CS4271-DZZR Equivalent & Substitute Parts

Part Overview

The CS4271-DZZR is a stereo audio interface codec manufactured by Cirrus Logic Inc., designed for 24-bit serial audio applications. This device integrates two analog-to-digital converters (ADCs) and two digital-to-analog converters (DACs) with sigma-delta modulation architecture. The part is classified as obsolete, necessitating identification of equivalent substitute components for ongoing system support and new design considerations.

Substiute Parts

CS4271-DZZR

Cirrus Logic Inc.In Stock: 8464CS4271-DZZR Datasheet

Current PartRFQ

CS4271K-DZZR

Cirrus Logic Inc.In Stock: 4828CS4271K-DZZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS4271-DZZR is determined by strict equivalence across the following critical parameters:

• Resolution: 24-bit audio resolution
• ADC/DAC Configuration: 2 ADCs and 2 DACs
• Data Interface: Serial interface architecture
• Dynamic Range: ADC minimum 108 dB, DAC minimum 114 dB
• Supply Voltage Ranges: Analog 4.75V–5.25V, Digital 3.1V–5.25V
• Operating Temperature Range: -40°C to 85°C
• Package Type: 28-TSSOP surface mount
• Compliance: ROHS3 compliant, REACH unaffected

The CS4271K-DZZR meets all these criteria and is identified as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The CS4271K-DZZR is the manufacturer-recommended substitute for the CS4271-DZZR. Both components maintain identical electrical specifications, package geometry, and compliance certifications. The CS4271K-DZZR is designated "Not For New Designs," indicating limited future availability. For applications currently using the CS4271-DZZR, the CS4271K-DZZR provides direct functional equivalence. Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for industrial and consumer audio interface applications.

Frequently Asked Questions (FAQ)

Q: Can the CS4271K-DZZR replace the CS4271-DZZR in existing designs?

A: Yes. Both parts share identical electrical specifications, including 24-bit resolution, 2/2 ADC/DAC configuration, dynamic range performance, supply voltage ranges, and operating temperature limits. The 28-TSSOP package geometry is identical, enabling direct board-level substitution without layout modifications.

Q: What is the difference between the CS4271-DZZR and CS4271K-DZZR?

A: The primary difference is product status. The CS4271-DZZR is classified as obsolete, while the CS4271K-DZZR is designated "Not For New Designs." All electrical and mechanical parameters remain equivalent. The CS4271K-DZZR packaging is specified as Tape & Reel (TR), whereas the CS4271-DZZR packaging is unspecified.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain ROHS3 compliance and REACH unaffected status. Moisture sensitivity level (MSL 3, 168 hours) is identical for both components.

Q: What supply voltages are required for operation?

A: Analog supply voltage range is 4.75V to 5.25V. Digital supply voltage range is 3.1V to 5.25V. Both the CS4271-DZZR and CS4271K-DZZR operate within these identical ranges.

Q: Is the 28-TSSOP package footprint identical between both parts?

A: Yes. Both components use the 28-TSSOP package with 0.173-inch lead spacing and 4.40mm width. No PCB redesign is required for substitution.