VDD = 4.5 V to 5.5 V1, VIO = 2.3 V to 5.5 V or VDD + 0.3 V, whichever is the lowes" />
參數(shù)資料
型號: AD7942BRMZ
廠商: Analog Devices Inc
文件頁數(shù): 20/24頁
文件大?。?/td> 0K
描述: IC ADC 14BIT 250KSPS 10-MSOP
標準包裝: 50
系列: PulSAR®
位數(shù): 14
采樣率(每秒): 250k
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 1.25mW
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 10-TFSOP,10-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 10-MSOP
包裝: 管件
輸入數(shù)目和類型: 1 個偽差分,單極
產(chǎn)品目錄頁面: 780 (CN2011-ZH PDF)
配用: EVAL-AD7942CB-ND - BOARD EVALUATION FOR AD7942
AD7942
Rev. B | Page 5 of
24
TIMING SPECIFICATIONS
VDD = 4.5 V to 5.5 V1, VIO = 2.3 V to 5.5 V or VDD + 0.3 V, whichever is the lowest, unless otherwise stated, TA = 40°C to +85°C.
Table 3.
Parameter
Symbol
Min
Typ
Max
Unit
Conversion Time: CNV Rising Edge to Available Data
tCONV
0.5
2.2
μs
Acquisition Time
tACQ
1.8
μs
Time Between Conversions
tCYC
4
μs
CNV Pulse Width (CS Mode)
tCNVH
10
ns
SCK Period (CS Mode)
tSCK
15
ns
SCK Period (Chain Mode)
tSCK
VIO ≥ 4.5 V
17
ns
VIO ≥ 3 V
18
ns
VIO ≥ 2.7 V
19
ns
VIO ≥ 2.3 V
20
ns
SCK Low Time
tSCKL
7
ns
SCK High Time
tSCKH
7
ns
SCK Falling Edge to Data Remains Valid
tHSDO
5
ns
SCK Falling Edge to Data-Valid Delay
tDSDO
VIO ≥ 4.5 V
14
ns
VIO ≥ 3 V
15
ns
VIO ≥ 2.7 V
16
ns
VIO ≥ 2.3 V
17
ns
CNV or SDI Low to SDO D13 MSB Valid (CS Mode)
tEN
VIO ≥ 4.5 V
15
ns
VIO ≥ 2.7 V
18
ns
VIO ≥ 2.3 V
22
ns
CNV or SDI High or Last SCK Falling Edge to SDO High Impedance (CS Mode)
tDIS
25
ns
SDI Valid Setup Time from CNV Rising Edge (CS Mode)
tSSDICNV
15
ns
SDI Valid Hold Time from CNV Rising Edge (CS Mode)
tHSDICNV
0
ns
SCK Valid Setup Time from CNV Rising Edge (Chain Mode)
tSSCKCNV
5
ns
SCK Valid Hold Time from CNV Rising Edge (Chain Mode)
tHSCKCNV
5
ns
SDI Valid Setup Time from SCK Falling Edge (Chain Mode)
tSSDISCK
3
ns
SDI Valid Hold Time from SCK Falling Edge (Chain Mode)
tHSDISCK
4
ns
SDI High to SDO High (Chain Mode with Busy Indicator)
tDSDOSDI
VIO ≥ 4.5 V
15
ns
VIO ≥ 2.3 V
26
ns
1 See Figure 2 and Figure 3 for load conditions.
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