AK2347A中文资料Two-way Radio Audio & Sub-Audio Processor数据手册AKM规格书

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
 
• TX and RX amplifier
 
• Pre/De-emphasis circuit
 
• Compressor and Expander with no external components
 
• Scrambler and De-scrambler in frequency inversion type (3.388kHz or 3.290kHz)
 
• Limiter with level adjuster
 
• Splatter filter for wide and narrow band
 
• 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)