參數(shù)資料
型號： AD7714(中文)
廠商： Analog Devices, Inc.
英文描述： Signal Conditioning ADC(信號調節(jié)A/D轉換器)
中文描述： 信號調理模數(shù)轉換器（信號調節(jié)的A / D轉換器）
文件頁數(shù)： 17/46頁
文件大?。?/td> 869K
代理商： AD7714(中文)
==99-10-14==
P&S
ooá|′μ×ó1é· YóDT1
==46-17==
3. 3 o 3￡êéù
±í ￠ó±í êμ±
f
CLKIN
=2.4576MHz
oí
BUFFER=+5V
ê±￡ó|óú3DμDíμ°úoí
-3dB
μê￡
AD7714-5
ê3
ù· ùéùoíóDD§· ±êμμDíμ ￡±í ￠ 3
f
CLKIN
=2.4576MHz
oí
BUFFER=+5V
ê±
AD7714-3
μêyY ￡ 3
μêyYêêóóúDêè· §2￠óé
0V
2 · ￡aêèμ12úéú ￡óú
AD7714-5
￡
V
REF
μ1a
+2.5V
￡óú
AD7714
￡
V
REF
μ1a
+1.25V
￡úò ±í Dà¨oúμêyYê÷tμóDD§· ±ê￡¨éáèá× óüμ
0.5LSB
￡￡
÷tμóDD§· ±ê¨òaê3ù· ùéùóêèúìè￡¨′￡
2
á
V
REF
/GAIN
￡±è ￡ó|μ±×￠òa￡2êó
·
-
· ê3éùêyYDD ￡·
-
· éùêyYéò ′ ù· ùêyYμ
6.6
±￡íê±￡ùóú
-
· éùμóDD§
· ±êêyYéò±è±í Dà¨oúùêμùóúù· ùéùμóDD§· ±êμí
2.5
￡
±í ￠ó
f
CLKIN
=2.4576MHz
ê±
AD7714-5
o3￡êμê3éù
/
· ±ê
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
Filter First
Notch & O/P
Data Rate
Typical Output RMS Noise in V (Effective Resolution in Bits)
Gain of
Gain of
Gain of
2
4
8
3 dB
Frequency
Gain of
Gain of
16
Gain of
32
Gain of
64
Gain of
128
1
5 Hz
10 Hz
25 Hz
30 Hz
50 Hz
60 Hz
100 Hz
250 Hz
500 Hz
1 kHz
1.31 Hz
2.62 Hz
6.55 Hz
7.86 Hz
13.1 Hz
15.72 Hz
26.2 Hz
65.5 Hz
131 Hz
262 Hz
0.99
1.5
2.5
2.9
4.2
6.1
13.8
87
508
2860 (11)
(22.5)
(21.5)
(21)
(20.5)
(20)
(19.5)
(18.5)
(16)
(13.5)
0.68 (22)
0.95 (21.5)
1.7
1.8
2.5
2.9
6.5
56
241
1700 (10.5)
0.46 (21.5) 0.26 (21)
0.63 (21)
0.88 (20.5) 0.75 (19.5) 0.57 (19)
1
(20)
0.87 (19.5) 0.75 (18.5) 0.72 (17.5) 0.72 (16.5) 0.71 (15.5)
1.5
(19.5) 1.1
(19)
0.94 (18.5) 0.94 (17.5) 0.94 (16.5) 0.87 (15.5)
2
(19.5) 1.2
(19)
1
(18.5) 0.97 (17.5) 0.95 (16.5) 0.94 (15.5)
3.5
(18.5) 2.2
(18)
1.3
(18)
25
(15.5) 11
(15.5) 5.7
(15.5) 3.6
117 (13.5) 73
(13)
34
(13)
745 (10.5) 480 (10.5) 197 (10.5) 94
0.26 (20)
0.26 (19)
0.26 (18)
0.26 (17)
0.41 (20.5) 0.39 (19.5) 0.36 (18.5) 0.36 (17.5) 0.36 (16.5)
0.57 (18)
(20.5)
(20.5)
(20)
(19.5)
(18.5)
(15.5)
(13.5)
0.57 (17)
0.56 (16)
1.2
(17)
(15.5) 2.4 (15)
(13)
8.5 (13)
(10.5) 53
1.3 (16)
1.1
2.1
5.2
(15)
(14)
(13)
(10.5)
16
(10.5) 23
±í ￠
f
CLKIN
=2.4576MHz
ê±
AD7714-3
o3￡êμê3éù
/
· ±ê
Filter First
Notch & O/P
