ADA4891-3 Low Cost CMOS, High Speed, Rail-to-Rail Amplifier (Triple)

In spite of their low cost, the ADA4891 family provides high performance and versatility. The rail-to-rail output stage enables the output to swing within 50 mV of each rail, enabling maximum dynamic range. The ADA4891 family of amplifiers is ideal for imaging applications, such as consumer video, CCD buffers, and contact image sensor buffers. Low distortion and fast settling time also make them ideal for active filter applications. The ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 are available in a wide variety of packages. The ADA4891-1 is available in 8-lead SOIC and 5-lead SOT-23 packages. The ADA4891-2 is available in 8-lead SOIC and 8-lead MSOP packages. The ADA4891-3 and ADA4891-4 are available in 14-lead SOIC and 14-lead TSSOP packages. The amplifiers are specified to operate over the extended temperature range of −40°C to +125°C. Applications Imaging Consumer video Active filters Coaxial cable drivers Clock buffers Photodiode preamp Contact image sensor and buffers

The ADA4891-1 (single), ADA4891-2 (dual), ADA4891-3 (triple), and ADA4891-4 (quad) are CMOS, high speed amplifiers that offer high performance at a low cost. The amplifiers feature true single-supply capability, with an input voltage range that extends 300 mV below the negative rail.

In spite of their low cost, the ADA4891 family provides high performance and versatility. The rail-to-rail output stage enables the output to swing within 50 mV of each rail, enabling maximum dynamic range.

The ADA4891 family of amplifiers is ideal for imaging applications, such as consumer video, CCD buffers, and contact image sensor buffers. Low distortion and fast settling time also make them ideal for active filter applications.

The ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 are available in a wide variety of packages.

The ADA4891-1 is available in 8-lead SOIC and 5-lead SOT-23 packages.

The ADA4891-2 is available in 8-lead SOIC and 8-lead MSOP packages.

The ADA4891-3 and ADA4891-4 are available in 14-lead SOIC and 14-lead TSSOP packages.

The amplifiers are specified to operate over the extended temperature range of −40°C to +125°C.

Features and Benefits
  • High speed and fast settling
    −3 dB bandwidth: 220 MHz (G = +1)
    Slew rate: 170 V/μs
    Settling time to 0.1%: 28 ns
  • Video specifications (G = +2, RL = 150 Ω)
    0.1 dB gain flatness: 25 MHz
    Differential gain error: 0.05%
    Differential phase error: 0.25°
  • Single-supply operation
    Wide supply range: 2.7 V to 5.5 V
    Output swings to within 50 mV of supply rails
  • Low distortion: 79 dBc SFDR at 1 MHz
  • Linear output current: 125 mA at −40 dBc
  • Low power:
    4.4 mA per amplifier
  • Amplifiers
    SPICE Models
    Data Sheets
    Documentnote
    ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4: Low Cost CMOS, High Speed, Rail-to-Rail Amplifiers Data Sheet (Rev. F)PDF 646 kB
    User Guides
    Documentnote
    UG-114: Universal Evaluation Board for Triple, High Speed Op Amps Offered in 14-Lead SOIC PackagesPDF 148 kB
    UG-026: Evaluation Board User GuidePDF 265 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADA4891-3ARUZ Production14 ld TSSOPOTH 96-40 to 125C1.050.89Y
    ADA4891-3ARUZ-R7 Production14 ld TSSOPREEL 1000-40 to 125C00.89Y
    ADA4891-3ARUZ-RL Production14 ld TSSOPREEL 2500-40 to 125C00.89Y
    ADA4891-3ARZ Production14 ld SOICOTH 56-40 to 125C1.050.89Y
    ADA4891-3ARZ-R7 Production14 ld SOICREEL 1000-40 to 125C00.89Y
    ADA4891-3ARZ-RL Production14 ld SOICREEL 2500-40 to 125C00.89Y
    ADA4891-3WARUZ-R7 Production14 ld TSSOPREEL 1000-40 to 85C01.05Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    ADA4891-3AR-EBZ14-Lead Bare Evaluation Board18.25Y
    ADA4891-3ARU-EBZ14-Lead TSSOP Bare Evaluation Board18.25Y
    Reference Materials
    ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4: Low Cost CMOS, High Speed, Rail-to-Rail Amplifiers Data Sheet (Rev. F) ada4891-1
    ADA4891-1_ADA4891-2_ADA4891-3_ADA4891-4:低成本CMOS、高速、轨到轨放大器 (Rev. E) ada4891-1
    ADA4891 SPICE Macro Model ada4891-1
    UG-026:评估板用户指南 ada4853-3
    UG-114:14引脚SOIC封装的三通道高速运算放大器通用评估板 ada4862-3
    UG-114: Universal Evaluation Board for Triple, High Speed Op Amps Offered in 14-Lead SOIC Packages ada4862-3
    UG-026: Evaluation Board User Guide ada4853-3
    SAR ADC & Driver Quick-Match Guide ad7476