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.