Description
The CXA1991N is a tuner IC designed for use in FM pagers and FM multiplex broadcasting.  A receiver system can be configured by using the digital data output, in combination with a decoder.  It has a battery save function and ultra-low power consumption.

Features
• Ultra-low power consumption (ID = 1.2 mA for FM; ID = 0.8 mA for AM; VCC = 3 V)
• LED drive circuit for tuning
• Battery save function
• Few external parts

Applications
• Tuners for FM multiplex broadcasting
• FM pagers