APC78172 Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – APC78172 ANNEX B APC78172DT ANNEX B. DT (DEUTSCHE TELEKOM)

APC78172 ANNEX B
APC78172DT ANNEX B. DT (DEUTSCHE TELEKOM)
APC78172
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)
ELECTRICAL SPECIFICATIONS
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
* Trans Hybrid loss through TX/RX > 20dB
BLOCK DIAGRAM
TIP�
RING�
CMC�
TFMR�
HYBRID�
RX�
FILT�ER�
TX�
FILT�ER�
AFE�
CHIP�
(EXTERNAL)�
APC78172�
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.
PINS 1-2 = TNV; PINS 3-16 = SELV
APC78172 APPLICATION DIAGRAM
Pin No.
1
2
3
4
5
6
Description
Tip
Ring
TXN
TXP
A_GND_TX
N/C
Pin No.
7
8
9
10
11
12
Description
GND
RXP
RXN
8016 Pin 4/
EL1510C pin 3
8016 Pin 2/
EL1510C pin 1
8016 Pin 3/
EL1510C pin 2
Pin No.
13
14
15
16
17
18
Description
N/C
8016 Pin 21/
EL1510C pin 5
8016 Pin 23/
EL1510C pin 7
8016 Pin 22/
EL1510C pin 6
N/C
N/C
©2003 Bel Fuse Inc. Specifications subject to change without notice. 12.10.03
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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