MH88617 Datasheet, PDF (1/16 Pages) Mitel Networks Corporation – Programmable SLIC with Ringing Amplification Advance Information

MH88617
Programmable SLIC with Ringing Amplification
Advance Information
Features
• Fully programmable line impedance,network
balance impedance and gains
• Programmable loop current with long loop
capability
• 2-4 Wire conversion
• Power down and wake up
• Battery feed to line with wide operating range
• Off-hook and dial pulse detection
• Over-current protection
• Integral ringing amplifier with auto ring trip
• Tip/Ring reversal
• Meter pulse injection
• On-hook transmission to the line capability
• Relay driver
• Short loop ringing capability with low voltage
DC supply
Applications
Line interface for:
• PABX/Key Telephone System
• Analog Terminal Adaptors
• Pair Gain System
• Fibre in the Loop/Wireless Local Loop
DS5037
ISSUE 4
Ordering Information
May 1999
MH88617AV-PI
MH88617AD-PI
MH88617AS-PI
MH88617AT-PI
21PIN SIL Package
28PIN DIL Package
28PIN SM Package
21PIN 90° L/F Package
-40°C to 85°C
Description
The Mitel MH88617 is a highly featured, low cost
Subscriber Line Interface Circuit (SLIC). It provides a
total analog transmission and signalling link between
a CODEC and a subscriber line. All functions are
integrated into a single thick film hybrid module,
which provides high reliability and optimum circuit
design needing a minimum of external components.
The line impedance, network balance impedance,
gain and loop current are all externally
programmable, making the device suitable for a wide
range of applications worldwide.
TIP
RING
VBAT VCC VEE GND
LCA
LR
Power
Management
Reversal
TIP / RING
Drive and
Sense
Constant
Current Control
Supervision
2 - 4 Wire
Conversion
Ringing Control
and
Amplifier
Auto Ring Trip
Metering
Injection
Gain Adjust
& Programmable
Network Balance
Programmable
Impedance
GVX
VX
VR
ZA
Relay Driver
RDI
RC RV DCRI
SHK
ESI
ESE
RDO
Figure 1 - Functional Block Diagram
2-157