PCM1803A - 103dB SNR Stereo ADC With Single-Ended Inputs

The PCM1803A device is high-performance, low-cost, single-chip stereo analog-to-digital converter with single-ended analog voltage input. The PCM1803A uses a delta-sigma modulator with 64- and 128-times oversampling, and includes a digital decimation filter and high-pass filter, which removes the DC component of the input signal. For various applications, the PCM1803A supports master and slave modes and four data formats in serial interface. The PCM1803A is suitable for a wide variety of cost-sensitive consumer applications where good performance and operation from a 5-V analog supply and 3.3-V digital supply are required. The PCM1803A is fabricated using a highly-advanced CMOS process and is available in a small 20-pin SSOP package.

• 24-Bit Delta-Sigma Stereo A/D Converter
• Single-Ended Voltage Input: 3 V_p-p
• Oversampling Decimation Filter:
  • Oversampling Frequency: ×64, ×128
  • Pass-Band Ripple: ±0.05 dB
  • Stop-Band Attenuation: –65 dB
  • On-Chip High-Pass Filter: 0.84 Hz (44.1 kHz)
• High-Performance:
  • THD+N: –95 dB (Typically)
  • SNR: 103 dB (Typically)
  • Dynamic Range: 103 dB (Typically)
• PCM Audio Interface:
  • Master or Slave Mode Selectable
  • Data Formats:
    • 24-Bit Left-Justified
    • 24-Bit I²S
    • 20-, 24-Bit Right-Justified
• Sampling Rate: 16 kHz to 96 kHz
• System Clock: 256 f_S, 384 f_S, 512 f_S, 768 f_S
• Dual Power Supplies: 5 V for Analog, 3.3 V for Digital
• Package: 20-Pin SSOP