Datasheet
DS_1x66B_001 73M1866B/73M1966B Data Sheet
Rev. 1.6 29
Figure 13: Recommended Circuit for the 73M1866B
R6
17.4K, 1%
T1
Pulse Transf ormer
1
4
2 3
C1
0.022uF, 200V
C3
0.022uF, 200V
C43
1nF
C49
100pF
C35
220pF, 3kV
C30
1nF
R5
8.2
C33
1nF
R3 412K, 1%
R66
1M, 0805
VNS
VCC
C37
0.01uF
Maintain 2.5 mm Spacing Between
Line and Host Side Components
Isolation Barrier
C38
0.1uF
F1
TRF600-150
E1
P3100SBRP
C20
1nF
U1
73M1866B
DX
1
VPD
2
FS
3
PCLKO
4
VNA
5
PCLKI
6
AOUT
7
VPA
8
VNT
9
PRM
10
PRP
11
VPT
12
RST
13
SDIT
14
SDI
15
SDO
16
VND
17
INT
18
SCLK
19
CS
20
DR
21
SRE
22
SRB
23
VBG
24
ACS
25
VNS
26
VPS
27
RXP
28
RXM
29
TXM
30
DCD
31
DCS
32
DCG
33
DCI
34
RGN
35
RGP
36
OFH
37
M20PB
38
VNX
39
SCP
40
MID
41
VPX
42
RSTB
C26
1nF
SDITHRU
SPI OUT
SPI IN
SPI CLK
C39
5.6nF
C36
220pF, 3kV
VNS
SPI CSB
C9
0.22uF
PCM TX
C41
220pF, 300V
INTB
R11
3K
VCCVCCVCC
R68
1M, 0805
C17
0.1uF
PCM CLKIN
C13
15pF
C12
0.1uF
L1 2 kOhm@100MHz
PCM CLKO
C14
15pF
VNS
VNS
AOUT
R2
10M
+
C45
3.3uF
+
C21
3.3uF
+
C8
4.7uF
RING
TIP
R12
5.1K
-+
BR1
HD04
4
1
3
2
R58 240
R9
21K, 1%
Q3
MMBTA42
1
32
Q6
BCP56
1
23
4
L2 2 kOhm@100MHz
Q4
MMBTA92
1
3 2
R10
174, 1%
R4
100K, 1%
Q5
MMBTA06
1
3
2
PCM FS
C10
0.22uF
Q7
MMBTA42
1
32
C7
4.7uF, 25V
PCM RX
R65
200
NOTE: GND for C35 and C36 should be on
the host side of the barrier
C31
0.1uF
C48
0.1uF
R8
52.3K, 1%
C24
NC (as needed, 3KV)
+
C4
10uF
D1
MMSZ4710T1*
R69
100K*