WM8761CBGED Audio DAC Equivalent & Substitute Parts

Part Overview

The WM8761CBGED is a 24-bit audio digital-to-analog converter (DAC) manufactured by Cirrus Logic Inc., designed for audio applications requiring 192 kHz sampling rate capability. This component operates as a single-supply device with a voltage range of 2.7V to 5.5V and is housed in a 14-SOIC surface mount package.

The WM8761CBGED is classified as Last Time Buy, indicating that the manufacturer has discontinued or will discontinue production. This status necessitates identification of equivalent substitute components to ensure design continuity and supply chain reliability for new production runs and long-term product support.

Substiute Parts

WM8761CBGED

Cirrus Logic Inc.In Stock: 673WM8761CBGED Datasheet

Current PartRFQ

WM8524CGEDT

Cirrus Logic Inc.In Stock: 39257WM8524CGEDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WM8761CBGED is determined by the following critical parameters that must remain consistent or compatible:

Core Functional Parameters:

• Resolution: 24 bits (must match)
• Sampling Rate: 192 kHz (must match)
• Number of Channels: 2 (must match)
• Type: Audio DAC (must match)

Electrical Parameters:

• Voltage Supply Range: Must be compatible with system design; substitute may have narrower range
• Operating Temperature Range: Must support -40°C ~ 85°C minimum
• Data Interface: I2S is the primary interface; DSP support is optional

Physical & Compliance Parameters:

• Mounting Type: Surface Mount (required)
• RoHS Status: ROHS3 Compliant (required)
• Package compatibility: Different package types are acceptable if PCB layout permits

The WM8524CGEDT qualifies as a direct substitute based on matching core functional parameters (24-bit resolution, 192 kHz sampling rate, 2-channel audio DAC, I2S interface) and compliance requirements (ROHS3, EAR99, same HTSUS code).

Parameter Comparison

Engineering Selection Recommendations

The WM8524CGEDT is qualified as a substitute for the WM8761CBGED based on the following engineering criteria:

Functional Equivalence: Both components deliver identical audio DAC performance specifications: 24-bit resolution, 192 kHz sampling rate, 2-channel output, and I2S digital interface compatibility.

Compliance & Regulatory: Both parts maintain ROHS3 compliance and carry identical HTSUS classification (8542.39.0001), ensuring regulatory alignment for manufacturing and distribution.

Supply Chain Status: The WM8524CGEDT is classified as Active with 39,200 units in stock, providing immediate availability and long-term supply continuity compared to the Last Time Buy status of the WM8761CBGED.

Design Considerations: The primary design change involves package transition from 14-SOIC to 16-TSSOP and voltage supply range narrowing from 2.7V–5.5V to 2.97V–3.63V. PCB layout modification is required to accommodate the different package footprint. System power supply must operate within the narrower voltage window of the substitute part.

Moisture Handling: The WM8524CGEDT offers superior moisture resistance (MSL 1 vs. MSL 3), reducing handling and storage constraints during manufacturing.

Frequently Asked Questions (FAQ)

Q: Can the WM8524CGEDT directly replace the WM8761CBGED without design changes?

A: The WM8524CGEDT is functionally equivalent but requires PCB layout modification due to package change (14-SOIC to 16-TSSOP). Additionally, the system power supply must operate within 2.97V–3.63V to meet the substitute part's voltage specification.

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

A: The core audio DAC functionality is identical. The main differences are package type (14-SOIC vs. 16-TSSOP), voltage supply range (2.7V–5.5V vs. 2.97V–3.63V), data interface support (WM8761 supports both DSP and I2S; WM8524 supports I2S only), and moisture sensitivity level (MSL 3 vs. MSL 1).

Q: Is the WM8524CGEDT compatible with I2S-based audio systems?

A: Yes. The WM8524CGEDT supports I2S digital interface, which is the standard audio protocol for both parts. If your system uses DSP interface exclusively, compatibility must be verified against your specific implementation.

Q: What are the implications of the narrower voltage supply range?

A: The WM8524CGEDT requires a power supply within 2.97V–3.63V, compared to the WM8761CBGED's 2.7V–5.5V range. Verify that your system power supply can maintain stable operation within this narrower window. If your design operates outside this range, the substitute is not suitable.

Q: Does the package change affect audio performance?

A: No. Both packages are surface mount with equivalent electrical performance characteristics. The package change is a physical layout consideration only and does not affect audio quality or signal integrity when properly implemented on the PCB.

Q: What is the impact of MSL rating difference?

A: The WM8524CGEDT has MSL 1 (unlimited moisture exposure tolerance) compared to the WM8761CBGED's MSL 3 (168-hour limit). This means the substitute part has less stringent moisture handling requirements during manufacturing and storage, reducing production constraints.