CS8427-CSZ

Audio Special Purpose Overview

The CS8427-CSZ is a stereo digital audio transceiver from Cirrus Logic designed for AES3 and S/PDIF-compatible applications. It operates with a +5.0 V analog supply (VA+) and supports +3.3 V or +5.0 V digital interface voltages (VL+). The device features flexible 3-wire serial digital I/O ports and adjustable sample rates up to 96 kHz. It includes low-jitter clock recovery mechanisms and comprehensive control via a 4-wire microcontroller port supporting SPI and I²C interfaces. The component is housed in a 28-pin SOIC package and functions within an operating temperature range of -10°C to +70°C.

Audio Special Purpose Feature Summary

• Complete EIAJ CP1201, IEC-60958, AES3, and S/PDIF-compatible transceiver functionality
• Low-jitter clock recovery mechanism for clean recovered clocks from incoming AES3 streams
• On-chip Channel Status and User Data buffer memories permitting block reads and writes
• Supports Microcontroller and Standalone modes with pin and software access to channel status

Audio Special Purpose Procurement Notes

Verify the specific suffix 'CSZ' indicates lead-free compliance as per Cirrus Logic ordering conventions. Confirm that the 28-SOIC package dimensions match the target PCB footprint. Ensure the design accommodates the required +5.0 V analog supply and compatible digital logic levels for the VL+ pin. Check for current availability as this series may have limited stock or end-of-life status depending on the distributor.

Audio Special Purpose Selection Notes

Select the CS8427-CSZ when AES3 or S/PDIF transmission and reception are required alongside serial audio I/O. Choose this part over the TSSOP variant if through-hole or larger surface-mount spacing is preferred. Ensure the system design supports the necessary PLL filter components for jitter attenuation if locking to RXP/RXN inputs. Verify that the control interface requirements align with either SPI or I²C protocols supported by the device.

Audio Special Purpose Part Context

The CS8427 belongs to Cirrus Logic's family of digital audio interface transceivers. The '-CS' designation typically denotes the commercial temperature grade (-10°C to +70°C), while the 'Z' suffix generally signifies lead-free packaging. This component integrates both transmitter and receiver capabilities, simplifying board designs by replacing separate encoder and decoder chips.