Overview
The LA7911 is a tuner controller IC having such functions as band switch, inverter, low-pass filter, 33V referene Zener. It can be used for frequency synthesizer or voltage synthesizer according to external application.

Features
• 2-input 5-output band switch.
• Band switches of 2 types (LA7900 type or LA7910 type) available by changing-over C pin.
• Large maximum output current and small saturation voltage.
• Meets CATV tuner requirements.
• Usable for frequency synthesizer or voltage synthesizer by changeing connection of inverter and operational amplifier.

Functions
• Band switch (Equivalent to LA7900, LA7910 : Refer to the truth table).
• Inverter.
• Low-pass filter (Voltage follower, operational amplifier).
• 33V reference Zener.