Overview

The LA2232 and LA2232M are RDS demodulator ICs that provide both a 57 kHz bandpass filter as well as ARISK and DK signal recognition functions on chip. Costeffective RDS decoder systems can be constructed by using an LA2232 or 2232M in conjunction with a synchronization and error detection/correction LSI from the LC7070 series. The LA2232 and 2232M provide improved sensitivity LA2230 and 2230M.

Features

• High RDS demodulation sensitivity

• Reduced costs and PCB area due to the inclusion of an on-chip 57 kHz bandpass filter

• Supports improved interference rejection characteristics by providing ARI detection sensitivity adjustment

• Quick operation startup due to a built-in rapid charging circuit for use at power application.

Applications

• RDS signal demodulation

• ARI signal demodulation and SK and DK recognition

Functions

• 57 kHz bandpass filter

• RDS signal demodulation

• Bit rate clock regeneration

• RDS identification output

• ARI signal demodulation

• SK identification output

• DK identification output

• Adjustable ARI detection sensitivity