ADA4800ACPZ-R7

The ADA4800 is a voltage buffer with an integrated active load. The buffer is a low power, high speed, low noise, high slew rate, fast settling, unity-gain amplifier designed for charge-coupled device (CCD) applications. In CCD applications, the active load current source can load the open-source CCD sensor output signal, and the buffer can drive the AFE load. In addition, the active current load can be disabled; in this mode, the ADA4800 functions solely as a unity-gain buffer. The buffer's quiescent power consumption is only 20 mW. The ADA4800 offers a power-down mode for power-conscious applications to further reduce total power consumption. The bandwidth of the ADA4800 buffer can also be adjusted over its full range via the IDRV pin. The ADA4800 buffer employs a push-pull output stage, providing drive current and maximum slew capability on both the rising and falling edges of signal transitions. At a quiescent current of 5 mA, the buffer delivers 400 MHz −3 dB bandwidth, making it suitable for both machine vision CCD sensors and digital cameras. The ADA4800 is ideal for driving 12-bit and 14-bit high-resolution AFE inputs. The versatility of the ADA4800 allows seamless interfacing with a wide variety of CCD sensors from different manufacturers. The ADA4800 is designed to operate from a 4 V to 17 V supply, available in a 1.6 mm × 1.6 mm × 0.55 mm, 6-lead LFCSP package, with a rated operating temperature range of −40°C to +85°C industrial temperature range.

Applications

• CCD image sensor output buffer
• Digital cameras
• Camcorders

Key features

• Built-in active load, unity-gain buffer
• Ultra-low buffer power consumption, chip power as low as 20 mW
• Power-saving feature: active load current reduction via GPO control
• High buffer speed — -3 dB bandwidth: 400 MHz, slew rate: 415 V/μs
• 7% fast settling time, 2 V step: 5 ns
• Adjustable buffer bandwidth
• Push-pull output stage
• Adjustable active load current
• Compact package: 1.6 mm × 1.6 mm × 0.55 mm