AD7745/AD7746
目录
规格................................................. .................................... 3
时序规格................................................ ....................... 5
绝对最大额定值............................................... ............. 6
引脚配置和功能描述........................... 7
典型性能特征............................................. 8
输出噪声和分辨率规格.............................. 11
串行接口................................................ ................................ 12
读操作................................................ ........................... 12
写操作................................................ .......................... 12
AD7745 / AD7746复位.............................................. ............... 13
广播呼叫................................................ ................................. 13
注册说明................................................ ..................... 14
状态寄存器................................................ ............................. 15
盖数据寄存器............................................... ........................ 15
VT数据寄存器............................................... ......................... 15
盖建立注册............................................. ...................... 16
VT建立注册............................................. ....................... 16
EXC建立注册............................................. ..................... 17
配置寄存器................................................ .............. 18
盖DAC寄存器A .............................................. ..................... 19
盖DAC寄存器B .............................................. ..................... 19
盖失调校准寄存器.............................................. .. 19
帽增益校准寄存器.............................................. .... 19
电压增益校准寄存器.............................................. ... 19
电路说明................................................ ......................... 20
概述................................................. .................................... 20
电容数字转换器........................................... 20
激励源................................................ ........................ 20
CAPDAC ................................................. .................................... 21
单端输入电容............................................. .... 21
差动电容输入............................................... ..... 21
寄生电容对地.............................................. 22
寄生电阻接地.............................................. ... 22
寄生并联电阻............................................... ....... 22
寄生串联电阻............................................... .......... 23
电容增益校准............................................... ...... 23
电容式系统失调校准...................................... 23
内部温度传感器............................................... ..... 23
外部温度传感器............................................... .... 24
电压输入................................................ ............................... 24
V
DD
监控................................................. ............................... 24
典型应用图............................................... ..... 24
外形尺寸................................................ ....................... 25
订购指南................................................ .......................... 25
修订历史
4月5日 - 修订版0 :初始版
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