Audio Codec 1ADC /2 DAC 24-Bit 48-Pin TQFP

The WM8594 is a high performance multi-channel audio codec with flexible input/output selection and digital and analog volume control. Features include a 24-bit stereo ADC with digital gain control, two 24-bit DACs with independent volume control and clocking, and a range of input/output channel selection options with analog volume control for flexible routing within current and future audio systems.

• Multi-channel codec with 5 stereo input selector and 3 stereo output selector
• 4-channel DAC, 2-channel ADC
• 5x2Vrms stereo input selector with 3x2 channel analog bypass to output selector
• 3x2Vrms stereo output selector
• Stereo headphone driver
• Audio performance
  • DAC: 100dB SNR typical (‘A’ weighted @ 48kHz)
  • DAC: -87dB THD typical
  • ADC: 96dB SNR typical (‘A’ weighted @ 48kHz)
  • ADC: -80dB THD typical
• Independent sampling rate for ADC and DACs
• Independent sampling rate for DAC1 and DAC2
• DACs sampling frequency 32kHz – 192kHz
• ADC sampling frequency 32kHz – 96kHz
• DAC digital volume control +12dB to -100dB in 0.5dB steps
• ADC digital volume control from +30dB to -97dB in 0.5dB steps
• ADC input analog boost control, selectable from 0dB, +3dB, +6dB and +12dB
• Output analog volume control +6dB to -73.5dB in 0.5dB steps with zero cross or soft ramp to prevent pops and clicks
• Headphone drive capability on one stereo output with jack detect
• 2 and three-wire serial control interface with readback and hardware reset, mute and powerdown pins
• Independent master or slave clocking modes
• Programmable format audio data interface modes
  • I²S, LJ, RJ, DSP
• 3.3V / 9V analog, 3.3V digital supply operation
• 48-lead TQFP package