MT91600 Datasheet, PDF (1/18 Pages) Mitel Networks Corporation – Programmable SLIC

Features
• Transformerless 2 W to 4 W conversion
• Controls battery feed to line
• Programmable line impedance
• Programmable network balance impedance
• Off-hook and dial pulse detection
• Ring ground over-current protection
• Programmable gain
• Programmable constant current feed
• -22 V to -72 V battery operation
Applications
Line interface for:
• PABX/ONS
• Intercoms
• Key Telephone Systems
• Control Systems
MT91600
Programmable SLIC
Data Sheet
February 2005
Ordering Information
MT91600AN
MT91600ANR
MT91600AN1
MT91600ANR1
28 Pin SSOP
28 Pin SSOP
28 Pin SSOP*
28 Pin SSOP*
*Pb Free Matte Tin
-40°C to +85°C
Tubes
Tape & Reel
Tubes
Tape & Reel
Description
The Zarlink MT91600 provides an interface between
a switching system and a subscriber loop, mainly for
short loop SLIC applications. The functions provided
by the MT91600 include battery feed, programmable
constant current, 2 W to 4 W conversion, off-hook
and dial pulse detection, user definable line and
network balance impedance’s and the capability of
programming the audio gain externally. The device is
fabricated as a CMOS circuit in a 28 pin SSOP
package.
X3 X2
X1
TD
TF
TIP
RING
RF
C3A
C3B
RV
RD
Tip Drive
Controller
Line Sense
Over-Current
Protection Circuit
Ring Drive
Controller
Audio Gain & Network
Balance Circuit
2 W to 4 W
Conversion & Line
Impedance
Loop Supervision
Relay
Driver
IC
VREF SHK C1 C2A C2B
VDD GND VEE
Figure 1 - Functional Block Diagram
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 1999-2005 Zarlink Semiconductor Inc. All Rights Reserved.
VX
VR
Z3
Z2
Z1
RLYC
RLYD