Overview The LA2230 and LA2230M are RDS demodulator ICs with an on-chip 57kHz bandpass filter and ARI-SK and DK signal identifiers. A high-performance, cost-effective RDS decoder system with group/block synchronization and error detection/correction can be built using an LC7070 series device with the LA2230 or LA2230M. LA2230 and LA2230M feature adjustable ARI detection sensitivity for improved interference rejection and a highspeed charging circuit for rapid power-on start-up. Including the 57kHz bandpass filter on-chip results in lower-cost designs that use less PCB area. The LA2230 and LA2230M operate from a 5V supply and are avilable in 24-pin DIPs and 24-pin MFPs, respectively. Features • 57kHz bandpass filter. • Adjustable ARI detection sensitivity. • High-speed charging circuit. • ARI and RDS signal demodulation. • Bit-rate clock recovery. • RDS, DK and SK identification outputs. • 5V supply. • 24-pin DIP (LA2230) and 24-pin MFP (LA2230M)
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