SSM3582ACPZ-RL

Overview

The SSM3582ACPZ-RL is a digital input stereo Class-D audio amplifier from Analog Devices. It operates on a single 4.5 V to 16.5 V supply and delivers up to 2× 14.67 W into 4 Ω loads at 12 V, or 2× 14.4 W into 8 Ω loads at 16 V. In mono mode, it provides 1× 49.69 W into 2 Ω loads at 16 V. The device features a proprietary filterless Σ-Δ modulation scheme, achieving 106.5 dB SNR and 0.004% THD+N. It supports I2S, left justified, and TDM interfaces with sample rates from 8 kHz to 192 kHz. Packaged in a 40-lead, 6 mm × 6 mm LFCSP with a thermal pad.

Feature Summary

• Proprietary spread spectrum Sigma-Delta modulation enables direct speaker connection without output filters while minimizing radiated emissions.
• Supports low impedance loads down to 3 ohms in stereo mode and 2 ohms in mono mode for extended bandwidth tweeter applications.
• Integrated I2C control allows configuration of up to 16 addresses and supports standalone operation without external microcontrollers.
• Includes automatic power-down functionality that shuts down the amplifier and DAC during digital silence to minimize power consumption.

Applications

• Mobile computing
• All-in-one computers
• Portable electronics
• Wireless speakers
• Televisions

Procurement Notes

Verify the specific ordering suffix matches the required reel packaging quantity and tape specifications. Confirm the revision level against the latest datasheet to ensure compatibility with existing design files. Check for any product change notifications regarding material or manufacturing site updates before finalizing procurement orders.

Selection Notes

Select this component for designs requiring high efficiency and minimal external components. Ensure the system power supply voltage falls within the 4.5 V to 16.5 V range. Verify that the host processor supports the required digital audio interface protocols such as I2S or TDM. Consider the thermal requirements of the LFCSP package based on the expected output power and ambient temperature conditions.

Part Context

This part belongs to the SSM3582A family of high-efficiency digital input amplifiers. It is designed to replace traditional analog input Class-D amplifiers by integrating the digital-to-analog conversion and modulation directly on-chip. The device simplifies board layout by eliminating large output LC filters typically required in other Class-D architectures.

Replacement Considerations

Direct pin-compatible replacements are not explicitly listed in the provided documentation. Designers should evaluate other Analog Devices filterless Class-D amplifiers with similar power ratings and digital interface support if substitution is necessary.

FAQ

Does the SSM3582ACPZ-RL require external output filters?

No, the device uses a proprietary filterless Sigma-Delta modulation scheme that allows direct connection to the speaker without external LC filters.

What is the minimum load impedance supported?

The amplifier supports loads as low as 3 ohms with 5 μH inductance in stereo mode, and 2 ohms with 5 μH inductance in mono mode.