Overview

The LA75676V-S is an NTSC intercarrier VIF/SIF IC that adopts a semi-adjustment-free structure. In particular, it uses VCO adjustment to make AFT adjustment unnecessary and thus simplifies the overall adjustment process. A PLL-based technique is adopted for FM detection. The 5 V supply voltage provides compatibility with other multimedia systems. In addition it achieves high audio quality by incorporating a built-in buzz canceller that suppresses Nyquist buzz.

Features

• No AFT or SIF coils are used, thus eliminating adjustments.

• Excellent audio performance due to the built-in buzz canceller.

• VCC = 5 V and a low power dissipation of 250 mW.

Functions

[VIF]

• VIF amplifier • PLL detector • RF AGC• EQ amplifier

• AFT • IF AGC • Buzz canceller

[SIF]

• Limiter amplifier • PLL FM detector