[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