Overview
The LA7710 is a SECAM (audio IF, electronic volume control, AF preamplifier) / PAL (quasi-parallel audio IF circuit) dual system IC that is packaged in a 16-pin DIP package. The LA7710 is applicable to the SECAM or PAL system by changing over the AGC system (pin 3 is brought to open state or grounded).

Features
• Used as SECAM audio IF circuit by bringing pin 3 to open state. Also used as PAL quasi-parallel audio IF circuit by grounding pin 3.
• Electronic volume control : 0dB output available.

Functions
• IF amplifier.
• Detector.
• IF AGC (peak AGC, average AGC).
• Electronic volume control.
• AF preamplifier.
• PAL/SECAM switch.