CS8421-CZZ

Audio Special Purpose Overview

The CS8421-CZZ is a 32-bit, stereo asynchronous sample-rate converter (SRC) manufactured by Cirrus Logic Inc. It supports input and output data resolutions of 16, 20, 24, or 32 bits with sample rates up to 211 kHz. The device operates on a +2.5 V digital core supply (VD) and a +3.3 V logic interface supply (VL). It features a linear phase FIR filter, automatic soft mute, and flexible 3-wire serial audio ports. The component is housed in a 20-TSSOP package with an operating temperature range of -10°C to +70°C.

Audio Special Purpose Feature Summary

• High-performance 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 required; integrates oscillator for standalone operation
• Configurable 3-wire serial audio I/O supporting Master/Slave modes and TDM

Audio Special Purpose Applications

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

Audio Special Purpose Procurement Notes

Verify the specific suffix 'CZZ' corresponds to the Commercial grade (-10°C to +70°C) and 20-TSSOP tube packaging. Confirm that the part status is End-of-Life (EOL) as indicated by manufacturer notices. Ensure compatibility with existing board layouts for the 20-TSSOP footprint before procurement.