LA8580W

Ordering number : ENN7737 www.DataSheet4U.com Monolithic Linear IC LA8580W Compander + I/O Switching Telephone Audio Signal-Processing IC Overview The LA8580W is an I/O switching audio signalprocessing IC for low-power cordless telephone base sets. It also supports personal fax machines for the Japanese domestic market. It integrates an extensive set of functions, including a compander, a crosspoint switch for I/O switching, an electronic volume control, and level switching, ALC, VOX, and filter circuits. Applications Low-power cordless telephone base sets and Japanese market home fax machines. Built-in electronic volume control (about 2 dB per step over 15 steps) and extensive set of level switching circuits allow this IC to easily switch signals with a wide range of levels. A compander circuit, which provides noise reduction during communication, is built in. This circuit can also be used for noise suppression and improved audio quality in wireless communication systems. Built-in splatter filter (fifth order Butterworth filter with settable center frequency) for reduced parts counts. Package Dimensions unit: mm 3190A-SQFP64 (0.5 mm lead pitch) [LA8580W] 12.0 10.0 Functions Crosspoint switch (equivalent to 10 × 9) and electronic volume control (VOL) Audio level switching (ATT) for the telephone circuit system, the handset system, both DSP systems, the doorphone system, and the microphone system Dedicated ring-tone input pin (OSC-IN), ring-tone level switc...