PCM1808-Q1 Automotive 99dB SNR Stereo ADC With Single-Ended Inputs | TI.com

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Automotive 99dB SNR Stereo ADC With Single-Ended Inputs



The PCM1808-Q1 is high-performance, low-cost, single-chip, stereo analog-to-digital converter with single-ended analog voltage input. The PCM1808-Q1 uses a delta-sigma modulator with 64-times oversampling and includes a digital decimation filter and high-pass filter that removes the dc component of the input signal. For various applications, the PCM1808-Q1 supports master and slave mode and two data formats in serial audio interface.

The PCM1808-Q1 supports the power-down and reset function by means of halting the system clock.

The PCM1808-Q1 is suitable for wide variety of cost-sensitive consumer applications where good performance and operation with a 5-V analog supply and 3.3-V digital supply is required. The PCM1808-Q1 is fabricated using a highly advanced CMOS process and is available in a small, 14-pin TSSOP package.


  • Qualified for Automotive Applications
  • 24-Bit Delta-Sigma Stereo A/D Converter
  • Single-Ended Voltage Input: 3 Vp-p
  • High Performance:
    • THD + N: –93 dB (Typical)
    • SNR: 99 dB (Typical)
    • Dynamic Range: 99 dB (Typical)
  • Oversampling Decimation Filter:
    • Oversampling Frequency: ×64
    • Pass-Band Ripple: ±0.05 dB
    • Stop-Band Attenuation: –65 dB
    • On-Chip High-Pass Filter: 0.91 Hz (48 kHz)
  • Flexible PCM Audio Interface
    • Master/Slave Mode Selectable
    • Data Formats: 24-Bit I2S, 24-Bit Left-Justified
  • Power Down and Reset by Halting System Clock
  • Analog Antialias LPF Included
  • Sampling Rate: 8 kHz–96 kHz
  • System Clock: 256 fS, 384 fS, 512 fS
  • Dual Power Supplies:
    • 5-V for Analog
    • 3.3-V for Digital
  • Package: 14-Pin TSSOP


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
PCM1808-Q1 Order now 2     2     I2S
H/W     96     99     Automotive    
PCM1804-Q1 Order now 2     2     DSP
H/W     192     112     Automotive    
PCM1864-Q1 Order now 4     8     I2S
I2C     192     103     Automotive    
PCM1865-Q1 Order now 4     8     I2S
I2C     192     110     Automotive