參數(shù)資料
型號(hào): AD7691BRMZ-RL7
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: 18-Bit, 1.5 LSB INL, 250 kSPS PulSAR Differential ADC in MSOP/QFN
中文描述: 1-CH 18-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10
封裝: LEAD FREE, MO-187BA, MSOP-10
文件頁數(shù): 6/28頁
文件大小: 682K
代理商: AD7691BRMZ-RL7
AD7691
VDD = 2.3 V to 4.5 V, VIO = 2.3 V to VDD, V
REF
= VDD, all specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 5.
1
Parameter
Conversion Time: CNV Rising Edge to Data Available
Acquisition Time
Time Between Conversions
CNV Pulse Width (CS Mode)
SCK Period (CS Mode)
SCK Period (Chain Mode)
VIO Above 3 V
VIO Above 2.7 V
VIO Above 2.3 V
SCK Low Time
SCK High Time
SCK Falling Edge to Data Remains Valid
SCK Falling Edge to Data Valid Delay
VIO Above 3 V
VIO Above 2.7 V
VIO Above 2.3 V
CNV or SDI Low to SDO D17 MSB Valid (CS Mode)
VIO Above 2.7 V
VIO Above 2.3 V
CNV or SDI High or Last SCK Falling Edge to SDO High Impedance (CS Mode)
SDI Valid Setup Time from CNV Rising Edge (CS Mode)
SDI Valid Hold Time from CNV Rising Edge (CS Mode)
SCK Valid Setup Time from CNV Rising Edge (Chain Mode)
SCK Valid Hold Time from CNV Rising Edge (Chain Mode)
SDI Valid Setup Time from SCK Falling Edge (Chain Mode)
SDI Valid Hold Time from SCK Falling Edge (Chain Mode)
SDI High to SDO High (Chain Mode with Busy Indicator)
1
See Figure 3 and Figure 4 for load conditions.
Rev. 0 | Page 6 of 28
Symbol
t
CONV
t
ACQ
t
CYC
t
CNVH
t
SCK
t
SCK
t
SCKL
t
SCKH
t
HSDO
t
DSDO
t
EN
t
DIS
t
SSDICNV
t
HSDICNV
t
SSCKCNV
t
HSCKCNV
t
SSDISCK
t
HSDISCK
t
DSDOSDI
Min
0.5
1.8
5.5
10
25
29
35
40
12
12
5
30
0
5
8
8
10
Typ
Max
3.7
24
30
35
18
22
25
36
Unit
μs
ns
μs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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