Datasheet

LTC2284
2284fa
20
APPLICATIO S I FOR ATIO
WUU
U
C21
0.1µF
C27
0.1µF
V
DD
V
DD
V
DD
V
DD
V
DD
V
CC
V
CMB
C20
2.2µF
C18 1µF
C23 1µF
C34
0.1µF
C31
*
C17
0.1µF
C14
0.1µF
C25
0.1µF
C28
2.2µF
C35
0.1µF
C24
0.1µF
C36
4.7µF
E3
V
DD
3V
E5
PWR
GND
V
DD
V
CC
2284 AI01
C1
0.1µF
R16
33Ω
R32
OPT
R39
OPT
R1
1k
R2
1k
R3
1k
R10
1k
R14
49.9Ω
R20
24.9Ω
R18
*
R24
*
R17
OPT
R22
24.9Ω
R23
51
T2
*
C29
0.1µF
C33
0.1µF
J3
CLOCK
INPUT
U6
NC7SVU04
U3
NC7SVU04
24
3
5
U4
NC7SV86P5X
C22
0.1µF
C15
0.1µF
C12
4.7µF
6.3V
L1
BEAD
V
DD
C19
0.1µF
C11
0.1µF
C4
0.1µF
C2
2.2µF
C10
2.2µF
C9 1µF
C13 1µF
R15
1k
J4
ANALOG
INPUT B
V
CC
1
2
3
4
••
5
V
CMB
C8
0.1µF
C6
*
C44
0.1µF
R6
24.9Ω
R5
*
R9
*
R4
OPT
R7
24.9Ω
R8
51
T1
*
C3
0.1µF
C7
0.1µF
J2
ANALOG
INPUT A
1
2
3
5
••
4
V
CMA
V
CMA
12
V
DD
V
DD
34
2/3V
DD
56
1/3V
DD
78
GND
JP1 MODE
R34
4.7k
R
N1A
33Ω
R
N1B
33Ω
R
N1C
33Ω
R
N1D
33Ω
R
N2A
33Ω
R
N2B
33Ω
R
N2C
33Ω
R
N2D
33Ω
R
N3A
33Ω
R
N3B
33Ω
R
N3C
33Ω
R
N3D
33Ω
R
N4A
33Ω
R
N4B
33Ω
R
N4C
33Ω
R
N5A
33Ω
R
N5B
33Ω
R
N5C
33Ω
R
N5D
33Ω
R
N6A
33Ω
R
N6B
33Ω
R
N6C
33Ω
R
N6D
33Ω
C39
1µF
C38
0.01µF
V
CC
V
DD
BYP
GND
ADJ
OUT
SHDN
GND
IN
1
2
3
4
8
U8
LT1763
7
6
5
GND
R26
100k
R25
105k
C37
10µF
6.3V
C46
0.1µF
E4
GND
C45
100µF
6.3V
OPT
C40
0.1µF
C48
0.1µF
C47
0.1µF
A
INA
+
A
INA
–
REFHA
REFHA
REFLA
REFLA
V
DD
CLKA
CLKB
V
DD
REFLB
REFLB
REFHB
REFHB
A
INB
–
A
INB
+
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
DA7
DA6
DA5
DA4
DA3
DA2
DA1
DA0
OFB
DB13
DB12
DB11
DB10
DB9
DB8
DB7
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
GND
V
DD
SENSEA
VCMA
MODE
SHDNA
OEA
OFA
DA13
DA12
DA11
DA10
DA9
DA8
OGND
OV
DD
GND
V
DD
SENSEB
VCMB
MUX
SHDNB
OEB
DB0
DB1
DB2
DB3
DB4
DB5
DB6
OGND
OV
DD
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
E2
EXT
REF B
12
V
DD
34
V
CM
V
DD
V
CMB
56
EXT REF
JP3 SENSE
E1
EXT
REF A
12
V
DD
34
V
CM
V
DD
56
EXT REF
JP2 SENSEA
C5
0.1µF
V
CC
B4
B5
B3
B2
B1
B0
OE
B6
B7
A4
A6
A7
11
12
13
14
15
16
17
18
19
9
20
V
CC
74VCX245BQX
V
CC
8
7
6
5
4
3
2
1
10
A5
A0
T/R
GND
A2
A3
A1
B4
B5
B3
B2
B1
B0
OE
B6
B7
A4
A6
A7
11
12
13
14
15
16
17
18
19
9
20
V
CC
74VCX245BQX
V
CC
8
7
6
5
4
3
2
1
10
A5
A0
T/R
GND
A2
A3
A1
U5
24LC025
A0
A1
A2
A3
V
CC
WP
SCL
SDA
1
2
3
4
8
7
6
5
24
3
5
U2
U9
B4
B5
B3
B2
B1
B0
OE
B6
B7
A4
A6
A7
11
12
13
14
15
16
17
18
19
9
20
V
CC
74VCX245BQX
V
CC
8
7
6
5
4
3
2
1
10
A5
A0
T/R
GND
A2
A3
A1
B4
B5
B3
B2
B1
B0
OE
B6
B7
A4
A6
A7
11
12
13
14
15
16
17
18
19
9
20
V
CC
74VCX245BQX
V
CC
8
7
6
5
4
3
2
1
10
A5
A0
T/R
GND
A2
A3
A1
U10
U11
R
N7A
33Ω
R
N7B
33Ω
R
N7C
33Ω
R
N7D
33Ω
R
N8A
33Ω
R
N8B
33Ω
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
73
75
77
80
82
84
86
88
90
92
94
96
98
100
79
81
83
85
87
89
91
93
95
97
99
V
CC
V
SS
SCL
SDA
R33
4.7k
ENABLE
V
CCIN
J1
EDGE-CON-100
R35
100k
1
4
5
3
2
+
C41
0.1µF
R38
4.99k
R37
4.99k
R36
4.99k
SCL
V
CCIN
V
SS
SDA
ASSEMBLY TYPE
DC851A-S
DC851A-T
U1
LTC2284IUP
LTC2284IUP
R5, R9, R18, R24
24.9Ω
12.4Ω
C6, C31
12pF
8pF
T1, T2
ETC1-1T
ETC1-1-13
INPUT FREQUENCY
f
IN
< 70MHz
f
IN
> 70MHz
*VERSION TABLE
U1
LTC2284