VDD = 2.3 V to 4.5 V, VIO = 1.8 V to VDD, all specifications TM" />
參數(shù)資料
型號: EVAL-AD7682EDZ
廠商: Analog Devices Inc
文件頁數(shù): 31/32頁
文件大?。?/td> 0K
描述: BOARD EVAL AD7682
標(biāo)準(zhǔn)包裝: 1
系列: PulSAR®
ADC 的數(shù)量: 1
位數(shù): 16
采樣率(每秒): 250k
數(shù)據(jù)接口: 串行
輸入范圍: ±VREF
在以下條件下的電源(標(biāo)準(zhǔn)): 12.5mW @ 250kSPS,5V
工作溫度: -40°C ~ 85°C
已用 IC / 零件: AD7682
已供物品:
AD7682/AD7689
Data Sheet
Rev. D | Page 8 of 32
VDD = 2.3 V to 4.5 V, VIO = 1.8 V to VDD, all specifications TMIN to TMAX, unless otherwise noted.
Table 5.
Parameter1
Symbol
Min
Typ
Max
Unit
Conversion Time: CNV Rising Edge to Data Available
tCONV
3.2
μs
Acquisition Time
tACQ
1.8
μs
Time Between Conversions
tCYC
5
μs
Data Write/Read During Conversion
tDATA
1.2
μs
CNV Pulse Width
tCNVH
10
ns
SCK Period
tSCK
tDSDO + 2
ns
SCK Low Time
tSCKL
12
ns
SCK High Time
tSCKH
12
ns
SCK Falling Edge to Data Remains Valid
tHSDO
5
ns
SCK Falling Edge to Data Valid Delay
tDSDO
VIO Above 3 V
24
ns
VIO Above 2.7 V
30
ns
VIO Above 2.3 V
38
ns
VIO Above 1.8 V
48
ns
CNV Low to SDO D15 MSB Valid
tEN
VIO Above 3 V
21
ns
VIO Above 2.7 V
27
ns
VIO Above 2.3 V
35
ns
VIO Above 1.8 V
45
ns
CNV High or Last SCK Falling Edge to SDO High Impedance
tDIS
50
ns
CNV Low to SCK Rising Edge
tCLSCK
10
ns
DIN Valid Setup Time from SCK Rising Edge
tSDIN
5
ns
DIN Valid Hold Time from SCK Rising Edge
tHDIN
5
ns
1 See
for load conditions.
IOL
500A
IOH
1.4V
TOSDO
CL
50pF
07
35
3-
0
02
Figure 2. Load Circuit for Digital Interface Timing
30% VIO
70% VIO
2V OR VIO – 0.5V1
0.8V OR 0.5V2
2V OR VIO – 0.5V1
tDELAY
1 2V IF VIO ABOVE 2.5V, VIO – 0.5V IF VIO BELOW 2.5V.
2 0.8V IF VIO ABOVE 2.5V, 0.5V IF VIO BELOW 2.5V.
07
35
3-
0
03
Figure 3. Voltage Levels for Timing
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