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Product Detailed Parameters
- Description：IC AMP CLASS D MONO 2.5W 9WCSP
- Series：-
- Mfr：Cirrus Logic Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class D
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：2.5W x 1 @ 4Ohm
- Voltage - Supply：3.2V ~ 5.5V
- Features：Depop, Mute, Short-Circuit and Thermal Protection
- Mounting Type：Surface Mount
- Supplier Device Package：9-W-CSP (1.57x1.47)
- Package / Case：9-WFBGA, WLCSP
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The WM9082ECSN/R is a high-performance sigma-delta Class D speaker driver manufactured by Cirrus Logic. It features a stereo PDM digital audio input supporting 32kHz, 44.1kHz, and 48kHz sample rates with automatic left/right channel selection. The device delivers up to 2.5W into a 4Ω load at 5V supply or 1.3W at 3.6V supply. Key electrical parameters include a 92dB A-weighted SNR, programmable output slew rates for EMI control, and integrated short-circuit and thermal protection. It operates within a -40°C to +85°C temperature range and is housed in a compact 9-ball CSP package.
Feature Summary
- Sigma-delta Class D architecture providing improved power efficiency and EMI performance compared to traditional PWM designs.
- Stereo PDM digital audio interface eliminates the need for traditional input-filtering components and simplifies software development.
- Integrated first-order high-pass filter removes DC offsets to prevent speaker damage.
- Configurable output slew rates allow optimization for low electromagnetic interference.
Applications
- Mobile Handsets
- Portable Media Players
- Notebooks and Laptop Computers
- LCD Televisions
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required tape and reel packaging format. Ensure compliance with RoHS standards and check for any relevant environmental certifications prior to integration into production systems.
Selection Notes
Select this component for applications requiring direct loudspeaker connection without external output filters. Evaluate the sigma-delta modulation benefits for EMI-sensitive environments. Consider the flexible 2-wire interface for minimizing PCB footprint and simplifying system integration in space-constrained portable devices.
Part Context
This component belongs to the Wolfson Microelectronics audio driver portfolio, now part of Cirrus Logic. It is designed as a mono speaker driver optimized for mobile and portable electronics. The device integrates advanced control codes transmitted via the audio interface for state management and configuration.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing BOMs and design-in requirements before considering alternative sources.
FAQ
How does the WM9082 handle channel selection?
The device automatically selects the Left or Right channel based on the hardware configuration of the PDM interface pins (IN1 and IN2).
What protection features are included?
The WM9082 includes short-circuit protection and thermal protection, which disable the Class D driver if fault conditions occur.
