參數(shù)資料
型號: AD5749ACPZ
廠商: Analog Devices Inc
文件頁數(shù): 16/28頁
文件大?。?/td> 0K
描述: IC CURRENT OUT DVR 32-LFCSP
標(biāo)準(zhǔn)包裝: 1
放大器類型: 儀表
電路數(shù): 1
電流 - 電源: 5.2mA
電流 - 輸出 / 通道: 24mA
電壓 - 電源,單路/雙路(±): 10.8 V ~ 55 V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-VQ(5x5)
包裝: 托盤
Data Sheet
AD5749
Rev. B | Page 23 of 28
PACKET ERROR CHECKING
To verify that data has been received correctly in noisy
environments, the AD5749 offers the option of error checking
based on an 8-bit (CRC-8) cyclic redundancy check. The device
controlling the AD5749 should generate an 8-bit frame check
sequence using the following polynomial:
C(x) = x8 + x2 + x1 + 1
This is added to the end of the data-word, and 24 data bits are
sent to the AD5749 before taking SYNC high. If the AD5749
receives a 24-bit data frame, it performs the error check
when SYNC goes high. If the check is valid, then the data is
written to the selected register. If the error check fails, the
FAULT pin goes low and Bit D3 of the status register is set.
After reading this register, this error flag is cleared
automatically and the FAULT pin goes high again.
Figure 34. PEC Error Checking Timing
SCLK
SDIN
SYNC
UPDATE ON SYNC HIGH
D15
(MSB)
D0
(LSB)
16-BIT DATA
16-BIT DATA TRANSFER—NO ERROR CHECKING
SCLK
SDIN
SYNC
FAULT
UPDATE AFTER SYNC HIGH
ONLY IF ERROR CHECK PASSED
FAULT GOES LOW IF
ERROR CHECK FAILS
D23
(MSB)
D8
(LSB)
D7
D0
16-BIT DATA
8-BIT FCS
16-BIT DATA TRANSFER WITH ERROR CHECKING
08923-
035
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AD5749ACPZ-RL7 功能描述:IC CURRENT OUT DVR 32-LFCSP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源,單路/雙路(±):3 V ~ 16 V,±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC(0.154",3.90mm 寬) 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁面:865 (CN2011-ZH PDF) 其它名稱:296-1834296-1834-5
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