PCM1804-Q1 Automotive 112dB SNR Stereo ADC With Differential Inputs | TI.com

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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,
      fS = 48 kHz
  • Sampling Rate up to 192 kHz
  • System Clock: 128 fS, 256 fS, 384 fS,
    512 fS, or 768 fS
  • 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 fS


Compare all products in Audio ADCs Email Download to Excel
Part number Order ADC channels Analog inputs Digital audio interface Control interface Sampling rate (Max) (kHz) ADC SNR (Typ) (dB) Rating
PCM1804-Q1 Order now 2     2     DSP
H/W     192     112     Automotive    
PCM1801 Samples not available 2     2     L
H/W     48     93     Catalog    
PCM1808-Q1 Order now 2     2     I2S
H/W     96     99     Automotive    
PCM1864-Q1 Order now 4     8     I2S
I2C     192     103     Automotive    
PCM1865-Q1 Order now 4     8     I2S
I2C     192     110     Automotive