Datasheet

LTC2282
20
2282fb
APPLICATIONS INFORMATION
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
2282 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
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
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
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
R37
4.99k
R36
4.99k
V
CCIN
V
SS
SCL SDA
LTC2282
A
INA
+
A
INA
–
REFHA REFHA REFLA REFLA V
DD
CLKA CLKB V
DD
REFLB REFLB REFHB REFHB A
INB
–
A
INB
+
DA5 DA4 DA3 DA2 DA1 DA0
NC NC
OFB
DB11 DB10
DB9 DB8 DB7 DB6 DB5
GND
V
DD
SENSEA
VCMA
MODE
SHDNA
OEA
OFA
DA11
DA10
DA9
DA8
DA7
DA6
OGND
OV
DD
GND
V
DD
SENSEB
VCMB
MUX
SHDNB
OEB
NC
NC
DB0
DB1
DB2
DB3
DB4
OGND
OV
DD
ASSEMBLY TYPE
DC851A-U
DC851A-V
U1
LTC2282IUP LTC2282IUP
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
R38