Datasheet
LTC2298/LTC2297/LTC2296
24
229876fa
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
12pF
C17
0.1µF
C14
0.1µF
C25
0.1µF
C30
18pF
R29
51Ω
L2
47nH
C28
2.2µF
C35
0.1µF
C24
0.1µF
C36
4.7µF
E3
V
DD
3V
E5
PWR
GND
V
DD
V
CC
V
CC
229876 TA02
C1
0.1µF
R16
33Ω
R32
22Ω
R1
1k
R2
1k
R3
1k
R10
1k
R14
49.9Ω
R20
24.9Ω
R18
24.9Ω
R24
24.9Ω
R17
OPT
R22
24.9Ω
R23
51Ω
T2
ETC1-1T
C29
0.1µF
C33
0.1µF
J3
CLOCK
INPUT
U6
NC7SVU04
U4
NC7SV86P5X
U7
NC7SV86P5X
U3
NC7SVU04
C13
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
12pF
C44
0.1µF
R6
24.9Ω
R5
24.9Ω
R9
24.9Ω
R4
OPT
R7
24.9Ω
R8
51Ω
T1
ETC1-1T
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
C16 0.1µF
U5 24LC025
25
23
27
29
31
33
35
37
39
21
19
15
17
13
9
7
1
3
5
2
4
11
26
24
30
28
34
32
38
40
39
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
40
3201S-40G1
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
36
22
20
16
18
14
10
8
6
12
R13
10k
R11
10k
R12
10k
R30
15Ω
R
N1D
33Ω
R
N1C
33Ω
R
N1B
33Ω
R
N1A
33Ω
R
N2D
33Ω
R
N2C
33Ω
R
N2B
33Ω
R
N2A
33Ω
R
N3D
33Ω
R
N3C
33Ω
R
N3B
33Ω
R
N3A
33Ω
R
N4D
33Ω
R
N4C
33Ω
R
N4B
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
E4
GND
V
CC
U10
NC7SV86P5X
V
CC
C40
0.1µF
C41
0.1µF
U1
LTC2298
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 SENSE A
C5
0.1µF
C26
0.1µF
V
CC
B3
B2
B4
B5
B6
B7
OE
B1
B0
A3
A1
A0
18
17
16
15
14
13
12
11
19
2
20
V
CC
74VCX245BQX
V
CC
3
4
5
6
7
8
9
1
10
A2
A7
T/R
GND
A5
A4
A6
B3
B2
B4
B5
B6
B7
OE
B1
B0
A3
A1
A0
18
17
16
15
14
13
12
11
19
2
20
V
CC
74VCX245BQX
V
CC
3
4
5
6
7
8
9
1
10
A2
A7
T/R
GND
A5
A4
A6
A0
A1
A2
A3
V
CC
WP
SCL
SDA
1
2
3
4
8
7
6
5
R27
TBD
R31
TBD
C32
18pF
L3
47nH
C42
8.2pF
L4
47nH
C43
8.2pF
R28
24Ω