SSM3525BCBZR7

Overview

The SSM3525BCBZR7 is a mono Class D audio amplifier featuring a SoundWire interface, manufactured by Analog Devices Inc. It operates with a supply voltage range of 4.5 V to 17 V and supports IOVDD from 1.1 V to 1.90 V. The device delivers 30.2 W output power at 17 V supply into a 4 Ω load with 1% THD+N. Key electrical specifications include a 37.5 μV rms noise floor, 107 dB A-weighted SNR, and 6.63 mA quiescent current at 12 V PVDD. It accommodates sample rates from 8 kHz to 192 kHz and utilizes a 23-ball WLCSP package measuring 2.26 mm × 2.38 mm.

Feature Summary

• Integrates MIPI Alliance SoundWire Specification Version 1.1 compliant interface for clocking, audio data, and control over a two-wire connection.
• Provides digitized output sensing capabilities for output voltage, output current, and PVDD supply via integrated ADCs.
• Includes built-in AGC with battery voltage-based limiter and flexible digital/analog gain adjustment mechanisms.

Applications

• Mobile computing
• Portable electronics

Procurement Notes

Verify the specific suffix BCBZR7 against official Analog Devices documentation to confirm tape-and-reel packaging and exact pinout configuration. Ensure compatibility with the host system's SoundWire master controller operating at 1.2 V or 1.8 V logic levels. Confirm that the 23-ball WLCSP footprint matches the PCB layout requirements before finalizing procurement orders.

Selection Notes

Select this component when a high-efficiency mono amplifier requires digital input and integrated system monitoring via SoundWire. It is suitable for designs needing precise output sensing for protection and feedback without external components. Consider the 4.5 V to 17 V input range for single-cell or dual-cell battery applications requiring up to 30 W output power.

Part Context

This part belongs to the SSM3525 family, which combines a filterless Class D amplifier with advanced digital interfaces. The SSM3525-MIPI variant specifically adds the SoundWire block to the standard SSM3525 functionality, enabling sophisticated system-level control and audio data transport in compact mobile form factors.

Replacement Considerations

Direct substitutes within the same family include the EVAL-SSM3525Z evaluation board for testing purposes. For functional replacements, verify if other SSM3525 variants with different interface options meet the specific system requirements.

FAQ

What is the maximum supported sample rate for the SSM3525BCBZR7?

The device supports sample rates ranging from 8 kHz to 192 kHz.

Does the SSM3525BCBZR7 require external output filters?

No, it is a filterless Class D amplifier utilizing Σ-Δ modulation.