
  • ADC and DAC buffers
  • Audio
  • Industrial controls
  • Precision Filters
  • Digital Scales
  • Automotive collision avoidance
  • PLL filters
Features and Benefits
  • Low Noise: 2.7 nV/√rHz @ f = 10 kHz
  • Low offset voltage: 250 μV max over Vcm
  • Low Distortion: 0.0008%
  • Offset voltage drift: 0.4 μV/°C typ and 2.3 μV/°C max
  • Bandwidth: 28 MHz
  • Rail-to-rail Input/Output
  • Unity Gain Stable
  • 2.7 V to 5.5 V Operation
  • −40°C to +125°C Operation
  • Qualified for automotive applications
  • Amplifiers
    Security and Surveillance
    • Scanning Equipment
    SPICE Models
    Data Sheets
    Documentnote
    AD8655/AD8656: Low Noise, Precision CMOS Amplifier Data Sheet (Rev. E)PDF 323 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD8655ARMZ Production8 ld MSOPOTH 50-40 to 125C0.890.71Y
    AD8655ARMZ-REEL Production8 ld MSOPREEL 3000-40 to 125C00.71Y
    AD8655ARZ Production8 ld SOICOTH 98-40 to 125C0.890.71Y
    AD8655ARZ-REEL Production8 ld SOICREEL 2500-40 to 125C00.71Y
    AD8655ARZ-REEL7 Production8 ld SOICREEL 1000-40 to 125C00.71Y
    AD8655WARMZ-RL Production8 ld MSOPREEL 3000-40 to 125C00.95Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-PRAOPAMP-1KSZSingle KS-5 lead SC70 Evaluation Board20.19Y
    EVAL-PRAOPAMP-1RJZSingle RJ-5 lead SOT23 Evaluation Board20.19Y
    EVAL-PRAOPAMP-1RMZSingle RM-8 lead MSOP Evaluation Board20.19Y
    EVAL-PRAOPAMP-1RZSingle R-8 lead SOIC Evaluation Board20.19Y
    Reference Materials
    AD8655/AD8656: Low Noise, Precision CMOS Amplifier Data Sheet (Rev. E) ad8655
    AD8655/AD8656:低噪声、精密CMOS放大器数据手册 (Rev. B) ad8655
    AD8655 SPICE Macro Model ad8655
    SAR ADC & Driver Quick-Match Guide ad7476
    Demystifying Auto-Zero Amplifiers Part 1 ad8551
    CN-0139 adr127
    MS-2066:传感器电路的低噪声信号调理 ad8628