CS3310-KSZ

Audio Special Purpose Overview

The CS3310-KSZ is a complete stereo digital volume control designed specifically for audio systems. It features a 16-bit serial interface that controls two independent low-distortion audio channels. The device includes a set of well-matched resistors and a low-noise active output stage capable of driving loads up to 100 pF. It operates from a single +5 V supply (analog and digital) with an input/output voltage range of ±3.75 V.

Audio Special Purpose Feature Summary

• Stereo Digital Volume Control: Two independent channels with 0.5 dB resolution steps.
• Wide Adjustable Range: -95.5 dB attenuation to +31.5 dB gain.
• Low Distortion & Noise: Typical THD+N of 0.001% and dynamic range of 116 dB.
• Noise-Free Transitions: Zero-crossing detection prevents audible glitches during level changes.

Audio Special Purpose Applications

• High-fidelity audio systems
• Multi-channel audio processing
• Professional audio equipment

Audio Special Purpose Procurement Notes

The CS3310-KSZ is a discontinued product. Verify availability through authorized distributors or secondary markets. Ensure the package type matches the required 16-SOIC footprint for PCB layout.

Audio Special Purpose Selection Notes

Select this component for applications requiring precise stereo volume control with low distortion. Ensure the system design accommodates a single +5 V supply. Verify that the source impedance is kept below 600 ohms to maintain optimal performance and avoid distortion caused by ESD protection diode capacitance.

Audio Special Purpose Part Context

The CS3310-KSZ is part of the CS3310 family of stereo digital volume controls. It is designed for integration into complex audio systems where multiple devices may be daisy-chained using the serial data output pin. The device simplifies multi-channel configuration by allowing simultaneous updates across chained units via a single serial data line.

Audio Special Purpose Replacement Considerations

The CS3310-KSZ is marked as 'Obsolete' or 'End-of-Life' by Cirrus Logic. When considering alternatives, ensure compatibility with the 3-wire serial interface, supply voltage requirements (+5V), and package dimensions. No direct public substitute is officially confirmed in current documentation; consult manufacturer for current replacements.

Audio Special Purpose FAQ

How does the CS3310 handle volume changes to prevent audible artifacts?

The device implements zero-crossing detection to ensure that gain or attenuation changes occur only when the signal crosses zero, eliminating glitches. If two zero crossings are not detected within 18 ms, the new setting is implemented immediately.

What is the maximum load capacitance the outputs can drive?

The output buffer can drive a load capacitance of up to 100 pF while maintaining specified performance characteristics.

Can multiple CS3310 devices be controlled simultaneously?

Yes, the device supports daisy-chaining. Multiple CS3310s can be connected in series, and volume settings can be loaded simultaneously by holding the Chip Select (CS) pin low for 16 x N clock pulses, where N is the number of devices in the chain.