View la1175 datasheet:

Ordering number : EN2276B Monolithic Linear IC LA1175, 1175M FM Front End For Car Radio, Home Stereo Applications Functions Package Dimensions • Double-balanced type MIX, PIN diode drive AGC output, unit: mm MOS FET gate drive AGC output, keyed AGC, 3020A-SIP16 differential IF amplifier, buffer amplifier for oscillation, [LA1175] local oscillation. Features • By using the keyed AGC system, which is effective in improving the sensitivity suppression characteristic, in combination with the antenna damping AGC (PIN diode driver on chip) and MOS FET 2nd gate drive AGC, the intermodulation characteristic for a large undesired signal is greatly improved. It is also possible to use the keyed SANYO: SIP16 AGC system in combination with the antenna damping AGC or MOS FET 2nd