DESCRIPTION

· The AK5522 is a 32-bit A/D converter with a sampling rate from 8kHz to 192kHz, designed for line and microphone inputs in digital audio systems.

· It features a dynamic range of 108dB and S/(N+D) of 98dB, maintaining low power consumption.

· Includes four selectable digital filters for sound quality customization.

· High PSRR and CMRR ensure performance stability with noisy power supplies like USB or DCDC converters.

· Integrated low-jitter PLL circuit for master clock generation, reducing EMI and component count.

FEATURES

· Sampling Rate: 8kHz - 192kHz.

· Input Types: Full Differential, Pseudo Differential, Single-Ended.

· S/(N+D): 98dB typical.

· Dynamic Range, S/N: 108dB typical.

· PSRR and CMRR: 80dB typical.

· Internal Filters: Four types of LPF and Digital HPF.

· Output Formats: 32-bit MSB justified, I2S, or TDM.

· Operation Modes: Master or Slave.

· Programmable Gain Amp: -3dB to +12dB in 1dB steps.

· Integrated PLL for master clock generation from BICK or LRCK.

· Voltage Regulator: Generates 3.3V for external DAC from 5V AVDD.

· Power Supply: Analog 4.5-5.5V or 3.0-3.6V, Digital 3.0-3.6V or 1.7-1.98V.

· Control Modes: Parallel (Pin setting) and Serial (I2C Bus setting).

· Power Consumption: 76mW at AVDD=5.0V, DVDD=3.3V, fs=48kHz.

· Operation Temperature: -40°C to 105°C.

· Package: 24-pin QFN 4mmx4mm, 0.5mm pitch.

APPLICATIONS

· Suitable for USB audio interfaces, wireless speakers, and car audio equipment.

· Ideal for environments with noisy power supplies.

· Can be paired with DACs like AK4432 or AK4452 for enhanced performance in poor power conditions.