LC72147V

Ordering number : ENN6675 CMOS IC LC72147V PLL Frequency Synthesizer for Electronic Tuning in Car Audio Systems Overview The LC72147V is a PLL frequency synthesizer for car audio systems. It can implement high-performance multifunction tuners and features a crystal oscillator circuit that supports AM up-conversion, a fast locking circuit, an A/D converter, and an LA1783/1750 IF counter buffer control pin. Functions High-speed programmable divider — FMIN: 10 to 180 MHz: Pulse swallower type IF counter — HCTR: 0.4 to 25 MHz: Frequency measurement Crystal oscillator: One of the following 4 frequencies may be selected: 10.35, 10.25, 7.2, and 4.5 MHz Reference frequency — One of 12 frequencies may be selected (when a 7.2 or 4.5 MHz crystal is used) 100*1, 50, 30*2, 25, 12.5, 6.25, 3.125, 10, 9*2, 5, 3*2, 1 kHz Notes: 1. Cannot be used when a 10.35 or 10.25 MHz crystal is used 2. Cannot be used when a 10.25 MHz crystal is used Phase comparator — Supports dead band control — Built-in unlock detection circuit — Sub-charge pump for fast locking — Built-in deadlock clearing circuit Built-in MOS transistor for forming an active low-pass filter CCB is a trademark of SANYO ELECTRIC CO., LTD. I/O ports — General-purpose I/O: 5 pins — Output: n-channel: 3 pins, CMOS: 2 pins — IFBC pin (LA1783/1750 IF counter buffer control pin) Serial data I/O — Supports communication with the controller in the CCB format. Operating ranges — Supply voltage (VDD): 4.5 to 6.5 V — Built-...