MH89101 Datasheet, PDF (1/4 Pages) Mitel Networks Corporation – Passive Line Termination Circuit Advance Information

MH89101
®
Passive Line Termination Circuit
Advance Information
Features
• Passive Line Termination (PLT) for MT8910
DSLIC
• High precision trimmed resistors
• Excellent resistor matching required to meet
longitudinal balance as specified in ANSI-
T1.601
• Compact SIL package
Applications
• Pair gain system
• ISDN NT1 and NT2 interfaces
• Digital multiplexers and concentrators
• ISDN U-interface terminals
ISSUE 1
Ordering Information
August 1991
MH89101
6 Pin SIL Package
0°C to +70°C
Description
The MH89101 is a thick film hybrid device which is
used in conjunction with the MT8910 to perform two
to four wire conversion and analog signal
conditioning on the received 2B1Q signal.
The signal conditioning is necessary to enable the
DSLIC to interface to the Digital Subscriber Line as
defined in ANSI T1.601-1988. The precanceller
block will perform two to four wire conversion and
provide adequate isolation between transmit and
receive paths.
The small size and the precise resistor matching on
the hybrid makes it suitable for line card or terminals
which use the MT8910 2B1Q U-Interface
Transceiver.
RXout -
RXout +
Compensator
Circuit
TXin +
Precanceller
TXin -
Figure 1 - Functional Block Diagram
XFM +
XFM -
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