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 LA72910V-TLM-H
801-0294 LA72912V-TLM-H