24-Bit, 105 dB CODEC with Volume Control

The CS4223/4 is a highly integrated, high performance, 24-bit, audio CODEC providing stereo A/D and stereo D/A converters using Delta-Sigma conversion techniques. The device operates from a single 5V power supply and features low power consumption and a selectable de-emphasis filter for 32, 44.1, and 48 kHz sample rates.

The CS4224 includes an analog volume control capable of 113.5 dB attenuation in 0.5 dB steps. The analog volume control architecture preserves dynamic range during attenuation. Volume control changes are implemented using a "soft" ramping or zero crossing technique.

Applications include digital effects processors, DAT, and multitrack recorders.

• 105 dB dynamic range A/D converters
• 105 dB dynamic range D/A converters
• 110 dB D/A converter signal-to-noise ratio (EIAJ)
• Analog volume control (CS4224 only)
• Differential inputs/outputs
• On-chip anti-aliasing and output smoothing filters
• De-emphasis for 32, 44.1, and 48 kHz
• Supports master and slave modes
• On-chip crystal oscillator
• 3 to 5V digital interface
• Single 5V power supply
• Package: 28-pin SSOP