SSM2305CPZ-REEL7

Overview

The SSM2305CPZ-REEL7 is a mono Class-D audio amplifier from Analog Devices, operating on a single supply voltage ranging from 2.5 V to 5.5 V. It delivers up to 2.8 W into a 4 Ω load and 1.6 W into an 8 Ω load at 5.0 V. The device utilizes Σ-Δ modulation for high efficiency without requiring external LC output filters. It features a signal-to-noise ratio of 98 dB, a default closed-loop gain of 18 dB, and ultralow shutdown current of 20 nA. The component operates within a temperature range of -40°C to +85°C and is housed in an 8-lead, 3 mm × 3 mm LFCSP package.

Feature Summary

• Filterless design utilizing Sigma-Delta modulation to eliminate the need for external output LC filters.
• Integrated pop-and-click suppression circuitry to minimize audible transients during power-up and power-down.
• Built-in protection mechanisms including thermal shutdown and short-circuit protection.
• User-adjustable gain configuration via external resistors with a default setting of 18 dB.

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required packaging format, as the REEL7 designation indicates tape and reel packaging. Confirm RoHS compliance status through official documentation. Ensure the selected variant aligns with the necessary thermal management requirements for the target application environment.

Selection Notes

Select this component when board space conservation is critical due to its filterless architecture. Consider the 18 dB default gain and verify if external resistors are needed for different gain settings. Evaluate the 2.5 V to 5.5 V supply range against system battery constraints. Check thermal resistance specifications if multiple units operate simultaneously.

Part Context

This part belongs to the SSM2305 series of high-efficiency Class-D audio amplifiers. It is designed specifically for mobile phone applications where maximizing performance while minimizing external component count is essential. The series includes variants in both LFCSP and MSOP packages to accommodate different PCB layout requirements.

Replacement Considerations

SSM2305CPZ-R2 and SSM2305CPZ-REEL are confirmed substitutes offering identical electrical characteristics and functionality in the same LFCSP package but with different factory packaging formats.