Surround Sound CODEC

The CS4227 is a single-chip CODEC providing three A/D converters and six D/A converters using Delta-Sigma conversion techniques. This 5V device also contains volume controls that are independently selectable for each of the six D/A channels. Applications include Dolby Pro-Logic, THX, and Dolby Digital AC-3 home theater systems, DSP-based car audio systems, and other multi-channel applications.

• 3 20-bit A/D converters
• 6 20-bit D/A converters
• 108 dB D/A converter signal-to-noise ratio (EIAJ)
• Programmable input gain and output attenuation
• On-chip anti-aliasing and output smoothing filters
• De-emphasis for 32 kHz, 44.1 kHz, and 48 kHz
• Package: 44-pin TQFP