WM8569SEDS/V Equivalent & Substitute Parts

Part Overview

The WM8569SEDS/V is a stereo audio codec interface manufactured by Cirrus Logic Inc., designed for 24-bit audio processing with integrated volume control in a 28-SSOP surface mount package. This component integrates dual ADCs and DACs with Sigma Delta modulation, providing 100 dB and 103 dB signal-to-noise ratios respectively. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

WM8569SEDS/V

Cirrus Logic Inc.In Stock: 905WM8569SEDS/V Datasheet

Current PartRFQ

CS4270-CZZ

Cirrus Logic Inc.In Stock: 1459CS4270-CZZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WM8569SEDS/V is determined by the following critical parameters:

Core Functional Requirements:

• 24-bit audio resolution
• Dual ADC and dual DAC configuration
• Stereo audio processing capability
• Sigma Delta modulation architecture

Electrical Compatibility Criteria:

• Signal-to-noise ratio performance (ADC minimum 100 dB, DAC minimum 103 dB)
• Analog supply voltage range compatibility (minimum 2.7V support)
• Digital supply voltage range compatibility (minimum 2.7V support)
• Operating temperature range overlap with -25°C to 85°C specification

Physical and Interface Constraints:

• Surface mount technology
• Data interface protocol compatibility (SPI or Serial)
• Package form factor (SSOP variants acceptable)

Compliance and Certification:

• RoHS compliance status
• REACH compliance status
• Moisture sensitivity level (MSL 3 or better)

The CS4270-CZZ meets the core functional requirements of 24-bit stereo audio codec operation with 2/2 ADC/DAC configuration and Sigma Delta architecture. However, specific electrical parameters differ, requiring engineering evaluation for application-specific compatibility.

Parameter Comparison

Engineering Selection Recommendations

Functional Equivalence: The CS4270-CZZ provides equivalent stereo audio codec functionality with 24-bit resolution, dual ADC/DAC configuration, and Sigma Delta architecture. Both components are manufactured by Cirrus Logic Inc. and share identical RoHS and MSL compliance ratings.

Critical Differences Requiring Evaluation:

1. Data Interface Protocol: The WM8569SEDS/V uses SPI interface, while the CS4270-CZZ uses Serial interface. System-level integration requires protocol compatibility verification.

2. Electrical Supply Ranges: The CS4270-CZZ does not support the 2.7V analog supply voltage of the WM8569SEDS/V. Minimum analog supply is 4.75V. Digital supply ranges overlap only between 3.14V and 3.6V.

3. Operating Temperature Range: The CS4270-CZZ operates from -10°C to 70°C, compared to -25°C to 85°C for the WM8569SEDS/V. Applications requiring extended low-temperature operation below -10°C or high-temperature operation above 70°C cannot use the CS4270-CZZ.

4. Package Form Factor: The 24-TSSOP package of the CS4270-CZZ differs from the 28-SSOP package of the WM8569SEDS/V, requiring PCB layout redesign and potential footprint modifications.

5. Signal-to-Noise Performance: The CS4270-CZZ specifies 105 dB dynamic range for both ADC and DAC, while the WM8569SEDS/V specifies 100 dB ADC and 103 dB DAC S/N ratios. Performance characteristics are comparable but not identical.

Substitution Feasibility: The CS4270-CZZ is a functional equivalent only for applications where the following conditions are met: analog supply voltage minimum 4.75V, digital supply voltage between 3.14V and 3.6V, operating temperature range -10°C to 70°C, Serial interface protocol compatibility, and PCB redesign for 24-TSSOP package accommodation.

Frequently Asked Questions (FAQ)

Q: Can the CS4270-CZZ directly replace the WM8569SEDS/V without PCB modifications?

A: No. The CS4270-CZZ uses a 24-TSSOP package with different pin count and spacing compared to the 28-SSOP package of the WM8569SEDS/V. PCB layout redesign is required.

Q: What is the primary difference between these two codecs?

A: The primary differences are data interface protocol (SPI vs. Serial), electrical supply voltage ranges, operating temperature range, and package form factor. Both provide equivalent 24-bit stereo audio codec functionality with dual ADC/DAC configuration.

Q: Is the CS4270-CZZ suitable for low-voltage applications requiring 2.7V analog supply?

A: No. The CS4270-CZZ requires minimum 4.75V analog supply voltage. Applications requiring 2.7V analog supply cannot use this substitute.

Q: What are the temperature limitations of the CS4270-CZZ compared to the WM8569SEDS/V?

A: The CS4270-CZZ operates from -10°C to 70°C, while the WM8569SEDS/V operates from -25°C to 85°C. The CS4270-CZZ cannot be used in applications requiring operation below -10°C or above 70°C.

Q: Are both components RoHS compliant?

A: Yes. The WM8569SEDS/V is RoHS Compliant, and the CS4270-CZZ is ROHS3 Compliant. Both meet RoHS requirements.

Q: What interface protocol does each codec use?

A: The WM8569SEDS/V uses SPI (Serial Peripheral Interface), while the CS4270-CZZ uses Serial interface. System firmware and hardware interface logic must support the respective protocol.

Q: Can I use the CS4270-CZZ in a design originally specified for the WM8569SEDS/V?

A: Only if the application meets all electrical, thermal, and interface requirements of the CS4270-CZZ. A comprehensive design review is necessary to confirm compatibility with supply voltage ranges, operating temperature, Serial interface protocol, and package form factor.