參數(shù)資料
型號: AD7156BCPZ-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 13/28頁
文件大?。?/td> 0K
描述: IC CDC 2CH 12BIT 1.8V 10LFCSP
標(biāo)準(zhǔn)包裝: 1
類型: 電容數(shù)字轉(zhuǎn)換器
分辨率(位): 12 b
采樣率(每秒): 100k
數(shù)據(jù)接口: 串行
電壓電源: 單電源
電源電壓: 1.8 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 10-WFDFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 10-LFCSP-WD(3x3)
包裝: 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁面: 781 (CN2011-ZH PDF)
其它名稱: AD7156BCPZ-REEL7DKR
AD7156
Rev. 0 | Page 20 of 28
CONFIGURATION REGISTER
Address Pointer 0x0F
8 Bits, Read/Write, Factory Preset 0x19
Table 12. Configuration Register Bit Map1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ThrFixed
ThrMD1
ThrMD0
EnCh1
EnCh2
MD2
MD1
MD0
(0)
(1)
(0)
(1)
1 The default values are given in parentheses.
Table 13.Configuration Register Bit Descriptions
Bit
Mnemonic
Description
7
ThrFixed
ThrFixed = 1 sets the fixed threshold mode; the outputs reflect the comparison of data and a fixed (constant)
value of the threshold registers.
ThrFixed = 0 sets the adaptive threshold mode; the outputs reflect the comparison of data to the adaptive
thresholds. The adaptive threshold is set dynamically, based on the history of the previous data.
6
5
ThrMD1
ThrMD0
These bits set the output comparators mode
ThrMD1
ThrMD0
Threshold Mode
Output Active When
Adaptive Threshold Mode
Fixed Threshold Mode
0
Negative
Data < average – sensitivity
Data < threshold
0
1
Positive
Data > average + sensitivity
Data > threshold
1
0
In-window
Data > average – sensitivity
and
Data < average + sensitivity
1
Out-window
Data < average – sensitivity
or
Data > average + sensitivity
4
EnCh1
Enables conversion on Channel 1
3
EnCh2
Enables conversion on Channel 2
2
1
0
MD2
MD1
MD0
Converter mode of operation setup
MD2
MD1
MD0
Mode
Description
0
Idle
The part is fully powered up, but performing no conversion.
0
1
Continuous
Conversion
The part is repeatedly performing conversions on the
enabled channel(s); if two channels are enabled, the part is
sequentially switching between them.
0
1
0
Single conversion
The part performs a single conversion on the enabled
channel; if two channels are enabled, the part performs two
conversions, one on each channel. After finishing the
conversion(s), the part goes to the idle mode.
0
1
Power-down
The part powers down the on-chip circuits, except the
digital interface.
1
X
Reserved
Do not use these modes.
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