SSM2301RMZ-REEL

Overview

The SSM2301RMZ-REEL is a mono Class-D audio amplifier from Analog Devices, operating on a single supply voltage ranging from 2.5 V to 5.0 V. It delivers 1.4 W of continuous output power into an 8 Ω load at 5.0 V with less than 1% THD+N. The device utilizes Σ-Δ modulation for filterless operation, achieving 85% efficiency and greater than 98 dB SNR. It features 20 nA shutdown current, pop-and-click suppression, and fixed or user-adjustable gain configurations.

Feature Summary

• Filterless Class-D architecture using Σ-Δ modulation eliminates the need for external LC output filters.
• Integrated pop-and-click suppression minimizes audible transients during power-up and power-down cycles.
• Micropower shutdown mode reduces standby current consumption significantly.
• Built-in thermal shutdown and output short-circuit protection ensure operational reliability.

Applications

• Mobile phones
• MP3 players
• Portable gaming devices
• Educational toys

Procurement Notes

Verify the specific package variant (MSOP) against the RMZ suffix in official documentation. Confirm RoHS compliance status as indicated by the Z suffix. Ensure the reel packaging matches production requirements. Cross-reference the revision history for any updates to electrical specifications or pinout definitions before finalizing procurement.

Selection Notes

Select this component for applications requiring high efficiency and minimal external components. The filterless design reduces board space and system cost. Consider the single-supply operation range when designing power architectures. Evaluate the gain configuration options to match input signal levels without additional external resistors if fixed gain suffices.

Part Context

This part belongs to the SSM2301 series of high-efficiency mono Class-D amplifiers. It is designed specifically for mobile phone applications where power conservation and small form factors are critical. The series offers both LFCSP and MSOP package options to accommodate different PCB layout constraints while maintaining identical electrical performance characteristics.

Replacement Considerations

SSM2301CPZ-R21

FAQ

Does the SSM2301 require external output filters?

No, the SSM2301 uses a filterless Σ-Δ modulation scheme that relies on the speaker's inherent inductance and natural filtering capabilities.

How is the gain configured on the SSM2301?

Gain can be set to 6 dB or 12 dB via the GAIN pin, or adjusted externally using resistors connected to the input pins.