[General Description]
The AK4533 is audio codec with touch screen controller. The AK4533 incorporates several functions into one-chip; the position detection of the touch screen, the measurement of battery voltage, the record of the voice, and the playback of audio data.

Featues
[ADC]
• 1ch mono16-bit ADC (For Microphone)
• 1st MIC Amplifier: 20dB Fixed Gain
• 2nd Amplifier: from -8dB to +27.5dB (0.5dB step)
• AGC function
• Analog Performance:
    - S/N: 82dBA @ fs=44.1kHz, MIC_GAIN=20dB(AGC=off, 0dB)

[Sampling Frequency]
Audio : from 8kHz to 44.1kHz

[DAC]
• 2ch(stereo) DAC
• Single End output
• Digital Attenuator
• Analog Performance
    - S/N: 88dBA@fs= 44.1kHz

[Touch Screen/Battery Check]
• SAR type A/D Converter: 12bit(10bit accuracy)
    - S/H circuit
    - 4-1 Multiplex (2ch :Touch Screen, 2ch : Check for the battery)
• Low Power Current: 20mA
• Low Voltage Operation
    - Analog, Digital: 3.0V
• Small Package: 48pin LQFP