CPC5622 Ver la hoja de datos (PDF) - IXYS CORPORATION
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CPC5622 Datasheet PDF : 18 Pages
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INTEGRATED CIRCUITS DIVISION
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, such as in
Europe, China and elsewhere, require a reactive line
termination.
The application circuits that follow address both types
of line termination models. A reactive termination
application circuit that describes the TBR-21
implementation is shown in Figure 3 on page 8. This
circuit can be easily adapted for other reactive
termination needs.
2.1 Resistive Termination Application Circuit
Figure 2. Resistive Termination Application Circuit Schematic
3.3 or 5V
R23 2
10
C1
1μ
C16
10μ
A
TX-
TX+
OH
RING
RING2
RX-
RX+
FB1
600 Ω
200 mA A
R1
(RTX)
80.6K
1 VDD
U1
C9
0.1μ
LITELINK REFL 32
2 TXSM
BR-
TXF 31
C13 0.1μ 3 TX-
ZTX 30
C2 0.1μ 4 TX+ CPC5622 ZNT 29
5 TX
TXSL 28
6 MODE
BR- 27
A
7 GND
NTS 26
8 OH
GAT 25
9 RING
NTF 24
10 RING2
C14 0.1μ 11 RX-
C4 0.1μ 12 RX+
DCS1 23
DCS2 22
ZDC 21
13 SNP+
BR- 20
R5
(RTXF)
60.4K
BR-
R75
(RNTX)
261K
C10
0.01μ
500V
R13
(RNTS)
1M
R22
(RDCS1A)
6.49 M
R12
(RNTF)
499K
R15
(RDCS2)
1.69M
C21
100p
BR- (CGAT)
R21
(RDCS1B)
6.49M
C12
(CDCS)
0.027μ
BR-
R16
8.2
(RZDC)
3
14 SNP-
15 RXF
16 RX
R2
(RRXF)
130K
RPB 19
18
RXS
2R0706K(RHTRF)8
221K
BR-
(RHTX)
VDDL 17
C18
15p 3
R4
(RPB)
68.1
R10
(RZNT)
301
BR-
BR-
R18
(RZTX)
3.32K
BR-
R14
(RGAT)
47
5%
Q1
CPC5602C
R20
(RVDDL)
2
5%
C15
0.01μ
500V
BR-
+ DB1
-
BR-
TIP
SP1 1
RING
C7
(CSNP-) 4
220pF
R3
(RSNPD)
1.5M
C8
(CSNP+)
4
220pF
R6
(RSNP-2)
1.8M
R7
(RSNP+2)
1.8M
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 H inductor,
Toko 380HB-2215 or similar. See the Power Quality section of IXYS
Integrated Circuits Division application note AN-146, Guidelines for
Effective LITELINK Designs for more information.
R44
(RSNP-1)
1.8M
R45
(RSNP+1)
1.8M
NOTE: Unless otherwise noted:
Resistor values are in Ohms
All resistors are 1%.
Capacitor values are in Farads.
³Optional for enhanced transhybrid loss.
4Use voltage ratings based on the isolation requirements of your
application.
6
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R03
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