CS53L21-CNZ

ADCs/DACs - Special Purpose Overview

The CS53L21-CNZ is a low-power, stereo analog-to-digital converter (ADC) from Cirrus Logic. It features a 24-bit multibit delta-sigma architecture with a dynamic range of 98 dB (A-weighted) and -88 dB THD+N. The device supports sample rates from 4 kHz to 96 kHz and operates on variable power supplies: 1.8–2.5 V for analog/digital cores and 1.8–3.3 V for the interface logic. Power consumption is 8.72 mW for stereo record at 1.8 V. It includes integrated mic preamps (+16/+32 dB), a programmable PGA, ALC, noise gate, and digital volume control. The component is housed in a 32-pin QFN package.

ADCs/DACs - Special Purpose Feature Summary

• High-performance audio conversion with 98 dB dynamic range and -88 dB THD+N.
• Integrated signal chain including dual mic inputs, +16/+32 dB mic preamps, and programmable PGA.
• Advanced digital processing with programmable ALC, noise gate, and independent channel volume controls.
• Flexible control via I²C/SPI software mode or standalone hardware mode.

ADCs/DACs - Special Purpose Applications

• Portable audio players
• Digital voice recorders
• Voice recognition systems
• Audio/video capture cards

ADCs/DACs - Special Purpose Procurement Notes

Verify the commercial grade suffix '-CNZ' corresponds to the specified operating temperature range of -10°C to +70°C. Confirm that the 32-pin QFN package matches the target PCB footprint. Ensure supply voltages align with the device's 1.8–2.5 V core and 1.8–3.3 V interface requirements.

ADCs/DACs - Special Purpose Selection Notes

Select this model for applications requiring low power consumption and high integration. The CS53L21 eliminates external components by integrating mic bias, preamps, and PGA. Consider the Automotive grade (-DNZ) if operation below -10°C is required. Verify interface compatibility with I²C, SPI, or Hardware Mode configurations.

ADCs/DACs - Special Purpose Part Context

The CS53L21 is part of Cirrus Logic’s low-power audio ADC family, designed for portable devices. It succeeds earlier models by offering higher integration and lower power usage. The 'CNZ' suffix denotes the Commercial temperature grade and lead-free packaging status within the product line.

ADCs/DACs - Special Purpose Replacement Considerations

For direct pin-compatible replacements, consult Cirrus Logic documentation for updated series members. No specific substitute part numbers are confirmed in the provided source material.