Texas Instruments PCM1803A
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 64and 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.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 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.