CS5345-CQZR

ADCs/DACs - Special Purpose Overview

The CS5345-CQZR is a stereo audio analog-to-digital converter (ADC) from Cirrus Logic, housed in a 48-pin LQFP package. It integrates an analog multiplexer, programmable gain amplifier (PGA), and delta-sigma modulator to perform 24-bit A/D conversion at sample rates up to 192 kHz. The device features a 6:1 stereo input multiplexer for selecting between line-level and microphone-level inputs, with the microphone path including a +32 dB gain stage. It supports selectable serial audio interface formats, including Left-Justified and I²S, and operates on nominal +3.3 V to +5 V power supplies.

ADCs/DACs - Special Purpose Feature Summary

• Integrates a 6:1 stereo input multiplexer and a PGA with ±12 dB gain range in 0.5 dB steps.
• Delivers 104 dB dynamic range and -95 dB THD+N for line-level inputs.
• Supports sampling rates up to 192 kHz with selectable Left-Justified or I²S digital interfaces.
• Includes dedicated microphone inputs with +32 dB gain and low-noise bias supply.

ADCs/DACs - Special Purpose Applications

• Professional audio recording equipment
• Broadcasting and mixing consoles
• High-fidelity consumer audio systems

ADCs/DACs - Special Purpose Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific CQZR suffix indicates tape-and-reel packaging if required for automated assembly. Check current lifecycle status as older audio ICs may be subject to discontinuation or limited availability.

ADCs/DACs - Special Purpose Selection Notes

Select this component for applications requiring high-resolution stereo digitization with integrated signal conditioning. Ensure the design accommodates the 48-pin LQFP footprint and provides appropriate decoupling for the separate analog and digital power domains. Verify that the host processor supports the required serial clock rates and control interface protocols.

ADCs/DACs - Special Purpose Part Context

This part belongs to the CS5345 family of stereo audio ADCs. It is pin-compatible with the CS4245, facilitating potential upgrades or replacements in existing designs. The CDB5345 evaluation board is available for development purposes.

ADCs/DACs - Special Purpose Replacement Considerations

The CS4245 is documented as pin-compatible. Verify functional equivalence regarding register maps and performance specifications before substitution.

ADCs/DACs - Special Purpose FAQ

What is the maximum sampling rate supported by the CS5345?

The device supports sampling rates up to 192 kHz.

How does the device handle microphone inputs?

It includes dedicated stereo microphone inputs with a fixed +32 dB gain stage and a low-noise bias supply.

What digital interface formats are available?

The CS5345 supports selectable Left-Justified (up to 24-bit) and I²S (up to 24-bit) formats.