描述 Description

AK2347A includes audio filter, limiter, splatter filter, compandor, scrambler, which is highly integrated two-way radio baseband functions for FRS and LMR.
Audio high-pass filter shows a high attenuation in magnitude response characteristics under 250Hz that supports to eliminate a subaudio tone clearly.

特性 Features

? Audio processing
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? TX and RX amplifier
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? Pre/De-emphasis circuit
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? Compressor and Expander with no external components
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? Scrambler and De-scrambler in frequency inversion type (3.388kHz or 3.290kHz)
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? Limiter with level adjuster
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? Splatter filter for wide and narrow band
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? Digital controlled amplifier for microphone, modulator and demodulator sensitivity
? Sub-Audio filter with level adjuster for CTCSS and DCS
? Low power supply operation: 2.7 to 3,3V
? Wide range operating for temperature: -40 to 85 °C
? Oscillator circuit for 3.6864MHz and 3.579545MHz crystal
? Serial control interface operation
? Compact plastic packaging, 24-pin QFNJ (4.0x4.0x0.75mm 0.5mm pitch)