Data Rate
Typical Output RMS Noise in V (Effective Resolution in Bits)
Gain of
Gain of
Gain of
2
4
8
3 dB
Frequency
Gain of
Gain of
16
Gain of
32
Gain of
64
Gain of
128
1
5 Hz
10 Hz
25 Hz
30 Hz
50 Hz
60 Hz
100 Hz
250 Hz
500 Hz
1 kHz
1.31 Hz
2.62 Hz
6.55 Hz
7.86 Hz
13.1 Hz
15.72 Hz
26.2 Hz
65.5 Hz
131 Hz
262 Hz
1.16
1.7
3.5
3.7
4.5
5.3
10
47
300
1722 (10.5)
(21)
(20.5)
(19.5)
(19.5)
(19)
(19)
(18)
(15.5)
(13.5)
0.76 (20.5)
1
1.8
2.2
3
3.3
4.9
29
171
735
0.34 (20)
0.7
1.1
1.3
1.7
1.8
3.1
15
74
380 (10.5) 230 (10.5) 93
0.29 (20)
0.46 (19.5) 0.45 (18.5) 0.4
0.74 (18.5) 0.63 (18)
0.76 (18.5) 0.68 (18)
(18.5) 1.0
(18)
(18.5) 1.1
(18)
(17.5) 1.5
(17.5) 1.2
(15.5) 7.5
(15.5) 4.7
(13)
35
(13)
0.29 (19)
0.28 (18)
0.26 (17)
0.26 (16)
(20.5)
(19.5)
(19)
(18.5)
(18.5)
(18)
(15.5)
(13)
(10.5)
(20)
(19)
(19)
(17.5) 0.4 (16.5) 0.4
(17)
0.6 (16)
0.66 (17)
0.66 (16)
0.92 (17.5) 0.9
(16.5) 0.89 (15.5) 0.89 (14.5)
1
(17)
0.96 (16.5) 0.96 (15.5) 0.96 (14.5)
(17)
1.2
(16)
(15)
2.6
(15)
21
(13)
8.6
(13)
(10.5) 55
(10.5) 30
(15.5)
(15)
0.6
0.6
0.66 (15)
1.2 (15)
2.5 (14)
5.6 (13)
1.2
1.6
3.1
(14)
(13.5)
(12.5)
(10.5)
(10.5) 12
3. 4 ú′÷
AD7714
°üo
8
ú′÷￡üéí¨1y÷tμ′DDú· ê ￡μú
1
′÷êí¨D′÷
￡¨
Communication Register
￡ü¨μàμ ￡¨ò 2ù×÷êáòD′2ù×÷￡1¨ò áòD′2ù
×÷· êò ′÷ ￡ùóDó÷tμí¨D±D′ó¨D′÷μD′2ù×÷aê ￡úéμò
RESET
ó￡÷
tμè′yí¨D′÷μD′2ù×÷ ￡D′á′′÷μêyY¨÷tμò′2ù×÷êáòD′2ù×÷2￠¨
ò ′÷· ￠éúáòD′2ù×÷ ￡òò′￡÷tDèoü′÷μ· ê′ó¨D′÷μD′2ù×÷aê￡oó
ù ′÷μD′2ù×÷ ￡÷tDèoü′÷￡¨°üà¨ê3êyY′÷￡á2ù×÷aêóú¨D′
÷μD′2ù×÷￡oóù ′÷μá2ù×÷ ￡í¨D′÷ò¨μàμ ￡í¨1yáí¨D′÷￡1éàó
DRDY
μ×′ì ￡μú
2
′÷ê￡ê′÷￡¨
Mode Register
￡ü¨D￡×￡êoíòμéè ￡μú
3
′
÷3a2¨÷ ′÷￡¨
Filter High Register
￡ü¨×μ3¤è ￠
/
μ￥Dù×÷2￠°üà¨2¨÷ ×μ
4
￡μú
4
′÷3a2¨÷μí′÷￡¨
Filter Low Register
￡￠°üo2¨÷ ×μμí
8
￡μú
5
′÷
ê2aê′÷￡¨
Test Register
￡üú2aê÷tê±±· ê ￡μú
6
′÷êêyY′÷￡¨
Data Register
￡′óa(chǎn)
′÷é· ê÷tμê3êyY ￡× oóò ′÷êD · ê÷tμD￡×′÷ ￡áìèD￡×′÷￡¨
Zero
Scale Calibration Register
￡êD · êù êèí¨μàμáìèD￡×μêy￡úìèD￡×′÷￡¨
Full Scale
Calibration Register
￡êD · êù êèí¨μàμúìèD￡×μêy ￡ú ÷úDê ìaD′÷ ￡
3. 4. 1 í¨D′÷￡¨RS2-RS0=0￡0￡0￡
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參數(shù)描述
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