Specifications

AN93
Rev. 0.9 153
Figure 28. Illustrated Layout Guidelines+
RING
TIP
4A
4B
4C
4D
4E
4F
4G
4F
5
6
3A
3C 3E
3B
3A
3E
3E
3E3E
7A
7B 7C 7C
7B7B
9A
10
10
11
12
12
12
12
11
8C
8D
8D
9B
9C
9C
9C
11
2
2
22
This is not a complete schematic. Only critical component placement and nets are drawn.
1
Traces, pad sites and vias
enclosed in box are in the DAA
section, and must be separated
from all other circuits by 5 mm.
Note: Encircled references are described in the numbered paragraphs in Appendix A.
R9
R8
C9
FB2
C26
RV1
R12*
-+
D1
R7
R16
C1
C5
C8
C50
Y1
1 2
U1 Si24HS
XTALI
1
XTALO
2
VDD3.3
5
GND
6
C1A
14
C1B
13
VDDA
7
VDD3.3
21
GND
20
VDDB
19
U2 Si3018
QE
1
DCT
2
RX
3
IB
4
C1B
5
C2B
6
VREG
7
RNG1
8
DCT2
16
IGND
15
DCT3
14
QB
13
QE2
12
SC
11
VREG2
10
RNG2
9
C53
R15
C52
C27
Q5
R2
C2
C7
Q4
+
C4
C6
FB1
C51
R13*
C3
*Note: Do NOT use ferrite
beads in place of R12 and
R13.