PCM1804-Q1 - Automotive 112dB SNR Stereo ADC With Differential Inputs

The PCM1804-Q1 device is a high-performance, single-chip stereo A/D converter with fully differential analog voltage input which uses a precision delta-sigma modulator and includes a linear-phase antialias digital filter and high-pass filter (HPF) that removes DC offset from the input signal. The PCM1804-Q1 device is suitable for a wide variety of mid- to high-grade consumer and professional applications, where excellent performance and 5-V analog supply and 3.3-V digital power-supply operation are required. The PCM1804-Q1 device can achieve both PCM audio and DSD format due to the precision delta-sigma modulator. The PCM1804-Q1 device is fabricated using an advanced CMOS process and is available in a small 28-pin SSOP package.

• Qualified for Automotive Applications
• AEC-Q100 Test Guidance With the Following Results:
  • Device Temperature Grade 3: –40°C to 85°C
    Ambient Operating Temperature Range
  • Device HBM ESD Classification Level H2
  • Device CDM ESD Classification Level C3B
• 24-Bit Delta-Sigma Stereo A/D Converter
• High Performance:
  • Dynamic Range: 112 dB (Typical)
  • SNR: 111 dB (Typical)
  • THD+N: –102 dB (Typical)
• High-Performance Linear Phase Antialias Digital Filter:
  • Pass-Band Ripple: ±0.005 dB
  • Stop-Band Attenuation: –100 dB
• Fully Differential Analog Input: ±2.5 V
• Audio Interface: Master- or Slave-Mode Selectable
• Data Formats: Left-Justified, I²S, Standard 24-Bit, and DSD
• Function:
  • Peak Detection
  • High-Pass Filter (HPF): –3 dB at 1 Hz,
    f_S = 48 kHz
• Sampling Rate up to 192 kHz
• System Clock: 128 f_S, 256 f_S, 384 f_S,
  512 f_S, or 768 f_S
• Dual Power Supplies:
  • 5 V for Analog
  • 3.3 V for Digital
• Power Dissipation: 225 mW
• Small 28-Pin SSOP
• DSD Output: 1 Bit, 64 f_S