參數(shù)資料
型號: AD7714(中文)
廠商: Analog Devices, Inc.
英文描述: Signal Conditioning ADC(信號調(diào)節(jié)A/D轉(zhuǎn)換器)
中文描述: 信號調(diào)理模數(shù)轉(zhuǎn)換器(信號調(diào)節(jié)的A / D轉(zhuǎn)換器)
文件頁數(shù): 14/46頁
文件大?。?/td> 869K
代理商: AD7714(中文)
==99-10-14==
P&S
ooá|′μ×ó1é· YóDT1
==46-14==
P &S
oo á|′μ×ó1é· YóDT1
μ :
ot±±ooêD×μèa· 15o
D :
ooêD70020D
óê±à:
430079
μ°:
( 86) ( 027£87493500 87493506
( 86) ( 027) 87491166, 87493497
P &S
í í :
http://www.p8s.com
Limit at T
, T
MAX
(A, Y Versions)
400
Parameter
f
CLKIN3, 4
Units
kHz min
Conditions/Comments
Master Clock Frequency: Crystal/Resonator or Externally
Supplied
For Specified Performance
Master Clock Input Low Time. tCLK N= 1/fCLK N
Master Clock Input High Time
DRDY High Time
SYNC Pulsewidth
RESET Pulsewidth
2.5
0.4 t
CLK IN
0.4 t
CLK IN
500 t
CLK IN
100
100
MHz max
ns min
ns min
ns nom
ns min
ns min
t
CLK IN LO
t
CLK IN HI
t
DRDY
t
1
t
Read Operation
t
3
t
4
t
56
0
0
0
80
100
100
100
0
10
60
100
100
ns min
ns min
ns min
ns max
ns max
ns min
ns min
ns min
ns min
ns max
ns max
ns max
DRDY to CS Setup Time
CS Falling Edge to SCLK Active Edge Setup Time5
SCLK Active Edge to Data Valid Delay5
DVDD= +5 V
DVDD= +3 V
SCLK High Pulsewidth
SCLK Low Pulsewidth
Bus Relinquish Time after SCLK Active Edge5
DVDD = +5 V
DVDD = +3 V
SCLK Active Edge to DRDY High5, 8
t
6
t
7
t
8
t
97
t
Write Operation
t
11
t
12
t
13
t
14
t
15
t
16
×¢êí£o
1.
aáè· ±£òD£ù ú
+25
è2aê £ùóDêèDo1¨
t
r
=t
f
=5ns
£¨
DV
DD
μ
10%
á
90%
ò′ó
1.6V
μ1μê± £
2.
í
6
7
£¨ê±2êyêêóóúùóDààDí £
3. CLKIN
±è· §a
45%
á
55%
£μ±
AD7714
2′|óú′yú£êê±±Dìá1
CLKIN
£è1ú′é
óDê±ó£′÷téü±è1¨éüê ü μμá÷2¢éü±3é′D£×μ £
4.
ú
2.4576MHz f
CLKIN
μéDD
AD7714
2ú 2a꣨
1MHz
êêóóú3D
I
DD
2a꣣1¤×÷ú
400kHz
óéìD±£¤ £
5. POL=1
SCLK
óDD§±ê
SCLK
μμ£
POL=0
SCLK
óDD§±
SCLK
μééy £
6.
aDêyóí
1
μ oμ· 2aá2¢¨òaê3′
V
OL
ò
V
OH
TμùDèμê± £
7.
aDêy′óóí
1
μμ· óê±£êyYê3 ±
0.5V
ù¨· μ2aáê±μ3 £èoó· ′íaáêyò
3y
100pF
μèY3μò· μμó°ì £aòaרê±ìDDòyóμê±ê÷tyμ×üêí· ê±
òóía×ü oμèYT1 £
8.
ê3 üDoó£úμú
1
′′ó÷táó£
DRDY
· μ μ £èò×¢òa£2òúüò′ê
3 üDê±· ¢éúoóDμá2ù×÷£μê£è1Dèòμ°£ú
DRDY
a μê±£éù′áíùμêy
Y £ê1 éü2ó¨ ± £
0
30
20
100
100
0
ns min
ns min
ns min
ns min
ns min
ns min
CS Falling Edge to SCLK Active Edge Setup Time5
Data Valid to SCLK Edge Setup Time
Data Valid to SCLK Edge Hold Time
SCLK High Pulsewidth
SCLK Low Pulsewidth
CS
Rising Edge
to SCLK
Edge
Hold Time
TO OUTPUT
PIN
50pF
I
SINK
(800 A AT DV
DD
= +5V
100 A AT DV
DD
= +3.3V)
+1.6V
I
SOURCE
(200 A AT DV
DD
= +5V
100 A AT DV
DD
= +3.3V)
í
1
óóú′è ê±oí×üêí· ê±2aáμ oμ·
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