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| 型號(hào)： | EVAL-AD7746EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVALUATION FOR AD7746 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 傳感器類型： | 觸摸，電容式 |
| 接口： | I²C |
| 電源電壓： | 2.7 V ~ 5.25 V |
| 嵌入式： | 否 |
| 已供物品： | 板，纜線，CD |
| 已用 IC / 零件： | AD7746 |
| 產(chǎn)品目錄頁面： | 781 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | AD7746ARUZ-ND - IC CONV 2CH CAP TO DGTL 16-TSSOP AD7746ARUZ-REEL7-ND - IC CONV 2CH CAP TO DGTL 16-TSSOP AD7746ARUZ-REEL-ND - IC CONV 2CH CAP TO DGTL 16-TSSOP |
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AD7745/AD7746
Rev. 0 | Page 18 of 28
CONFIGURATION REGISTER
Address Pointer 0x0A, Default Value 0xA0
Converter update rate and mode of operation setup.
Table 17. Configuration Register Bit Map
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
VTF1
VTF0
CAPF2
CAPF1
CAPF0
MD2
MD1
MD0
Default
0
Table 18.
Bit
Mnemonic
Description
Voltage/temperature channel digital filter setup—conversion time/update rate setup.
The conversion times in this table are valid for the CLKCTRL = 0 in the EXC SETUP register. The conversion
times are longer by a factor of two for the CLKCTRL = 1.
VTCHOP = 1
VTF1
VTF0
Conversion Time (ms)
Update Rate (Hz)
–3 dB Frequency (Hz)
0
20.1
49.8
26.4
0
1
32.1
31.2
15.9
1
0
62.1
16.1
8.0
7
6
VTF1
VTF0
1
122.1
8.2
4.0
Capacitive channel digital filter setup—conversion time/update rate setup.
The conversion times in this table are valid for the CLKCTRL = 0 in the EXC SETUP register.
The conversion times are longer by factor of two for the CLKCTRL = 1.
CAP CHOP = 0
CAPF2
CAPF1
CAPF0
Conversion Time (ms)
Update Rate
–3 dB Frequency (Hz)
0
11.0
90.9
87.2
0
1
11.9
83.8
79.0
0
1
0
20.0
50.0
43.6
0
1
38.0
26.3
21.8
1
0
62.0
16.1
13.1
1
0
1
77.0
13.0
10.5
1
0
92.0
10.9
8.9
5
4
3
CAPF2
CAPF1
CAPF0
1
109.6
9.1
8.0
Converter mode of operation setup.
MD2
MD1
MD0
Mode
0
Idle
0
1
Continuous conversion
0
1
0
Single conversion
0
1
Power-Down
1
0
-
1
0
1
Capacitance system offset calibration
1
0
Capacitance or voltage system gain calibration
2
1
0
MD2
MD1
MD0
1
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