CS8421-EZZ

Audio Special Purpose Overview

The CS8421-EZZ is a 32-bit, stereo asynchronous sample-rate converter (SRC) from Cirrus Logic Inc., housed in a 20-TSSOP package. It supports digital audio resolutions of 16, 20, 24, or 32 bits and operates with input/output sample rates up to 211 kHz. The device features a 175-dB dynamic range and -140-dB THD+N performance. It requires no external master clock or software programming for basic operation, utilizing configurable 3-wire serial ports. The EZZ suffix denotes an automotive-grade variant with an operating temperature range of -40°C to +105°C.

Audio Special Purpose Feature Summary

• High-performance 32-bit stereo SRC with 175-dB dynamic range and -140-dB THD+N
• Supports sample rates up to 211 kHz with input/output ratios from 7.5:1 to 1:8
• No external master clock or software control required; uses integrated oscillator
• Configurable 3-wire serial I/O supporting Master/Slave modes and TDM

Audio Special Purpose Applications

• DVD-R/RW, CD-R/RW, PVR, DAT recording systems
• Digital mixing consoles and high-quality D/A converters
• Effects processors and computer audio systems

Audio Special Purpose Procurement Notes

The CS8421 family has been officially discontinued (EOL). The specific 'EZZ' suffix indicates the Automotive grade (-40°C to +105°C) and 20-TSSOP package. Procurement should focus on remaining stock or authorized distributors, as new production is no longer available. Verify compatibility with system voltage requirements (+2.5V VD, +3.3V or +5.0V VL).