3.3V Single channel PCM CODEC LSI

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The AK2301A is a single channel PCM CODEC for speech processing 8kHz sampling PCM data by DSP. The AK2301A interfaces with 14bit linear data (16bit format). It includes Band limiting filter, A/D and D/A converter, and universal op-amps for construction of the output filter. All functions are provided in small 24pin VSOP package and it is good for reducing the mounting space.

Key Features

■ Single PCM CODEC and filtering system

■ Mute function

■ PCM interface; 14bits linear data (16bit format, serial interface)

Long Frame / Short Frame are selected automatically

■ PCM data rate


■ Op-amp for the external gain adjustment

■ Dual universal op-amps

■ Single power supply voltage: +3.0 to +3.6V

■ Low power consumption

■ Small package

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Block Diagram

Block Diagram

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