INTRODUCTION
KB8527B is a monolithic circuit which can be used in high performance 60MHz MCA type CLP System.
The KB8527B is a subsystem IC for FM / FSK receiving systems and a complete one chip FM / FSK receiver IC for 60MHz system. It`s feature includes receiving functions for FM / FSK systems, a compandor to remove external noise, and PLL ( Phase Lock Loop ) of channel selection which blocks surrounding frequency interference.

FEATURES
• Operating voltage range : 2.0V ~ 5.5V
• Typical supply current : 13.5mA at 3.6V
• Built - in low battery detection function ( selectable 3.45V, 3.3V, 3.0V, 2.2V, 2.1V )
• Built - in speaker amplifier
• Built - in splatter filter
• Built - in dual conversion receiver, compandor and universal PLL
• FM Receiver
   - Complete dual coversion circuit
   - Excellent input sensitivity (0.7mVrms at 20dB SINAD)
• Compandor
   - Easy gain control to use external component
   - Included ALC (Automatic Level Control) circuit
   - Included Mute logic
• Universal PLL
   - RX (TX) divided counter range : 1/16 ~ 1/16383
   - Reference frequency divided counter range : 1/16 ~ 1/4095
   - Lock detector signal output
   - Serial interface with MICOM for controlling each block