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I2S Audio DAC + Headphone and Stereo Class-AB/D Speaker Amplifier
General Description
The ALC5626 is a highly-integrated I2S/PCM interface audio DAC with multiple input/output ports, and is designed for multimedia handheld devices. It provides a Stereo Hi-Fi DAC for playback via the I2S/PCM interface.
To reduce component count, the ALC5626 can connect to:
  • LINEIN_L/R stereo Single-Ended analog inputs that can be configured to Differential analog input
  • AUXIN_L/R stereo Single-Ended analog inputs that can be configured to Differential analog input
  • LINE3_L/R stereo Single-Ended analog inputs
  • Single-Ended stereo Headphone Output
  • STEREO Bridge-Tied Load (BTL) Speaker Output
Multiple analog input and output pins are provided for seamless integration with analog connected wireless communication devices. Differential input/output connections efficiently reduce noise interference, providing better sound quality. Class-AB/D amplifiers can be directly connected to an up to 2.4 Watt Stereo Speaker, removing the need for an additional amplifier, further cutting both cost and required board area.
The ALC5626 AVDD operates at supply voltages from 2.3V to 3.6V. DCVDD and DBVDD operate from 1.8 to 3.6V, and SPKVDD operates from 2.3 to 5V. To extend battery life, each section of the device can be powered down individually under software control. Leakage current in maximum power saving state is less than 10µA.
The ALC5626 is available in a 5x5mm ‘Green’ QFN-32 package, making it ideal for use in handheld portable systems.
    • Digital-to-Analog Converter with 100dB SNR, and –86dB THD+N at 3.3V
    • Three analog stereo single-ended or one stereo differential input, LINEIN_L/R, AUXIN_L/R, and LINE3_L/R
    • Stereo BTL (Bridge-Tied Load) Class-AB/D Speaker output with on-chip 2.4W speaker driver (SPKVDD=5V, 4 load, 10% THD+N)
    • Supports playback soft-mute, digital volume, digital AVC
    • Stereo headphone output with on-chip 45mW headphone driver (AVDD=3.3V, 16 load)
    • Supports pop noise suppression with external capacitor
    • Speaker amplifier power supplies from 2.3V to 5V
    • Digital power supplies from 1.8V to 3.6V
    • Analog power and headphone power supplied from 2.3V to 3.6V
    • Power management and enhanced power saving
    • Internal PLL can receive wide range of clock input
    • Supports sampling rate 8KHz~192KHz
    • Supports I2C control interface
    • Supports three programmable data interfaces
      • I2S, left justified, or DSP
      • 16/20/24 bits word length
      • Master or Slave clock mode
    • 32-pin QFN 5x5mm package for small footprint
    • Portable Media Player
    • MP3 Player
    • Bluetooth A2DP (Advanced Audio Distribution Profile) Headsets
    • Portable Navigation Device (PND)
    • Multimedia Phone
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