參數(shù)資料
型號(hào)： AD7856ARS
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, PDSO24
封裝： SHRINK, SOP-24
文件頁(yè)數(shù)： 27/32頁(yè)
文件大小： 294K
代理商： AD7856ARS
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.
相關(guān)PDF資料
PDF描述
AD7856KR 5 V Single Supply, 8-Channel 14-Bit 285 kSPS Sampling ADC
AD7856 8-Channel 14 Bit 285 kSPS Sampling ADC(單電源,8通道14位采樣A/D轉(zhuǎn)換器)
AD7858L 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC(單電源,200kSPS 8通道12位采樣A/D轉(zhuǎn)換器)
AD7858 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC(單電源,200kSPS 8通道12位采樣A/D轉(zhuǎn)換器)
AD7859AP 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADCs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7856ARS-REEL 制造商:Analog Devices 功能描述:ADC Single SAR 285ksps 14-bit Serial 24-Pin SSOP T/R
AD7856ARS-REEL7 制造商:Analog Devices 功能描述:ADC Single SAR 285ksps 14-bit Serial 24-Pin SSOP T/R
AD7856ARSZ 功能描述:IC ADC 14BIT 8CHAN 5V 24SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)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(zhuǎn)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(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個(gè)單端，單極；2 個(gè)差分，單極 產(chǎn)品目錄頁(yè)面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD7856ARSZ-REEL7 功能描述:IC ADC 14BIT 8CHAN 5V 24SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)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(zhuǎn)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(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極
AD7856ARZ 功能描述:IC ADC 14BIT 8CHAN 5V 24SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)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(zhuǎn)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(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個(gè)單端，單極；2 個(gè)差分，單極 產(chǎn)品目錄頁(yè)面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
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