Overview
The LA9520V is a receiver IC developed for free-space infrared transmission of stereo audio and video signals. It integrates all the required functions for reception, including I/V conversion for the received signal, a preamplifier, ALC, audio signal demodulation, and video signal demodulation functions, on a single chip. An AV coupler system can be implemented easily using this IC and a transmitter IC (such as the LA9511W or LA9512W).
Functions and Features
[Input Block]
⢠I/V conversion featuring excellent wideband characteristics
⢠Preamplifier ALC with wide ALC operating range
[Audio Block]
⢠Audio demodulator: Built-in 4.3 and 4.8 MHz demodulation circuits.
⢠Muting function: Mutes the output stage when there is no input signal. The muting function operating level can be adjusted from an input pin.
⢠Output amplifiers: The right and left levels can be adjusted by applying voltages to input pins. Electronic volume control support.
[Video Block]
⢠Video demodulator
⢠Video amplifier: Supports 75 ⦠drive. Adjustable output level: supports an electronic volume control.
⢠Muting function: Mutes the output stage when there is no input signal. The muting function operating level can be adjusted from an input pin.
⢠Filter: Removes unneeded high-frequency components.
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