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參數(shù)資料
| 型號： | AD7856AN |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 5 V Single Supply, 8-Channel 14-Bit 285 kSPS Sampling ADC |
| 中文描述： | 8-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁數(shù)： | 27/32頁 |
| 文件大?。?/td> | 294K |
| 代理商： | AD7856AN |
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AD7856
–27–
REV. A
Interface Mode 2 Configuration
Figure 35 shows the flowchart for configuring the part in Inter-
face Mode 2. In this case the read and write operations take
place simultaneously via the serial port. Writing all 0s ensures
APPLY
SYNC
(IF REQUIRED), SCLK, WRITE
TO CONTROL REGISTER SETTING NEXT
CHANNEL, CONVST BIT TO 1, READ
PREVIOUS CONVERSION RESULT ON
DOUT PIN (NOTE 1)
INITIATE
CONVERSION
IN
SOFTWARE
START
POWER-ON, APPLY CLKIN SIGNAL,
WAIT 150ms FOR AUTOMATIC CALIBRATION
PULSE
CONVST
PIN
WAIT FOR BUSY SIGNAL TO GO LOW
OR
WAIT FOR BUSY BIT = 0
NO
SERIAL
INTERFACE
MODE
NO
YES
YES
APPLY
SYNC
(IF REQUIRED), SCLK, READ
CURRENT CONVERSION RESULT ON
DOUT PIN, AND WRITE CHANNEL SELECTION
NOTE 1: WHEN USING THE SOFTWARE CONVERSION START AND TRANSFERRING DATA
DURING CONVERSION, THE USER MUST ENSURE THAT THE CONTROL REGISTER WRITE
OPERATION EXTENDS BEYOND THE FALLING EDGE OF BUSY. THE FALLING EDGE OF
BUSY RESETS THE CONVST BIT TO 0 AND ONLY AFTER THIS TIME CAN IT BE
REPROGRAMMED TO 1 TO START THE NEXT CONVERSION.
WAIT APPROX 200ns AFTER
CONVST
RISING EDGE
APPLY
SYNC
(IF REQUIRED), SCLK, READ
PREVIOUS CONVERSION RESULT ON DOUT
PIN, AND WRITE CHANNEL SELECTION
TRANSFER
DATA DURING
CONVERSION
NO
APPLY
SYNC
(IF REQUIRED), SCLK, WRITE
TO CONTROL REGISTER SETTING NEXT
CHANNEL, CONVST BIT TO 1, READ
RESULT ON DOUT PIN FOR
CONVERSION JUST COMPLETED
WAIT FOR BUSY SIGNAL TO GO LOW
OR
WAIT FOR BUSY BIT = 0
YES
2
TRANSFER
DATA DURING
CONVERSION
Figure 35. Flowchart for Setting Up, Reading and Writing in Interface Mode 2
that no valid data is written to any of the registers. When using
the software conversion start and transferring data during con-
version, Note 1 must be obeyed.
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| AD7856ANZ | 功能描述:IC ADC 14BIT 8CHAN 5V 24DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| AD7856AR | 功能描述:IC ADC 14BIT 8CH 5V 24-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7856AR-REEL | 功能描述:IC ADC 14BIT 8CH 5V 24-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7856AR-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 285ksps 14-bit Serial 24-Pin SOIC W T/R 制造商:Rochester Electronics LLC 功能描述:8 CH. 14-BIT 300 KSPS ADC I.C. - Tape and Reel |
| AD7856ARS | 制造商:Analog Devices 功能描述:ADC Single SAR 285ksps 14-bit Serial 24-Pin SSOP |
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