CS5344-DZZ

ADCs/DACs - Special Purpose Overview

The CS5344-DZZ is an automotive-grade, 24-bit stereo audio analog-to-digital converter (ADC) from Cirrus Logic. It utilizes a multi-bit Delta-Sigma architecture to support sample rates up to 108 kHz with a typical dynamic range of 98 dB at 5 V and THD+N of -92 dB. The device features a low-latency digital filter and a high-pass filter for DC offset removal. It operates on a single +3.3 V or +5 V supply with power consumption under 40 mW. The CS5344 outputs Left-Justified serial audio data and supports both master and slave clock modes within a 10-pin TSSOP package rated for -40°C to +105°C.

ADCs/DACs - Special Purpose Feature Summary

• Automotive-grade (-DZZ suffix) operation from -40°C to +105°C
• Supports Left-Justified audio format output
• Slave mode speed auto-detect for sample rates from 4 kHz to 108 kHz
• High-impedance sampling network eliminates external op-amps

ADCs/DACs - Special Purpose Applications

• Automotive audio systems
• Set-top boxes
• DVD recorders
• A/V receivers

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation. The 'DZZ' designation indicates the Automotive grade variant with an extended temperature range of -40°C to +105°C housed in a 10-TSSOP rail package. Confirm that the system requires the Left-Justified interface provided by the CS5344 rather than the I²S format found in the CS5343 model.

ADCs/DACs - Special Purpose Selection Notes

Select the CS5344 when a Left-Justified serial interface is required instead of I²S. Ensure the design accommodates the single VA power supply ranging from 3.1 V to 5.25 V. For applications requiring standard I²S compatibility, consider the CS5343 model. Verify that the source impedance remains below 2.5 kΩ to maintain optimal THD+N performance.

ADCs/DACs - Special Purpose Part Context

The CS5344 is part of the CS5343/4 family of complete analog-to-digital converters designed for digital audio systems. While functionally identical to the CS5343 regarding conversion performance and architecture, the CS5344 is specifically configured to output serial data in the Left-Justified audio format. Both devices share the same pinout and electrical characteristics.

ADCs/DACs - Special Purpose Replacement Considerations

The CS5343-DZZ serves as a functional substitute if the application can accommodate the I²S audio format instead of Left-Justified. Other CS5344 variants include the commercial grade CS5344-CZZ and tape-and-reel versions CS5344-CZZR and CS5344-DZZR.

ADCs/DACs - Special Purpose FAQ

How does the CS5344 determine its operating speed in Slave Mode?

In Slave Mode, the CS5344 automatically detects the input clock frequencies to select between Single-Speed and Double-Speed modes, supporting sample rates from 4 kHz to 108 kHz without manual configuration.

What is the difference between the CS5344 and CS5343 models?

The primary difference is the serial audio interface format. The CS5344 outputs Left-Justified audio data, whereas the CS5343 outputs I²S format. All other electrical specifications and pinouts are identical.

Does the CS5344 require an external anti-alias filter?

No, the internal digital filter removes the need for an external anti-alias filter. However, an external RC network is recommended on the analog inputs to filter noise at the modulator sampling frequency.