參數(shù)資料
型號: AD7747ARUZ-REEL
廠商: Analog Devices Inc
文件頁數(shù): 9/28頁
文件大?。?/td> 0K
描述: IC CONV CAP TO DIG 24BIT 16TSSOP
標準包裝: 2,500
類型: 電容數(shù)字轉(zhuǎn)換器
分辨率(位): 24 b
數(shù)據(jù)接口: 串行
電壓電源: 單電源
電源電壓: 2.7 V ~ 5.25 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 16-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 16-TSSOP
包裝: 帶卷 (TR)
配用: EVAL-AD7747EBZ-ND - BOARD EVAL FOR AD7747
AD7747
Rev. 0 | Page 17 of 28
EXC SETUP REGISTER
Address Pointer 0x09, Default Value 0x03
Capacitive channel excitation setup.
Table 15. EXC Setup Bit Map
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
EXCDAC
EXCEN
EXCLVL1
EXCLVL0
Default
0
1
Table 16.
Bit
Mnemonic
Description
7 to 4
These bits must be 0 for proper operation.
3
EXCDAC
CAPDAC excitation. This bit must be set to 1 for the proper capacitive channel operation.
2
EXCEN
CIN and AC SHLD excitation. This bit must be set to 1 for the proper capacitive channel operation.
Excitation Voltage Level. Must be set to ±VDD × 3/8 to allow operation for specified performance.
EXCLVL1
EXCLVL0
Voltage on Cap
EXC Low Level
EXC High Level
0
±VDD/8
VDD × 3/8
VDD × 5/8
0
1
±VDD/4
VDD × 1/4
VDD × 3/4
1
0
±VDD × 3/8
VDD × 1/8
VDD × 7/8
1
0
EXCLVL1,
EXCLVL0
1
±VDD/2
0
VDD
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