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參數(shù)資料
| 型號： | AD7746 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 24BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | MO-153AB, TSSOP-16 |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 232K |
| 代理商： | AD7746 |
AD7745/AD7746
Preliminary Technical Data
Rev. PrF | Page 12 of 17
CAP SETUP REGISTER
Address pointer 0x07, default value 0x00
Capacitive channel setup.
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
CAPEN
CIN2
DIFF
-
CAPCHOP
Default
0
Bit
Mnemonic
Description
7
CAPEN
CAPEN = 1 enables capacitive channel for single conversion, continuous conversion or calibration.
6
CIN2
CIN2 = 1 switches the internal multiplexer to the second capacitive input on the AD7746.
5
DIFF
DIFF = 1 sets differential mode on the selected capacitive input.
4-1
-
These bits must be 0 for proper operation.
0
CAPCHOP
CAPCHOP = 1 enables chopping on the capacitive channel.
VT SETUP REGISTER
Address pointer 0x08, default value 0x00
Voltage / Temperature channel setup.
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
VTEN
VTMD1
VTMD0
EXTREF
-
VTSHORT
VTCHOP
Default
0
Bit
Mnemonic
Description
7
VTEN
VTEN = 1 enables voltage / temperature channel for single conversion, continuous conversion or calibration.
6
5
VTMD1
VTMD0
Voltage / temperature channel input configuration:
VTMD1 VTMD0 Channel Input
0
Internal Temperature Sensor
0
1
External Temperature Sensor Diode
1
0
VDD Monitor
1
External Voltage Input (VIN)
4
EXTREF
EXTREF = 1 selects an external reference voltage connected to REFIN(+), REFIN(–) for the voltage input or the
VDD Monitor.
EXTREF = 0 selects the on-chip internal reference. The internal reference must be used with the internal tem-
perature sensor for proper operation.
3-2
-
These bits must be 0 for proper operation.
1
VTSHORT
VTSHORT = 1 internally shorts the voltage / temperature channel input for test purposes.
0
VTCHOP = 1
VTCHOP = 1 sets internal chopping on the voltage / temperature channel.
The VTCHOP bit must be set to 1 for the specified voltage / temperature channel performance.
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| AD7746ARUZ | 功能描述:IC CONV 2CH CAP TO DGTL 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 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:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
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