AKM AK4558EN

The AK4558 is a low voltage 32bit 216kHz CODEC for high performance battery powered digital audio subsystems. An internal circuit includes newly developed 32-bit Digital Filter achieving short group delay and high quality sound. In addition, “OSR-Doubler” technology is newly adopted, making the AK4558 capable of supporting wide range signals and achieving low out-of-band noise while realizing low power consumption. The AK4558 is ideal for a wide range of applications that demands high sound quality including Electronic musical instruments and Audio Interfaces. The analog inputs and outputs are single-ended to minimize pin count and external filtering requirements. The AK4558 is housed in a very small 28-pin QFN. It is ideal for space-sensitive applications.

• Single-ended ADC
  • Dynamic Range, S/N: 108dB@AVDD=3.3V
  • ∇⋅S/(N + D): 92dB@AVDD=3.3V
  • Selectable HPF for DC-offset cancel (fc = 1Hz @ fs=48kHz)
  • 4-types Digital Filter for High Sound Quality
• Single-ended DAC
  • Dynamic Range, S/N: 108dB@AVDD=3.3V
  • δ=S/(N + D): 100dB@AVDD=3.3V
  • Digital de-emphasis for 32kHz, 44.1kHz and 48kHz sampling
  • 5-types Digital Filter for High Sound Quality
  • Channel Independent Digital Attenuator (256 levels, 0.5dB steps)
• Audio I/F format: MSB First, 2’s Complement
  • ADC: 24/32bit MSB justified, 24/32bit |²S compatible or TDM
  • DAC: 24/32bit MSB justified, 16/20/24/32bit LSB justified, 24/32bit |²S compatible or TDM
• Input/Output Voltage: ADC = 2.64Vpp @ AVDD=3.3V, DAC=2.51Vpp @ AVDD=3.3V
• Master/Slave mode
• μP I/F: |²c Bus
• Sampling Rate:
  • (1) PLL Mode
    • PLL Slave Mode (LRCK pin): fs = 8kHz  216kHz
    • PLL Slave Mode (BICK pin): fs = 8kHz ~ 216kHz
    • PLL Master Mode: 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz, 54kHz, 88.2kHz, 96kHz, 128kHz, 176.4kHz, 192kHz
  • (2) External Clock Mode
    • Normal Speed: 8kHz to 54kHz (256fs or 512fs), 8kHz to 48kHz (384fs or 768fs)
    • Double Speed: 54kHz to 108kHz (256fs), 48kHz to 96kHz (384fs)
    • Quad Speed: 108kHz to 216kHz (128fs), 96kHz to 192kHz (192fs)
• Master Clock:
  • (1) PLL Mode
    • MCKI pin: 27MHz, 26MHz, 24MHz, 19.2MHz, 13.5MHz, 13MHz, 12.288MHz, 12MHz, 11.2896MHz
    • LRCK pin: 1fs
    • BICK pin: 32fs, 64fs, 128fs(TDM), 256fs(TDM)
  • (2) External Clock Mode (MCKI pin)
    • Slave mode: 256fs, 384fs, 512fs or 768fs (Normal Speed), 256fs or 384fs (Double Speed), 128fs or 192fs (Quad Speed)
    • Master mode: 256fs or 512fs (Normal Speed), 256fs (Double Speed), 128fs (Quad Speed)
• Power Supply:
  • AVDD = 2.4 to 3.6V (typ. 3.3V)
  • TVDD = 1.7 to 3.6V (typ. 1.8V)
• Power Supply Current: 18mA(fs=48kHz)
• Ta = -40 to 105°C
• Package: 28-pin QFN (0.5mm pitch)