參數(shù)資料
型號(hào): AD7745ARUZ
廠商: ANALOG DEVICES INC
元件分類: 溫度/濕度傳感器
英文描述: 24-Bit Capacitance-to-Digital Converter with Temperature Sensor
中文描述: DIGITAL TEMP SENSOR-SERIAL, 24BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT
封裝: LEAD FREE, MO-153-AB, TSSOP-16
文件頁(yè)數(shù): 18/28頁(yè)
文件大?。?/td> 391K
代理商: AD7745ARUZ
AD7745/AD7746
CONFIGURATION REGISTER
Address Pointer 0x0A, Default Value 0xA0
Converter update rate and mode of operation setup.
Table 17. Configuration Register Bit Map
Bit
Mnemonic
Default
Rev. 0 | Page 18 of 28
Bit 7
VTF1
0
Bit 6
VTF0
0
Bit 5
CAPF2
0
Bit 4
CAPF1
0
Bit 3
CAPF0
0
Bit 2
MD2
0
Bit 1
MD1
0
Bit 0
MD0
0
Table 18.
Bit
7
6
Mnemonic
VTF1
VTF0
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.
VTF1
VTF0
Conversion Time (ms)
0
0
20.1
0
1
32.1
1
0
62.1
1
1
122.1
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.
CAPF2
CAPF1
CAPF0
Conversion Time (ms)
0
0
0
11.0
0
0
1
11.9
0
1
0
20.0
0
1
1
38.0
1
0
0
62.0
1
0
1
77.0
1
1
0
92.0
1
1
1
109.6
Converter mode of operation setup.
MD2
MD1
MD0
Mode
0
0
0
Idle
0
0
1
Continuous conversion
0
1
0
Single conversion
0
1
1
Power-Down
1
0
0
-
1
0
1
Capacitance system offset calibration
1
1
0
Capacitance or voltage system gain calibration
1
1
1
VTCHOP = 1
Update Rate (Hz)
49.8
31.2
16.1
8.2
–3 dB Frequency (Hz)
26.4
15.9
8.0
4.0
CAP CHOP = 0
Update Rate
90.9
83.8
50.0
26.3
16.1
13.0
10.9
9.1
–3 dB Frequency (Hz)
87.2
79.0
43.6
21.8
13.1
10.5
8.9
8.0
5
4
3
CAPF2
CAPF1
CAPF0
2
1
0
MD2
MD1
MD0
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