1 Features
1• 24-Bit Delta-Sigma Stereo A/D Converter
• Single-Ended Voltage Input: 3 Vp-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 fS, 384 fS, 512 fS, 768 fS
• Dual Power Supplies: 5 V for Analog, 3.3 V for
Digital
• Package: 20-Pin SSOP

2 Applications
• AV Amplifier Receivers
• MD Players
• CD Recorders
• Multitrack Receivers
• Electric Musical Instruments

3 Description
The PCM1803A device is high-performance, lowcost,
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 costsensitive
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.