- 您現在的位置：買賣IC網 > PDF目錄10292 > AD7718BRUZ-REEL7 (Analog Devices Inc)IC ADC 24BIT R-R 8/10CH 28-TSSOP PDF資料下載
參數資料
| 型號： | AD7718BRUZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 27/44頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 24BIT R-R 8/10CH 28-TSSOP |
| 標準包裝： | 1 |
| 位數： | 24 |
| 采樣率（每秒）： | 1.37k |
| 數據接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉換器數目： | 1 |
| 功率耗散（最大）： | 3.84mW |
| 電壓電源： | 模擬和數字 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 28-TSSOP |
| 包裝： | 標準包裝 |
| 輸入數目和類型： | 5 個差分，單極；5 個差分，雙極；10 偽差分，單極；10 偽差分，雙極 |
| 配用： | EVAL-AD7718EBZ-ND - BOARD EVALUATION FOR AD7718 |
| 其它名稱： | AD7718BRUZ-REEL7DKR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁當前第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
REV. 0
AD7708/AD7718
–33–
1. Write to the ADCCON register to select the channel to be
calibrated, its input range, and operation in unipolar or
bipolar mode.
2. Write to the mode register selecting chop or nonchop mode
of operation, select the reference, buffered/unbuffered opera-
tion on the AINCOM, and select zero-scale offset calibration.
Zero-scale calibration can be either self-calibration, where
the ADC determines the zero point internal to the ADC, or a
system calibration where the user must supply the zero-scale
voltage to the input for the duration of the calibration.
3. The calibration is initiated following the write to the mode
register. The user then needs to determine when the calibra-
tion is complete. This can be performed in two ways, by
polling the
RDY pin or flag or by monitoring the MD2,
MD1, MD0 bits in the mode register. These bits are reset to
0, 0, 1 when the calibration is complete. The flowchart uses
polling of the mode bits in the mode register to determine
when the calibration is complete.
4. The next step is to perform the full-scale calibration. Full-scale
calibration can be a self-calibration or system calibration.
Using system calibration the user must supply the full-scale
signal to the analog inputs for the duration of the calibration.
Again the MD2, MD1, MD0 bits in the mode register are
monitored to determine when the calibration is complete.
Figure 18 shows a flowchart detailing the necessary program-
ming steps required to cycle through and read data results from
all channels in a multiplexed application. This flowchart assumes
that all channels have been previously calibrated. The following
are the general programming steps required when reading all
channels in a multiplexed application.
1. The AD7708/AD7718 is put into continuous conversion
mode. In this mode the part continually converts on the
specified channel and the
RDY line indicates when valid
data is available to be read from the data register.
2. The ADCCON register is written to select the channel
for conversion, its input range and operation is unipolar/
bipolar mode.
3. In this flowchart hardware polling of the
RDY line is per-
formed to determine when it is valid to read data from the
converter. When
RDY is low, valid data is available in the
data register. The
RDY line is set high on a channel change
and will not go low until a new valid data word is available.
Alternatively, the RDY bit in the status register can be polled
in software to determine when to read data from the converter.
4. When the data is read, increment the channel address pointer
to select the next channel, poll the
RDY pin, or RDY bit in
the status register, and again read the data. Continue until all
channels have been read.
POLL RDY PIN
WRITE TO ADCCON SELECTING CHANNEL N
AND ITS OPERATING RANGE
END
WRITE TO COMMUNICATIONS REGISTER SETTING UP
NEXT OPERATION TO BE A READ OF DATA REGISTER
AND THEN READ DATA RESULT
WRITE TO MODE REGISTER SELECTING
CONTINUOUS CONVERSION MODE
CYCLE THROUGH AND
READ ALL CHANNELS
RDY
LOW?
NO
YES
ALL
CHANNELS
READ
NO
YES
INCREMENT CHANNEL ADDRESS (N = N+1)
Figure 18. Multichannel Read Operation
相關PDF資料 |
PDF描述 |
|---|---|
| MS27466T17F35S | CONN RCPT 55POS WALL MNT W/SCKT |
| MS27499E12B22S | CONN RCPT 22POS BOX MNT W/SCKT |
| D38999/20MG75BN | CONN HSG RCPT 4POS WALL MT SCKT |
| AD7718BRZ-REEL | IC ADC 24BIT R-R 8/10CH 28SOIC |
| VI-BND-IW-B1 | CONVERTER MOD DC/DC 85V 100W |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7718BRZ | 功能描述:IC ADC 24BIT R-R 8/10CH 28SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD7718BRZ-REEL | 功能描述:IC ADC 24BIT R-R 8/10CH 28SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7718BRZ-REEL7 | 功能描述:IC ADC 24BIT R-R 8/10CH 28SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7718EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:8-/10-Channel, Low Voltage, Low Power, ADCs |
| AD7719 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Voltage, Low Power, Factory-Calibrated 16-/24-Bit Dual ADC |
發(fā)布緊急采購，3分鐘左右您將得到回復。