Description
The CS3318 is an 8-channel digitally controlled analog volume control designed specifically for high-end audio systems. It features a comprehensive I²C/SPI serial control port for easy device and volume configuration.
The CS3318 includes arrays of well-matched resistors and complementary low-noise active output stages. A total adjustable range of 118 dB, in ¼ dB steps, is spread evenly over 96 dB of attenuation and 22 dB of gain.
The CS3318 implements configurable zero-crossing detection to provide glitch-free volume-level changes.

FEATUREs
♦ Complete Analog Volume Control
   – 8 Independently Controllable Channels
   – 3 Configurable Master Volume and Muting Controls
♦ Wide Adjustable Volume Range
   – -96 dB to +22 dB in ¼ dB Steps
♦ Low Distortion & Noise
   – -112 dB THD+N
   – 127 dB Dynamic Range
♦ Noise-Free Level Transitions
   – Zero-Crossing Detection with Programmable Time-Out
♦ Low Channel-to-Channel Crosstalk
   – 120 dB Inter-Channel Isolation
♦ Comprehensive Serial Control Port
   – Supports I²C® and SPITM Communication
   – Independent Control of up to 128 Devices on a Shared 2-Wire I²C or 3-Wire SPI Control Bus
   – Supports Individual and Grouped Control of all CS3318 Devices on the I²C or SPI Control Bus
♦ Flexible Power Supply Voltages
   – ±8 V to ±9 V Analog Supply
   – +3.3 V Digital Supply