L9500A High-Voltage Ringing SLIC

L9500A High-Voltage Ringing SLIC

This device is optimized to provide battery feed, ringing, and supervision on short-loop plain old telephone service (POTS) loops. This device provides power ring to the subscriber loop through amplification of a low-voltage input. It provides forward and reverse battery feed states, onhook transmis.

Features

s Differential ringing and codec interface s Onboard ringing generation s Three ringing input options: — Sine wave — PWM — Logic level square wave s Flexible VCC options: — 5 V or 3.3 V VCC — No
  –5 V required s Battery switch to minimize off-hook power s Eight operating states: — Scan mode for minimal power dissipation — Forward and reverse battery active — On-hook transmission states — Ground start — Ring mode — Disconnect mode s Ultralow on-hook power: — 27 mW scan mode — 38 mW active mode s Loop start, ring trip, and ground start detection s Software-controllable dual current limit option s.