ADA4800 Low Power, High Speed CCD Buffer Amplifier

The ADA4800 is a voltage buffer amplifier integrated with an active load. The buffer is a low power, high speed, low noise, high slew rate, fast settling, fixed gain of 1 monolithic amplifier for charge-coupled device (CCD) applications. For CCD applications, the active load current source (IAL) can load the open source CCD sensor outputs and the buffer can drive the AFE load. The active current load can also be switched off, to use the ADA4800 as just a unity gain buffer. The buffer consumes only 20 mW of static power. In applications where power savings is critical, the ADA4800 features a power save mode (see the Power Save Mode section), which further reduces the total current consumption. The bandwidth of the ADA4800 buffer is also fully adjustable through the IDRV pin.

The buffer of the ADA4800 employs a push-pull output stage architecture, providing drive current and maximum slew capability for both rising and falling signal transitions. At a 5 mA quiescent current setting, it provides 400 MHz, −3 dB bandwidth, which makes this buffer well suited for CCD sensors from machine vision to digital still camera applications.

The ADA4800 is ideal for driving the input of the Analog Devices, Inc., 12-bit and 14-bit high resolution analog front ends (AFE) such as the AD9928, AD9990, AD9920A, AD9923A, and AD997x family.

The versatility of the ADA4800 allows for seamless interfacing with many CCD sensors from various manufacturers.

The ADA4800 is designed to operate at supply voltages as low as 4 V and up to 17 V. It is available in a 1.6 mm × 1.6 mm × 0.55 mm, 6-lead LFCSP package and is rated to operate over the industrial temperature range of −40°C to +85°C.

Applications
  • CCD image sensor output buffer
  • Digital still cameras
  • Camcorders
Features and Benefits
  • Integrated active load and gain of
    1 buffer
  • Very low buffer power consumption
    As low as 20 mW on chip
  • Power save feature to reduce active load current by GPO control
  • Fast settling time to 1%, 2 V step:
    5 ns
  • High buffer speed
    400 MHz, −3 dB bandwidth
    415 V/μs slew rate
  • Adjustable buffer bandwidth
  • Push-pull output stage
  • Adjustable active load current
  • Small package: 1.6 mm × 1.6 mm × 0.55 mm
  • Audio & Video Products
    Security and Surveillance
    • Video Surveillance
    • Access Control
    • Scanning Equipment
    Data Sheets
    Documentnote
    ADA4800: Low-Power High Speed CCD Buffer Amplifier Preliminary Data Sheet (Rev. A)PDF 695 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADA4800ACPZ-R7 Production6 ld LFCSP (1.6x1.6 w/.5x1.05ep)REEL 3000-40 to 85C0.560.3Y
    ADA4800ACPZ-RL Production6 ld LFCSP (1.6x1.6 w/.5x1.05ep)REEL 10000-40 to 85C00Y
    ADA4800: Low-Power High Speed CCD Buffer Amplifier Preliminary Data Sheet (Rev. A) ada4800
    ADA4800:低功耗、高速CCD缓冲放大器 数据手册 (Rev. A) ada4800