99dB SNR Stereo ADC with Single-Ended Inputs - PCM1808


99dB SNR Stereo ADC with Single-Ended Inputs


The PCM1808 is high-performance, low-cost, single-chip, stereo analog-to-digital converter with single-ended analog voltage input. The PCM1808 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 supports master and slave mode and two data formats in serial audio interface.

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

The PCM1808 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 is fabricated using a highly advanced CMOS process and is available in a small, 14-pin TSSOP package.


  • 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
    • DVD Recorder
    • Digital TV
    • AV Amplifier/Receiver
    • MD Player
    • CD Recorder
    • Multitrack Receiver
    • Electric Musical Instrument

System Two, Audio Precision are trademarks of Audio Precision, Inc.
All other trademarks are the property of their respective owners.

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Parametrics Compare all products in Audio ADC

# ADCs
# Inputs / # Outputs
Resolution (Bits)
Control Interface
Digital Audio Interface
Operating Temperature Range (C)
Approx. Price (US$)
PCM1808 PCM1802 PCM1803A PCM1807
2     2     2     2    
2 / 1     2 / 1     2 / 1     2 / 1    
24     24     24     24    
H/W     H/W     H/W     SPI    
Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85    
14TSSOP     20SSOP     20SSOP     14TSSOP    
0.80 | 1ku     1.58 | 1ku     1.05 | 1ku     0.90 | 1ku    

Other qualified versions of PCM1808

Version Part Number Definition
Automotive PCM1808-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

Companion parts

Part # Name Product Family Comments
TAS5727   25-W Digital Audio Power Amplifier with EQ and 2-Band DRC   SPEAKER AMPLIFIER AND MODULATOR - MID/HIGH-POWER AMPLIFIER    25W Digital Input Amplifier accepts I2S output from PCM1808  
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