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.

技术特性

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

应用领域

CCD image sensor output buffer
Digital still cameras
Camcorders

功能框图

订购指南

产品型号	封装	引脚	温度范围	包装和数量	报价*(100-499)	报价*1000 pcs	RoHS
ADA4800ACPZ-R7 产品状态: 量产	6 ld LFCSP (1.6x1.6 w/.5x1.05ep)	6	工业	Reel, 3000	$ 0.56	$ 0.30	Y 材料信息
ADA4800ACPZ-RL 产品状态: 量产	6 ld LFCSP (1.6x1.6 w/.5x1.05ep)	6	工业	Reel, 10000	-	$ 0.30	Y 材料信息

应用技术支持与电子电路设计开发资源下载

ADA4800 英文数据手册DataSheet 下载 Rev A, 07/2010 (pdf 695kB). pdf
ADA4800 中文数据手册DataSheet 下载 Rev A, 07/2010 (pdf 1947kB). pdf
ADI 模拟器件公司比较器产品选型指南 . pdf
Analog Devices, Inc. 美国模拟器件公司产品订购手册 .pdf