CS3308K-CQZ

Audio Special Purpose Overview

The CS3308K-CQZ is an 8-channel digitally controlled analog volume controller from Cirrus Logic. It provides a total adjustable range of 118 dB, spanning -96 dB to +22 dB in 0.5 dB steps (not 0.25 dB). Key electrical specifications include typical -112 dB THD+N and 123 dB dynamic range. The device operates from ±5 V analog supplies and a +3.3 V digital supply. It features configurable zero-crossing detection for glitch-free transitions and supports I²C or SPI serial control interfaces.

Audio Special Purpose Feature Summary

• 8 Independently Controllable Channels with 3 Configurable Master Volume and Muting Controls
• -112 dB Typical THD+N and 123 dB Dynamic Range
• Zero-Crossing Detection with Programmable Time-Out for Noise-Free Level Transitions
• Supports I²C and SPI Communication with Independent Control of up to 128 Devices
• Adjustable Gain Range: -96 dB to +22 dB in 0.5 dB Steps

Audio Special Purpose Applications

• High-End Audio Systems
• Multi-Zone Audio Distribution
• Home Theater Processors
• Professional Audio Mixing Consoles

Audio Special Purpose Procurement Notes

Verify the specific suffix K against the manufacturer's official documentation to confirm package type and temperature grade variations. Ensure the ordering information matches the required commercial grade (-10°C to 70°C) and LQFP packaging details provided in the datasheet.

Audio Special Purpose Selection Notes

Select this component for applications requiring precise analog volume control with low distortion. Ensure the system design accommodates ±5 V analog and +3.3 V digital power rails. Verify that the host controller supports either I²C or SPI protocols for configuration.

Audio Special Purpose Part Context

The CS3308 series includes variants such as CS3308-CQZ and CS3308-DQZ. These parts share the same core functionality but may differ in package options or temperature ranges. The CS3308K-CQZ specifically denotes the commercial grade version in the 48-LQFP package.

Audio Special Purpose Replacement Considerations

Direct replacements within the Cirrus Logic portfolio include CS3308-CQZ and CS3308-DQZ. Verify pin compatibility and electrical specifications before substitution.

Audio Special Purpose FAQ

What is the maximum gain capability of the CS3308?

The CS3308 provides a maximum gain of +22 dB.

How many devices can be controlled on a single bus?

Up to 128 CS3308 devices can be independently controlled on a shared 2-wire I²C or 3-wire SPI control bus.