LC72121MA集成電路（IC）的時鐘發(fā)生器PLL頻率合成器規(guī)格書PDF中文資料

Overview

The LC72121MA are high input sensitivity (20mVrms at 130MHz) PLL frequency synthesizers for 3V systems.

These ICs are serial data (CCB) compatible with the LC72131K/KMA, and feature the improved input sensitivity and lower spurious radiation (provided by a redesigned ground system) required in high-performance AM/FM tuners.

Features

? High-speed programmable divider

? FMIN: 10 to 160MHz ·················· Pulse swallower technique (With built-in divide-by-2 prescaler)

? AMIN: 2 to 40MHz ····················· Pulse swallower technique 0.5 to 10MHz ·················· Direct division technique

? IF counter

? IFIN: 0.4 to 15MHz ····················· For AM and FM IF counting

? Reference frequency

? One of 12 reference frequencies can be selected (using a 4.5 or 7.2MHz crystal element) 1, 3, 5, 9, 10, 3.125, 6.25, 12.5, 15, 25, 50, and 100kHz

? Phase comparator

? Supports dead zone control.

? Built-in unlocked state detection circuit

? Built-in deadlock clear circuit

? An MOS transistor for an active low-pass filter is built in.

? I/O ports

? Output-only ports: 4 pins

? I/O ports: 2 pins

? Supports the output of a clock time base signal.

? Serial data I/O

? Support CCB format communication with the system controller.

? Operating ranges

? Supply voltage: 2.7 to 3.6V

? Operating temperature: -40 to +85°C

? Package

? MFP24SJ