L9218G

Data Sheet November 2001 L9218A/G Low-Cost Line Interface Features s Basic forward battery only SLIC functionality at a low cost s Pin compatible with Agere Systems Inc. L9219 and L9217 SLIC s Low active power (typical 138 mW during on-hook transmission) s Low-power scan mode for low-power, on-hook power dissipation (59 mW typical) s Minimal external components s Distortion-free, on-hook transmission s Convenient operating states: — Forward battery low current limit — Forward battery high current limit — Low-power scan — Disconnect (high impedance) s Adjustable supervision functions: — Off-hook detector with hysteresis — Ring trip detector s Logic controlled high and low current limit s Two gain options to optimize the codec interface s Thermal protection with thermal shutdown indication Description This general-purpose electronic subscriber loop interface circuit (SLIC) is optimized for low cost, while still providing a satisfactory set of features. The L9218 is pin-for...