XRT7300IV View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT7300IV' PDF : 55 Pages View PDF
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XRT7300
E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.1.1
TRANSFORMER RECOMMENDATIONS
PARAMETER
VALUE
Turns Ratio
1:1
Primary Inductance
40µH
Isolation Voltage
Leakage Inductance
1500Vrms
0.6µH
PART NUMBER
PE-68629
PE-65966
PE-65967
T3001
VENDOR
Pulse
Pulse
Pulse
Pulse
TRANSFORMER VENDOR INFORMATION
Pulse
Corporate Office
12220 World Trade Drive
San Diego, CA 92128
Tel: (619)-674-8100
FAX: (619)-674-8262
Europe
1 & 2 Huxley Road
The Surrey Research Park
Guildford, Surrey GU2 5RE
United Kingdom
Tel: 44-1483-401700
FAX: 44-1483-401701
Asia
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
Tel: 65-287-8998
INSULATION
3000V
1500V
1500V
1500V
PACKAGE TYPE
Large Thru-Hole
Small Thru-Hole
Small SMT
Small SMT
FAX: 65-280-0080
3.0 THE RECEIVE SECTION
Figure 1 indicates that the XRT7300 Receive Section
consists of the following blocks:
• AGC/Equalizer
• Peak Detector
• Slicer
• Clock Recovery PLL
• Data Recovery
• HDB3/B3ZS Decoder
The purpose of the XRT7300 Receive Section is to
take an incoming attenuated/distorted bipolar signal
from the line and encode it back into the TTL/CMOS
format where it can be received and processed by
digital circuitry in the Terminal Equipment.
3.1 INTERFACING THE RECEIVE SECTION OF THE
XRT7300 TO THE LINE
By design, the Receive Section of the XRT7300 can
be transformer-coupled or capacitive-coupled to the
line. The specification documents for E3, DS3 and
STS-1 all specify 75Ohm termination loads when
transmitting over coaxial cable. It is recommended to
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