CS3310-KSZR

Audio Special Purpose Overview

The CS3310-KSZR is a stereo digital volume control IC manufactured by Cirrus Logic, packaged in a 16-SOIC tape and reel format. It provides independent gain/attenuation for two audio channels with a total adjustable range of 127 dB, spanning -95.5 dB attenuation to +31.5 dB gain in 0.5 dB steps. The device operates from a single +5 V supply (4.75V to 5.25V), featuring low distortion (0.001% THD+N), 116 dB dynamic range, and noise-free level transitions via zero-crossing detection. It utilizes a simple 3-wire serial interface supporting daisy-chaining.

Audio Special Purpose Feature Summary

• Stereo Digital Volume Control: Two independent channels with 0.5 dB step size resolution.
• Wide Adjustable Range: -95.5 dB attenuation to +31.5 dB gain, totaling 127 dB.
• Low Distortion & Noise: 0.001% THD+N and 116 dB dynamic range at 25°C.
• Noise-Free Transitions: Zero-crossing detection prevents audible glitches during level changes.

Audio Special Purpose Applications

• Audio Systems
• Multi-channel Audio Configurations

Audio Special Purpose Procurement Notes

The CS3310-KSZR is the lead-free, tape-and-reel variant of the CS3310 series. Verify that the system supports a single +5 V analog and digital supply, as the datasheet specifies a 4.75V to 5.25V operating range rather than ±5 V supplies.

Audio Special Purpose Selection Notes

Select this component for applications requiring precise stereo volume control with minimal external components. Ensure the system uses a single +5 V supply. Verify that the source impedance is ≤600 Ω to maintain optimal performance.

Audio Special Purpose Part Context

The CS3310-KSZR is the lead-free, tape-and-reel variant of the CS3310 stereo digital volume control. It shares identical electrical characteristics and pinout with the CS3310-KS but is optimized for surface-mount automated manufacturing processes.

Audio Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Audio Special Purpose FAQ

How does the CS3310 handle mute functions?

Muting can be achieved via hardware control using the MUTE pin or software control by loading all zeros into the volume control registers. Hardware muting disconnects internal buffers and terminates outputs with 10 kΩ resistors to ground.

What is the recommended power-up sequence?

Upon power application, the MUTE pin should be set low to initiate a power-up sequence that resets registers and performs offset calibration. The device should remain muted until supply voltages settle to ensure accurate calibration.

Can multiple CS3310 devices be connected together?

Yes, the device supports daisy-chaining via the SDATAO pin. Multiple units can be loaded from a single serial data line without complex addressing schemes by connecting the SDATAO of one device to the SDATAI of the next.