CS5345-CQZ

ADCs/DACs - Special Purpose Overview

The CS5345-CQZ 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 multi-bit delta-sigma modulator to perform A/D conversion at sample rates up to 192 kHz with 24-bit resolution. The device features a 6:1 stereo input multiplexer for selecting between line-level and microphone-level inputs, including dedicated microphone inputs with a +32 dB gain stage. Key performance metrics include a dynamic range of 104 dB and -95 dB THD+N. It supports selectable serial audio interface formats such as Left-Justified and I²S, operates on +3.3 V to +5 V supplies, and interfaces directly with logic levels ranging from 1.8 V to 5 V.

ADCs/DACs - Special Purpose Feature Summary

• Integrates a 6:1 stereo input multiplexer and a PGA with ±12 dB gain adjustment in 0.5 dB steps.
• Delivers 104 dB dynamic range and -95 dB THD+N for high-fidelity audio conversion.
• Supports sampling rates up to 192 kHz with selectable Left-Justified or I²S digital output formats.
• 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-end consumer audio systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix '-CQZ' against current manufacturer documentation to confirm package type and commercial temperature grade specifications. Confirm availability status as distribution data may indicate limited stock or end-of-life conditions for this component.

ADCs/DACs - Special Purpose Selection Notes

Select the CS5345-CQZ when a stereo ADC with integrated analog front-end switching and amplification is required. Ensure the design accommodates the 48-pin LQFP footprint and provides appropriate power supply decoupling for the +3.3 V to +5 V analog and digital rails. Verify that the host system supports the required serial clock and control port interfaces.

ADCs/DACs - Special Purpose Part Context

The CS5345 belongs to Cirrus Logic's family of high-performance audio ADCs. It is pin-compatible with the CS4245, facilitating potential design upgrades or replacements within existing hardware architectures that utilize similar form factors and interface requirements.

ADCs/DACs - Special Purpose Replacement Considerations

The CS4245 is documented as pin-compatible with the CS5345. Verify functional equivalence and register compatibility before substitution. Other members of the CS5345 series, such as CS5345-CQZR, offer different packaging options like tape and reel.