MT91610 - Programmable Ringing SLIC
The Zarlink MT91610, with an external bipolar driver (Figure 4), provides an interface between a switching system and a subscriber loop.
The functions provided by the MT91610 include battery feed, programmable constant current with constant voltage fold over for long loops, 2W to 4W conversion, off-
MT91610 Features
* Transformerless 2W to 4W conversion Controls battery feed to line Programmable line impedance Programmable network balance impedance Off-hook and dial