4 修订历史记录

Changes from * Revision (September 2010) to A Revision

• Added 器件信息 表、ESD 额定值 表、建议运行条件 表、开关特性 表、功能方框图 部分特性 说明 部分、器件功能模式 部分、编程 部分、应用和实施 部分、电源建议 部分、布局 部分、器件和文档支持 部分以及机械、封装和可订购信息 部分Go
• Changed 更改了文档标题Go
• Changed 将整个文档中的 QFN 更改为 WQFNGo
• Added 高分辨率、高吞吐量： “特性” 项目中的子项目Go
• Changed 将温度范围 特性 项目符号从额定温度范围 更改为工作温度范围Go
• Changed 更改了说明 部分的内容（为了清晰起见）并将具有固有采样保持 (S/H) 输入级的 ADC 更改为 ADCGo
• Changed 更改了第 1 页的图片并添加了标题Go
• Changed title of Family and Ordering Information to Device Comparison TableGo
• Changed thermal symbols for R_θJA, R_θJC(top), R_θJB, and R_θJC(bot)Go
• Deleted Full-scale input span, Absolute input range, External Reference, AVDD, and DVDD parameters and Temperature Range section from Electrical Characteristics: ADS7947 (12-Bit) tableGo
• Deleted Full-scale input span, Absolute input range, External Reference, AVDD, and DVDD parameters and Temperature Range section from Electrical Characteristics: ADS7948 (10-Bit) table Go
• Deleted Full-scale input span, Absolute input range, External Reference, AVDD, and DVDD parameters and Temperature Range section from Electrical Characteristics: ADS7949 (8-Bit) table Go
• Changed Timing Requirements table: added section titles, moved switching parameters into Switching Characteristics table Go
• Changed symbol for Pulse duration, SCLK low parameter from t_W1 to t_WLGo
• Added symbol to SCLK frequency parameterGo
• Changed title of PCB Layout/Schematic Guidelines to Layout and changed format of sectionGo
• Changed Recommended ADC Schematic figureGo