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AD7982 датащи(PDF) 5 Page - Analog Devices

номер детали AD7982
подробное описание детали  16-Bit, 1 MSPS PulSAR ADC in MSOP QFN
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
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AD7982 датащи(HTML) 5 Page - Analog Devices

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AD7980-EP
Rev. 0 | Page 5 of 12
TIMING SPECIFICATIONS
−55°C to +125°C, VDD = 2.37 V to 2.63 V, VIO = 3.3 V to 5.5 V, unless otherwise stated. See Figure 2 and Figure 3 for load conditions.
Table 4.
Parameter
Symbol
Min
Typ
Max
Unit
Conversion Time: CNV Rising Edge to Data Available
t
CONV
500
710
ns
Acquisition Time
t
ACQ
290
ns
Time Between Conversions
t
CYC
1000
ns
CNV Pulse Width (CS
t
CNVH
Mode)
10
ns
SCK Period (CS
t
SCK
Mode)
ns
VIO Above 4.5 V
10.5
ns
VIO Above 3 V
12
ns
VIO Above 2.7 V
13
ns
VIO Above 2.3 V
15
ns
SCK Period (Chain Mode)
t
SCK
ns
VIO Above 4.5 V
11.5
ns
VIO Above 3 V
13
ns
VIO Above 2.7 V
14
ns
VIO Above 2.3 V
16
ns
SCK Low Time
t
SCKL
4.5
ns
SCK High Time
t
SCKH
4.5
ns
SCK Falling Edge to Data Remains Valid
t
HSDO
3
ns
SCK Falling Edge to Data Valid Delay
t
DSDO
VIO Above 4.5 V
9.5
ns
VIO Above 3 V
11
ns
VIO Above 2.7 V
12
ns
VIO Above 2.3 V
14
ns
CNV or SDI Low to SDO D15 MSB Valid (CS
t
EN
Mode)
VIO Above 3 V
10
ns
VIO Above 2.3 V
15
ns
CNV or SDI High or Last SCK Falling Edge to SDO High Impedance (CS
t
DIS
Mode)
20
ns
SDI Valid Setup Time from CNV Rising Edge
t
SSDICNV
5
ns
SDI Valid Hold Time from CNV Rising Edge (CS
t
HSDICNV
Mode)
2
ns
SDI Valid Hold Time from CNV Rising Edge (Chain Mode)
t
HSDICNV
0
ns
SCK Valid Setup Time from CNV Rising Edge (Chain Mode)
t
SSCKCNV
5
ns
SCK Valid Hold Time from CNV Rising Edge (Chain Mode)
t
HSCKCNV
5
ns
SDI Valid Setup Time from SCK Falling Edge (Chain Mode)
t
SSDISCK
2
ns
SDI Valid Hold Time from SCK Falling Edge (Chain Mode)
t
HSDISCK
3
ns
SDI High to SDO High (Chain Mode with Busy Indicator)
t
DSDOSDI
15
ns
500µA
IOL
500µA
IOH
1.4V
TO SDO
CL
20pF
Figure 2. Load Circuit for Digital Interface Timing
X% VIO1
Y% VIO1
VIH2
VIL2
VIL2
VIH2
tDELAY
tDELAY
1FOR VIO
≤ 3.0V, X = 90 AND Y = 10; FOR VIO > 3.0V X = 70, AND Y = 30.
2MINIMUM VIH AND MAXIMUM VIL USED. SEE DIGITAL INPUTS
SPECIFICATIONS IN TABLE 3.
Figure 3. Voltage Levels for Timing


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