Overview
The LA3460M is a high performance car stereo tuner IC that includes an FM noise canceller and a stereo multiplex demodulator.

Features
[Noise Canceller Block]
• Improved ignition noise rejection during medium to weak field reception Adoption of a new noise AGC circuit Optimized gate time
• High audio quality design with malfunction prevention in the high frequency band and for overmodulated signals Improved dynamic range low-pass and high-pass filters

[Multiplex Block]
• High signal-to-noise ratio and low distortion (stereo S/N ratio: 79 dB, THD: 0.1 %)
• Good high frequency band separation (50 dB at 1 kHz and 30 dB at 10 kHz)
• Adoption of a PLL circuit with an adjustment-free VCO (456 kHz ceramic resonator)
• Improved pilot cancellation level (25 to 30 dB) using a new cancellation circuit
• Built-in 114 kHz and 190 kHz anti-birdie filters
• Adoption of new SNC characteristics to reduce multipath noise
• Reduced printed circuit board space requirements due to the adoption of a mini-flat package (MFP-24)

Functions
[Noise Canceller Block]
• Built-in low- and high-pass filters
• Noise AGC
• Pilot signal compensation function

[Multiplex Block]
• Adjustment-free VCO (456 kHz)
• Level follower type pilot canceller
• SNC (stereo noise control)
• HCC (high cut control)
• Stereo indicator driver
• VCO oscillator stop function