CS4220-KSZ Equivalent & Substitute Parts

Part Overview

The CS4220-KSZ is a stereo audio interface codec manufactured by Cirrus Logic Inc., designed for 24-bit serial audio applications in a 28-SSOP surface mount package. This component integrates 2 ADCs and 2 DACs with Sigma Delta modulation, operating across analog and digital supply voltages of 4.75V to 5.25V. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

CS4220-KSZ

Cirrus Logic Inc.In Stock: 50855CS4220-KSZ Datasheet

Current PartRFQ

CS4272-CZZ

Cirrus Logic Inc.In Stock: 112181CS4272-CZZ Datasheet

MFR RecommendedRFQ

CS4272-DZZ

Cirrus Logic Inc.In Stock: 2273CS4272-DZZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS4220-KSZ is determined by the following critical parameters:

• Data Interface Type: The CS4220-KSZ operates with a Serial data interface. Substitute parts must maintain Serial interface compatibility to ensure protocol alignment with existing host controllers and signal processing chains.
• Resolution and ADC/DAC Configuration: 24-bit resolution with 2 ADCs and 2 DACs is the functional requirement. Substitute parts must match this specification.
• Sigma Delta Modulation: The presence of Sigma Delta modulation in the original part is a core architectural feature that must be preserved in substitutes.
• Supply Voltage Compatibility: Both analog and digital supply voltage ranges must overlap with the original specification (4.75V ~ 5.25V minimum requirement).
• Package and Mounting: Surface mount technology with compatible pinout and thermal characteristics.

The identified substitutes, CS4272-DZZ and CS4272-CZZ, are Cirrus Logic codec variants that share the core stereo audio interface architecture. CS4272-DZZ maintains Serial data interface compatibility with the CS4220-KSZ, while CS4272-CZZ operates with PCM data interface and represents a functional alternative for applications where PCM protocol is acceptable.

Parameter Comparison

Engineering Selection Recommendations

CS4272-DZZ is the primary substitute for the CS4220-KSZ. Both parts maintain Serial data interface protocol, ensuring direct compatibility with existing host controller implementations. The CS4272-DZZ provides improved dynamic range performance (114 dB versus 100 dB) and extended operating temperature range (-40°C to 85°C versus -10°C to 70°C). The digital supply voltage range is expanded to 3.1V ~ 5.25V, providing greater design flexibility. Package transition from 28-SSOP to 28-TSSOP requires PCB layout modification due to different body width (5.30mm to 4.40mm). Both parts are REACH Unaffected and classified under ECCN EAR99. The CS4272-DZZ carries ROHS3 compliance certification.

CS4272-CZZ is an alternative substitute applicable only to designs where PCM data interface protocol is acceptable or where protocol conversion is implemented. This part shares identical resolution, ADC/DAC configuration, and supply voltage specifications with CS4272-DZZ but operates with PCM rather than Serial interface. Selection of CS4272-CZZ requires verification that the host controller supports PCM protocol or that appropriate interface conversion circuitry is available.

Frequently Asked Questions (FAQ)

Q: Can CS4272-DZZ directly replace CS4220-KSZ without firmware or software changes?

A: CS4272-DZZ maintains Serial data interface compatibility with CS4220-KSZ, eliminating the need for host controller firmware modifications. However, PCB layout changes are required due to package transition from 28-SSOP to 28-TSSOP. Pin-to-pin compatibility must be verified against detailed datasheets before implementation.

Q: What is the primary difference between CS4272-DZZ and CS4272-CZZ?

A: The primary difference is data interface protocol. CS4272-DZZ operates with Serial interface, matching the CS4220-KSZ protocol. CS4272-CZZ operates with PCM interface. Both parts share identical 24-bit resolution, 2 ADC/2 DAC configuration, and dynamic range specifications (114 dB).

Q: Does the package change from 28-SSOP to 28-TSSOP affect thermal performance?

A: The 28-TSSOP package (0.173" width) is narrower than the 28-SSOP package (0.209" width). Thermal performance differences depend on PCB layout, copper area allocation, and thermal via implementation. Detailed thermal analysis is required for applications with stringent thermal requirements.

Q: Are CS4272-DZZ and CS4272-CZZ RoHS compliant?

A: Both CS4272-DZZ and CS4272-CZZ are ROHS3 compliant. The original CS4220-KSZ RoHS status is not specified in available documentation.

Q: What is the impact of the expanded operating temperature range in CS4272-DZZ?

A: CS4272-DZZ operates across -40°C to 85°C, compared to CS4220-KSZ at -10°C to 70°C. This expanded range accommodates industrial and automotive applications requiring extended temperature performance. Applications operating within the original -10°C to 70°C range experience no performance impact.

Q: How does the digital supply voltage range expansion affect circuit design?

A: CS4272-DZZ digital supply voltage range (3.1V ~ 5.25V) is broader than CS4220-KSZ (4.75V ~ 5.25V). This allows operation with lower digital supply voltages, enabling integration with 3.3V digital logic systems. Existing designs operating at 5V experience no impact.