參數(shù)資料
型號: AD7859ASZ
廠商: Analog Devices Inc
文件頁數(shù): 2/28頁
文件大小: 0K
描述: IC ADC 12BIT 8CH LP 44-MQFP
標準包裝: 1
位數(shù): 12
采樣率(每秒): 200k
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 2
功率耗散(最大): 30mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-QFP
供應(yīng)商設(shè)備封裝: 44-MQFP(10x10)
包裝: 托盤
輸入數(shù)目和類型: 8 個單端,單極;8 個單端,雙極;4 個偽差分,單極;4 個偽差分,雙極
產(chǎn)品目錄頁面: 779 (CN2011-ZH PDF)
AD7859/AD7859L
REV. A
–10–
Table IV. Calibration Selection
CALMD
CALSLT1
CALSLT0
Calibration Type
00
0
A full internal calibration is initiated. First the internal DAC is calibrated, then the
internal gain error and finally the internal offset error are removed. This is the default setting.
0
1
First the internal gain error is removed, then the internal offset error is removed.
0
1
0
The internal offset error only is calibrated out.
0
1
The internal gain error only is calibrated out.
10
0
A full system calibration is initiated. First the internal DAC is calibrated, followed by the
system gain error calibration, and finally the system offset error calibration.
1
0
1
First the system gain error is calibrated out, followed by the system offset error.
1
0
The system offset error only is removed.
1
The system gain error only is removed.
Table IIIa. Channel Selection for AD7859/AD7859L
Differential Sampling (SGL/DIFF = 0)
AMODE
CHSLT
AIN(+)*AIN(–)*
Bipolar or
2
1
0
Unipolar
0
AIN1
AIN2
Unipolar
0
1
AIN3
AIN4
Unipolar
0
1
0
AIN5
AIN6
Unipolar
0
1
AIN7
AIN8
Unipolar
0
1
x
Not Used
1
0
AIN1
AIN2
Bipolar
1
0
1
AIN3
AIN4
Bipolar
1
0
1
0
AIN5
AIN6
Bipolar
1
0
1
AIN7
AIN8
Bipolar
1
x
Not Used
*AIN(+) refers to the positive input seen by the AD7859/AD7859L sample-and-
hold circuitry.
AIN(–) refers to the negative input seen by the AD7859/AD7859L sample-and-
hold circuitry.
Table IIIb. Channel Selection for AD7859/AD7859L
Single-Ended Sampling (SGL/DIFF = 1)
AMODE
CHSLT
AIN(+)*AIN(–)*
Bipolar or
2
1
0
Unipolar
0
AIN1
AGND
Unipolar
0
1
AIN3
AGND
Unipolar
0
1
0
AIN5
AGND
Unipolar
0
1
AIN7
AGND
Unipolar
0
1
0
AIN2
AGND
Unipolar
0
1
0
1
AIN4
AGND
Unipolar
0
1
0
AIN6
AGND
Unipolar
0
1
AIN8
AGND
Unipolar
1
0
AIN1
AIN8
Unipolar
1
0
1
AIN3
AIN8
Unipolar
1
0
1
0
AIN5
AIN8
Unipolar
1
0
1
AIN7
AIN8
Unipolar
1
0
AIN2
AIN8
Unipolar
1
0
1
AIN4
AIN8
Unipolar
1
0
AIN6
AIN8
Unipolar
1
AIN8
Unipolar
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