Intersil 公司的ISL55112是双路高速CCD阵列驱动器,包括两个大电流的水平列驱动器和两个低电流辅助驱动器,信号摆幅高达8V,可采用单极和双极电源,3V逻辑接口,时钟频率高达30MHz,主要用在数码相机,HD数码摄像机,工业视频系统,医疗图像,HD安全系统以及家庭安全系统.本文介绍ISL55112主要特性, 功能方框图以及标准测试配置图, 评估板ISL55112EVAL1Z电路图和材料清单(BOM).
ISL55112: High-Speed Dual Precision CCD Driver
The ISL55112 is a high-speed CCD array driver comprising 2 Horizontal drivers with high current output drive and 2 ancillary signal drivers with lower current output drive.
The devices can be used in pairs to drive and control two halves of a high pixel count CCD array as used in high end Digital Cameras or Camcorders. The device has a largely symmetric pinout about a center axis to facilitate the placement of the devices on either side of a large CCD array with minimal signal routing disruption.
The ISL55112 can accommodate split asymmetric voltage supplies up to 8V total for each of the 4 drivers and has significant flexibility in the selection of these supply voltages within this range. All 4 drivers have their own High and Low level supply lines to minimize
interference between drivers caused by shared current paths.
Special circuitry for the high current drivers is included to ensure the highest degree of stability of the driver output resistance over varying supply voltage, temperature and
semiconductor process variations, resulting in highly consistent, predictable waveform crossover points.
The ISL55112 can drive high capacitance loads at pixel clock rates exceeding 30MHz with low propagation delays, and skews between channels of better than ±500ps.
The ISL55112 is available in 24 Ld exposed pad TQFN package and is specified for operation over the full -40℃ to +85℃ temperature range.
• 2 Horizontal Row Drivers (High Current)
• 2 Ancillary Drivers (Lower Current)
• Up to 8V Signal Swing
• Unipolar and Bipolar Supply Capability
• Adjustable Output Impedance for EMI Control
• 3V Logic Interface
• Low Propagation Delays
• Low Skew: ±500ps
• High Clock Rates: 30MHz+
• Stand-by and Power-Down Modes
• Digital Still Cameras
• High Definition Digital Camcorders
• Industrial Vision Systems
• Medical Imaging
• Semiconductor Wafer and Mask Inspection Equipment
• High Definition Security Systems
• Home Security Systems