AK2345

CTCSS Encoder/Decoder with Voice Signal Circuit

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Description

The AK2345 is an IC which supports CTCSS (Continuous Tone Controlled Squelch System), compatible with the TIA/EIA-603 standard.

Key Features

(1)CTCSS (Continuous Tone Controlled Squelch System) Encoder/Decoder.

(2)Programmable for up to 50 CTCSS frequencies.

(3)Integrated CTCSS signal elimination filter.

(4)Built-in Adder TX CTCSS/CDCSS and voice signal.

(5)Built-in high speed CTCSS Decoder.

(6)Conform to CDCSS. (Continuous Digital Controlled Squelch System)

(7)Integrated voice signal circuits such as a limiter, splatter filter, etc.

(8)Built-in (3.6864 MHz or 4.194304 MHz) oscillator circuit with crystal oscillator. (Page 25)

(9)CMOS Process low voltage operation. (1.8V…5.5V)

(10)Compact plastic package is used. (24 pin VSOP)

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Block Diagram

Block Diagram

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