The LA72910/12 devices are video modulator/demodulator circuits
ASK modulation and demodulation ( LA72912 ) Video signal FM modulation and demodulation Video signal emphasis and de-emphasis Video FM signal drop-out detection FM mute function at second-call Carrier frequency: 10.9 to 12.1MHz Power supply: +4.7V to +5.5Vdc Operating temperature range: -30 to +70°C RS Product Codes < 801-0291') 801-0291/ LA72910V-TLM-H < 801-0294') 801-0294/ LA72912V-TLM-H