CS5346-CQZR

ADCs/DACs - Special Purpose Overview

The CS5346-CQZR is a stereo audio analog-to-digital converter (ADC) from Cirrus Logic, housed in a 48-pin LQFP package. It features a multi-bit delta-sigma modulator delivering 103 dB dynamic range and -95 dB THD+N at line-level inputs. The device integrates a 6:1 stereo input multiplexer, allowing selection between line-level and microphone-level signals. A programmable gain amplifier (PGA) provides ±12 dB gain adjustment with 0.5 dB steps, while dedicated microphone inputs include a +32 dB gain stage. It supports sampling rates up to 192 kHz and offers selectable 24-bit serial audio interface formats.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 6:1 stereo input multiplexer for flexible source selection
• Programmable Gain Amplifier (PGA) with ±12 dB range and zero-crossing transitions
• Dedicated microphone inputs with +32 dB gain and low-noise bias supply
• Multi-bit delta-sigma architecture achieving 103 dB dynamic range

ADCs/DACs - Special Purpose Applications

• Professional audio recording interfaces
• Broadcast mixing consoles
• High-fidelity audio digitization systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix CQZR against current manufacturer documentation to confirm package type and commercial temperature grade (-40°C to +85°C). Confirm power supply requirements: nominal 5 V analog (VA) and 3.3 V digital (VD). Check for availability as this component may be subject to discontinuation or limited stock status.

ADCs/DACs - Special Purpose Selection Notes

Select the CS5346-CQZR when pin compatibility with the CS5345 is required for drop-in replacement. Ensure the design supports separate 5 V analog and 3.3 V digital supplies. Verify that the application requires a 6:1 input mux and PGA functionality, which distinguishes it from simpler ADCs. Confirm logic level compatibility for VLC and VLS pins.

ADCs/DACs - Special Purpose Part Context

The CS5346 is part of Cirrus Logic's high-performance audio ADC family. It serves as a direct pin-compatible upgrade to the CS5345, offering enhanced input flexibility through its integrated multiplexer and programmable gain stages. The device is designed for applications requiring high dynamic range and low latency in professional audio environments.

ADCs/DACs - Special Purpose Replacement Considerations

The CS5346 is a pin-compatible drop-in replacement for the CS5345. When substituting, ensure VA is limited to nominal 5 V and VD to nominal 3.3 V. Unused test pins on the CS5345 must be handled according to the CS5346 connection guidelines.