Overview
The LA3450 is a multifunctional, high-performance FM multiplex demodulator IC designed for high-grade FM stereo tuner use. The LA3450 features adjustment-free VCO, measure against adjacent channel interference, pilot canceler, low distortion (0.005%), and high S/N (101dB).

FEATUREs
• Adjustmet-free VCO : Eliminates the need to adjust freerunning frequency.
• Good temperature characteristics of VCO : ±0.1% typ. for ±50°C change.
• No antibirdie filter is required because a measure is taken against adjacent channel interference.
• Less carrier leak 19kHz : 53dB 38kHz : 50dB
• The on-chip cal-tone signal generator facilitates application of recording calibrator.
• Low distortion MONO 0.005% STEREO 0.015%
• High S/N 101dB typ. MONO IHF-A BPF
• High voltage gain FM : 10dB (gain variable) AM : 16dB (gain variable)
• Wide dynamic range Output level 3.3V typ. (THD=1%, MONO)

Functions
• PLL multiplex stereo demodulator.
• Adjustment-free VCO.
• Measure against adjacent channel interference.
• Pilot canceler.
• Cal-tone signal generator.
• AM/FM input, AM/FM selector.
• Post amplifier (gain variable type).
• VCO stop.
• Right/left independent adjustment of separation (single adjustment available).

APPLICATIONs
• Home stereo, CD, AV-use PLL FM MPX stereo demodulator IC with adjustment-free VCO.