Datasheet

16
LTC1608
APPLICATIO S I FOR ATIO
WUUU
C4 1µF
OV
DD
AV
DD1
AV
DD2
V
SS
SHDN
CS
CONV
RD
OV
DD
OGND
BUSY
D0
D1
D2
D3
D4
D5
D6
D7
A
IN
+
A
IN
–
V
REF
REFCOMP
AGND
AGND
AGND
AGND
DV
DD
DGND
D15
D14
D13
D12
D11
D10
D9
D8
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
U1 LTC1608
V
CC
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
CLK
1
2
3
4
5
6
7
8
9
10
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
D0
D1
D2
D3
D4
D5
D6
D7
GND
U2 MC74HC574ADT
V
CC
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
CLK
OE
D0
D1
D2
D3
D4
D5
D6
D7
GND
U3 74HC574
OV
DD
A
IN
+
A
IN
–
C11
2.2µF
C13
22µF
R6
10Ω
C10 22µF
5V
C12
22µF
OV
DD
C9
1µF
E4
GND
E1
5V
E5
3V
E2
–5V
E6
GND
5V
JP1
C7
1µF
C6
1µF
C5 1µF
5V
C8
0.1µF
R2
10k
C1
0.1µF
E7
GND
CLK
MSB
J1
CONN20
C28
22µF
R3
10Ω
R1
51k
OV
DD
J2
CONVERT
START
R5
10k
JP3
OV
DD
U5
TC7SH08FUTE85L
R4 10k
E3
V
REF
C3 0.1µF
JP2
OV
DD
U6
TC7SH04F
LSB
–
+
U4A
LT1469
4
–5V
8
5V
C21
0.1µF
C27
100pF
C20
0.1µF
C25
100pF
C24
100pF
C26
1000pF
A
IN
+
(U1-1)
A
IN
–
(U1-2)
R15
100Ω
R16
10k
C17
10pF
C18
10pF
C15 10pF
C16 10pF
R8 402Ω
R9
402Ω
R12
50Ω
R14
50Ω
R11
50Ω
R13
50Ω
1
3
2
–
+
U4B
LT1469
7
6
5
C23
100pF
C22
100pF
C19
1000pF
R10
50Ω
R17
10k
J3
A
IN
+
J4
A
IN
–
C14
1000pF
R7
50Ω
+
+ +
Figure 17a. LTC1608 Suggested Evaluation Circuit Schematic