CS5346-DQZ

ADCs/DACs - Special Purpose Overview

The CS5346-DQZ 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 24-bit A/D conversion at sample rates up to 192 kHz. Key electrical specifications include a dynamic range of 103 dB for line-level inputs and -95 dB THD+N. The device supports selectable 24-bit left-justified or I²S serial audio interface formats and operates with a nominal +5 V analog supply and +3.3 V digital supply.

ADCs/DACs - Special Purpose Feature Summary

• Integrates a 6:1 stereo input multiplexer and PGA with ±12 dB gain adjustment in 0.5 dB steps.
• Features a multi-bit delta-sigma modulator delivering 103 dB dynamic range and -95 dB THD+N.
• Supports sampling rates up to 192 kHz with selectable 24-bit Left-Justified or I²S output formats.
• Includes dedicated stereo microphone inputs with a +32 dB gain stage and low-noise bias supply.

ADCs/DACs - Special Purpose Applications

• High-fidelity audio recording systems requiring low noise and high dynamic range.
• Professional audio interfaces utilizing the integrated input multiplexer for multiple source selection.
• Broadcast equipment needing precise stereo ADC conversion with direct logic level interfacing.

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix DQZ against the manufacturer's current ordering information to confirm package type and availability status. As this component may be subject to lifecycle changes, consult official distributor channels for current stock levels and lead times. Ensure that the procurement documentation matches the exact part number to avoid compatibility issues with existing designs.

ADCs/DACs - Special Purpose Selection Notes

Select the CS5346-DQZ when a design requires a pin-compatible replacement for the CS5345 with enhanced features such as the integrated 6:1 multiplexer. Ensure the system power supplies align with the recommended operating conditions: VA at 5 V and VD/VLS/VLC at 3.3 V. Consider the 48-pin LQFP package constraints and thermal requirements for the commercial grade (-40°C to +85°C) operation.

ADCs/DACs - Special Purpose Part Context

The CS5346 is part of Cirrus Logic's high-performance audio ADC family, designed to replace older models like the CS5345 while offering improved integration. It serves as a drop-in replacement for applications where VA=5V and VD=3.3V, maintaining pin compatibility while adding features like the internal multiplexer and PGA. The device is intended for commercial temperature range applications.

ADCs/DACs - Special Purpose Replacement Considerations

The CS5346 is explicitly documented as a pin-compatible drop-in replacement for the CS5345 under specific voltage conditions (VA=5V, VD=3.3V). When substituting, ensure that test pins on the CS5345 are handled correctly according to the compatibility table, specifically tying NC pins to ground or leaving them unconnected as specified.