Document
CS4390
24-Bit, Stereo D/A Converter for Digital Audio
Features
l 24-Bit Conversion l 115 dB Signal-to-Noise-Ratio (EIAJ) l Complete Stereo DAC System
— 128X Interpolation Filter
— Delta-Sigma DAC
— Analog Post Filter
l 106 dB Dynamic Range l Low Clock Jitter Sensitivity l Filtered Line-Level Outputs
— Linear Phase Filtering
— Zero Phase Error Between Channels
l Adjustable System Sampling Rates
— including 32 kHz, 44.1 kHz & 48 kHz
l Digital De-emphasis for 32 kHz, 44.1 kHz, &
48 kHz
l Pin-compatible with the CS4329
I
Description
The CS4390 is a complete stereo digital-to-analog output system. In addition to the traditional D/A function, the CS4390 includes a digital interpolation filter followed by an 128X oversampled delta-sigma modulator. The modulator output controls the reference voltage input to an ultra-linear analog low-pass filter. This architecture allows for infinite adjustment of sample rate between 1 and 50 kHz while maintaining linear phase response simply b.