®
OPTION
+15V
+5VA
SG5
SG6
C18
R2
(Optional)
4
–
5
U4
+5VF
(Optional)
C19
SG7
+5VF
14
-5VA
-15V
X1
8
1
R3
1
2
74HCT86
SG4
–5V
–5V
ANA. IN
+5VA
U1
OFFSET
ADJUST
+15V
R1
2
-15V
20k
C3
C10
0.01µF
2.2µF
C22
2.2µF
0.01µF
+5V
START CONVERT
U5
3
3.2k
+
2.2µF
2 3
0.1µF
C21
C25
15pF
HCT7474
C26
C27
2.2µF
7
4
2
3
1
JPR1
C17
PR
5
D
U6
Q
6
CK
Q
CLR
7
SG8
0.1µF
(Optional)
SG9
14
2.2µF
+5VF
8MHz
CRYSTAL
+5VF
0.1µF
C24
+
C23
10
P3
CLC402
HI2541
11
START
CONV.
0.1µF
(Optional)
®
P4
ANA.
IN
6
+
ANA. IN
L1
20µH
2.2µF
0.01µF
0.1µF
+
C1
L2
+
C8
74HCT573
20µH
C2
C9
L3
+
2
3
4
5
6
7
8
9
11
+
2.2µF
C16
0.1µF
20µH
+
20
Q1 19
1D
18
2D
Q2
Q3 17
3D
16
4D
Q4
15
5D
U3
Q5
6D
Q6 14
13
Q7
7D
Q8 12
8D
OE 1
CE
10
+5VF
L4
C20
C4
–5VA
0.1µF
2.2µF
0.01µF
ADS-946
C11
+
+
20µH
C6
C13
+5VF
2.2µF
0.01µF
+5VA
U6
12
13
7 GND
74HCT86
4
5
U5
6
U5
11
Q
9
8
C7
0.01µF
HCT7474
C14
14
0.1µF
+5VF
C15
+
+
7
+5V
C5
–15V
2.2µF
0.01µF
+15V
SPARE GATES
9
U5
10
C12
2.2µF
10
12
11
13
PR
D
CK
CLR
20µH
24
23
22
21
20
19
18
17
16
15
14
13
AGND
BIT1 1
OFFSET
BIT2 2
+5VA
BIT3 3
AIN
BIT4 4
-5V
BIT5 5
AGND
BIT6 6
TRIG
BIT7 7
EOC
BIT8 8
BIT14
BIT9 9
BIT13
BIT10 10
DGND
BIT11 11
+5VD
BIT12 12
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
TRIG
JPR2
1
2 3
CE
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
P1
L5
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
20µH
2
3
4
5
6
7
8
9
11
20
Q1
1D
2D
Q2
Q3
3D
4D
Q4
U2
Q5
5D
6D
Q6
Q7
7D
Q8
8D
OE
CE
10
8
74HCT86
19
18
17
16
15
14
13
12
1
74HCT573
26
24
22
20
18
16
14
12
10
8
6
4
2
25
23
21
19
17
15
13
11
9
7
5
3
1
L6
P2
SG1
L7
SG2
20µH
NOTES:
SG3
SG10
1. UNLESS OTHERWISE SPECIFIED ALL CAPACITORS ARE 50V.
C1 - C7 ARE 20V.
ALL RESISTORS ARE IN OHMS.
2. CLOSE SG1-SG3, SG9, SG10.
3. SEE DATEL DWG A-24546 FOR ADDITIONAL INFORMATION
ON ADS-B946 EVALUATION BOARD.
ADS-946
Figure 7. ADS-946 Evaluation Board Schematic (ADS-B946)
MURATA-PS [ MURATA POWER SOLUTIONS INC. ]
