AD7792/AD7793
目录
AD7792 / AD7793 -规格............................................. 3 .....
时序特性
,
.................................................................... 6
绝对最大额定值............................................... ............. 8
引脚配置和功能说明............................. 9
典型性能特征........................................... 11
片内寄存器.............................................. ............................. 12
通信寄存器( RS2 , RS1 , RS0 = 0 , 0 , 0 ) .............. 12
状态寄存器( RS2 , RS1 , RS0 = 0,0, 0;上电/复位=
0x80的( AD7792 ) /均为0x88 ( AD7793 ) ) ........................................ ... 13
模式寄存器( RS2 , RS1 , RS0 = 0,0, 1;上电/复位=
0x000A ) ................................................ ........................................ 13
配置寄存器( RS2 , RS1 , RS0 = 0,1, 0;电源 -
上电/复位= 0x0710 ) ............................................ ........................ 15
数据寄存器( RS2 , RS1 , RS0 = 0 ,1,1 ;上电/复位=
0x0000(00)) ................................................................................. 16
ID寄存器( RS2 , RS1 , RS0 = 1, 0,0 ;上电/复位= 0xXA
( AD7792 ) / 0xXB ( AD7793 ) ) ......................................... ............... 16
IO寄存器( RS2 , RS1 , RS0 = 1 , 0 , 1 ;上电/ RESET = 0×00 )
....................................................................................................... 16
偏移寄存器( RS2 , RS1 , RS0 = 1 , 1 , 0 ;上电/复位=
为0x8000 ( AD7792 ) /从0x800000 ( AD7793 ) ) ................................. 17
满量程寄存器( RS2 , RS1 , RS0 = 1 , 1 , 1 ,电源 -
初步的技术数据
上电/复位= 0x5xx5 ( AD7792 ) / 0x5xXXx5 ( AD7793 ) ) ............ 17
ADC电路信息............................................... ............... 19
概述................................................. .................................... 19
噪声性能................................................ ..................... 19
数字接口................................................ .......................... 20
单次转换模式............................................... ........ 21
连续转换模式............................................. 21
连续读取模式............................................... ......... 22
电路说明................................................ ......................... 23
模拟量输入通道............................................... ................ 23
双极性/单极性配置.............................................. 23
数据输出编码............................................... ................... 23
参考................................................. .................................... 23
V
DD
监控................................................. ............................... 24
接地和布局............................................... ............... 24
外形尺寸................................................ ....................... 26
ESD注意事项................................................ ................................ 26
修订历史
REV.PrF , 2004年6月:初始版本
REV.PrF 6/04 |第2页