CPC5622 Clare, CPC5622 Datasheet - Page 6

• Manufacturer Part Number: CPC5622
• Description: LITELINK III, Full-wave Ring Detect
• Manufacturer: Clare

CPC5622
2. Application Circuits
LITELINK can be used with telephone networks
worldwide. Some public telephone networks, notably
in North America and Japan require a resistive line
termination. Other telephone networks as in Europe,
China and elsewhere require reactive line termination.
2.1 Resistive Termination Application Circuit
Figure 3. Resistive Termination Application Circuit Schematic
¹This design was tested and found to comply with FCC Part 68 with this
Sidactor. Other compliance requirements may require a different part.
²Higher-noise power supplies may require substitution of a 220 µH inductor,
Toko 380HB-2215 or similar. See the Power Quality section of Clare
application note AN-146,
more information.
³Optional for enhanced transhybrid loss.
6
RING2
RING
10µ
C16
RX-
RX+
TX +
TX -
OH
3.3 or 5V
A
R23
10
200 mA
600 Ω
FB1
2
C14
C13
C4
C2
(R )
80.6K
R1
TX
C1
A
1µ
A
0.1µ
0.1µ
0.1µ
0.1µ
Guidelines for Effective LITELINK Designs
10
12
13
14
15
16
11
1
2
3
4
5
6
7
8
9
(R
130K
R2
TXSM
RING
RX-
RX+
RXF
RX
VDD
TX-
TX+
TX
MODE
GND
OH
RING2
SNP+
SNP-
RXF
)
LITELINK
U1
(R
1.5M
R3
SNPD
(C
(C
220p
220p
C8
SNP+
VDDL
C7
SNP-
REFL
TXSL
DCS1
DCS2
)
RPB
RXS
TXF
ZTX
ZNT
NTS
GAT
NTF
ZDC
BR-
BR-
)
)
4
4
20
17
32
31
30
29
28
27
26
25
24
23
21
19
18
22
BR-
0.1µ
C9
(R )
R4
68.1
(R
(R
PB
1.8M
1.8M
(R
60.4K
200K
R76
R5
SNP-2
SNP+2
R6
R7
(R
(R
1.69M
TXF
499K
BR-
R16
R12
8.2
BR-
NTF
R15
DCS2
BR-
)
(R
)
)
(R
www.clare.com
R10
301
)
(R
HTF
)
C18
221K
15p
ZNT
for
ZDC
R8
(R
261K
)
R75
)
NTX
)
3
(R
3
BR-
BR-
)
HTX
C21
100p
)
(C
(R
(R
(R
1M
R13
500V
GAT
C10
0.01µ
1.8M
1.8M
SNP-1
R45
SNP+1
NTS
R44
)
The application circuits that follow address both types
of line termination models. A reactive termination
application circuit that describes a TBR-21
implementation is shown
circuit can be easily adapted for other reactive
termination needs.
)
4
BR-
)
Use voltage ratings based on the isolation requirements of your application.
)
BR-
(R
(R
R21
6.49M
R22
6.49M
(C
(R
C12
0.027µ
3.32K
R18
DCS1B
DCS1A
DCS
ZTX
)
)
)
)
Resistor values are in Ohms
All resistors are 1%.
Capacitor values are in Farads.
NOTE: Unless otherwise noted:
(R
R14
5%
47
GAT
)
CPC5602C
Q1
(R
2
5%
R20
VDDL
in Figure 2.2 on page
)
BR-
+
-
BR-
DB1
0.01µ
500V
C15
8. This
SP1
Rev. 1.0
RING
TIP
1