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.

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