Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2003 Bel Fuse Inc. Specifications subject to change without notice. 12.10.03
Page 1
CORPORATE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
EUROPE
Bel Stewart Connector
45/46 Riverside
Medway City Estate
Rochester, Kent ME2 4DP U.K.
Tel 44-1634-722890
Fax 44-1634-716677
www.belfuse.com
FAR EAST
Bel Fuse Ltd.
8F / 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
2003 Bel Fuse Inc. Specifications subject to change without notice. 12.10.03
Page 2
TIP
RING
HYBRID
TX
FIL
TER
TFMR
AFE
CHIP
(EXTERNAL)
CMC
RX
FIL
TER
APC78172
BLOCK DIAGRAM
FEATURES
APC78172 is designed to interface with Alcatel's MTC20156 ADSL/ISDN transceiver chipset to optimize the customer
premises equipment (CPE) designs. The hybrid contains components required between the analog front end chip and
the Telco connector, including the line interface transformer, common mode choke, line protection circuitry and transmit
and receive filters.
Excludes line driver and input capacitors (see note 2)
Pin compatible with Annex A module APC78106
1500V line isolation transformer
Complies with EN60950-1:2001 (Supplementary Isolation)
NOTES:
ALL TRACES BETWEEN APC PINS 10 AND 14 AND ELANTEC LINE DRIVER PINS 3 AND 5 RESPECTIVELY MUST BE KEPT SYMMETRICAL, PARALLEL
AND EQUIDISTANT.
APP DIAGRAM SHOWS LOCATION OF 2 X 820pF CAPACITORS TO BE ADDED EXTERNALLY.
APC78172 ANNEX B
APC78172DT ANNEX B. DT (DEUTSCHE TELEKOM)
APC78172
* Trans Hybrid loss through TX/RX > 20dB
Pin No.
Description
Pin No.
Description
Pin No.
Description
1
Tip
7
GND
13
N/C
2
Ring
8
RXP
14
8016 Pin 21/
EL1510C pin 5
3
TXN
9
RXN
15
8016 Pin 23/
EL1510C pin 7
4
TXP
10
8016 Pin 4/
EL1510C pin 3
16
8016 Pin 22/
EL1510C pin 6
5
A_GND_TX
11
8016 Pin 2/
EL1510C pin 1
17
N/C
6
N/C
12
8016 Pin 3/
EL1510C pin 2
18
N/C
Description
Passband
Frequency
Stopband
Frequency
Insertion Loss
dB max
Return Loss
dB min
Attenuation
dB min
Rx Filter HPF
280 kHz to 1 MHz
0 to 276 kHz
-10
-15
-40
Tx Filter BPF
130 kHz to 276 kHz
0 to 125kHz
16
-15
-40
ELECTRICAL SPECIFICATIONS
PINS 1-2 = TNV; PINS 3-16 = SELV
APC78172 APPLICATION DIAGRAM
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2003 Bel Fuse Inc. Specifications subject to change without notice. 12.10.03
Page 1
CORPORATE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
EUROPE
Bel Stewart Connector
45/46 Riverside
Medway City Estate
Rochester, Kent ME2 4DP U.K.
Tel 44-1634-722890
Fax 44-1634-716677
www.belfuse.com
FAR EAST
Bel Fuse Ltd.
8F / 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
2003 Bel Fuse Inc. Specifications subject to change without notice. 12.10.03
Page 2
5.
4m
m
3
5
.
6
E
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iew
1
8OFFH
OL
E
S
X1
.
0
0
2
9
.
7
3
3
.
0
2
2
.
5
4P
I
TC
H
I
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4P
L
A
C
E
S
1
9
1
0
1
8
R
e
c
o
m
m
e
n
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e
dP
.
C
.
BFoo
t
p
r
int
5
3
.
8
6
1
4
.
0
MAX
S
ideV
iew
2
.
8
2
.
9
5
B
o
t
t
o
mV
iew
APC78172 ANNEX B
APC78172DT ANNEX B. DT (DEUTSCHE TELEKOM)
APC78172
MECHANICAL
30
FREQUENCY RESPONSE
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