CS43L42-KZZ

ADCs/DACs - Special Purpose Overview

The CS43L42-KZZ is a low-voltage stereo digital-to-analog converter (DAC) with an integrated headphone amplifier, manufactured by Cirrus Logic. It operates on a single supply voltage ranging from 1.8 V to 3.3 V and features 24-bit resolution with sample rates up to 96 kHz. The device utilizes delta-sigma modulation architecture and includes on-chip digital volume control, bass/treble boost, peak signal limiting, and de-emphasis filters. It provides both line-level outputs and a headphone amplifier capable of delivering up to 25 mW into a 16 Ω load at 3.3 V. The component is housed in a 24-pin TSSOP package and supports I2C or SPI control interfaces.

ADCs/DACs - Special Purpose Feature Summary

• 24-bit conversion with 96 kHz sample rate and 96 dB dynamic range at 3 V supply
• Integrated headphone amplifier delivering up to 25 mW RMS into 16 Ω loads
• Digital volume control with 96 dB attenuation in 1 dB steps
• On-chip digital bass and treble boost with selectable corner frequencies

ADCs/DACs - Special Purpose Applications

• Portable CD players
• MP3 players
• MiniDisc (MD) players
• Portable playback systems requiring low power consumption

ADCs/DACs - Special Purpose Procurement Notes

Verify the KZZ suffix indicates lead-free compliance when sourcing. Confirm the 24-pin TSSOP package availability matches specific manufacturing requirements. Check for preliminary status updates as the datasheet notes potential modifications without notice. Ensure supply voltages align with the 1.8 V to 3.3 V operating range.

ADCs/DACs - Special Purpose Selection Notes

Select this component for applications requiring high-resolution audio output with minimal external components. The integrated headphone amplifier reduces board space compared to discrete solutions. Ensure the host microcontroller supports either Two-Wire (I2C) or SPI control protocols for register configuration. Verify that the system clock frequency allows for the desired sample rate between 2 kHz and 100 kHz.

ADCs/DACs - Special Purpose Part Context

The CS43L42-KZZ is part of Cirrus Logic's CS43L4x family of low-power audio DACs. The KZZ suffix specifically denotes the lead-free version of the standard CS43L42-KZ. This family targets portable consumer electronics where battery life and physical size are critical constraints.

ADCs/DACs - Special Purpose Replacement Considerations

The CS43L41 is a similar low-power 24-bit DAC within the same family. Verify pin compatibility and feature set differences before substitution.