SSM2804CBZ-RL

Overview

The SSM2804CBZ-RL is an audio subsystem integrating a stereo Class-D speaker amplifier and a capless headphone driver. It features three single-ended inputs with optional differential mode, configurable via I2C. The Class-D section delivers up to 1.4 W per channel into 8 Ω loads at 5 V supply. The headphone output uses true ground Class-G technology, providing 20 mW into 32 Ω. Key specifications include a 30 dB input gain range, -63 dB to +12 dB Class-D volume control, and -75 dB to 0 dB headphone volume control. Operating temperatures range from -40°C to +85°C.

Feature Summary

• Integrates filterless Class-D speaker amplifiers and high-efficiency capless headphone drivers in a single package.
• Features three flexible audio inputs with independent I2C-adjustable gain and mixing capabilities.
• Includes hardware-based headphone level limiting and automatic level control for speaker protection.
• Utilizes sigma-delta modulation to minimize EMI emissions without external filtering for short cables.

Applications

• Mobile phones
• Portable multimedia devices

Procurement Notes

Verify the specific ordering suffix RL7 against the manufacturer's current datasheet to confirm packaging details. Confirm availability status as distribution channels may list this component as obsolete or limited stock. Ensure the design supports the required 30-ball WLCSP footprint and thermal management for the specified power levels.

Selection Notes

Select this component for designs requiring both speaker and headphone amplification in a compact form factor. Consider the I2C interface requirements for system integration. Evaluate the power supply constraints, as the Class-D and headphone sections have different voltage recommendations. Verify that the board layout accommodates the charge pump capacitors for the Class-G headphone output.

Part Context

The SSM2804 belongs to Analog Devices' audio subsystem family, designed specifically for mobile applications. It combines multiple audio functions typically found in separate components, reducing bill of materials and board space. The device is part of the broader portfolio of mixed-signal audio solutions offered by the manufacturer.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation. Check for newer revisions within the SSM28xx series or consult the manufacturer for pin-compatible alternatives if this specific part is discontinued.