SSM2211SZ-REEL

Overview

The SSM2211SZ-REEL7 is a low distortion, 1.5 W audio power amplifier manufactured by Analog Devices Inc. It operates on single-supply voltages between 2.7 V and 5.5 V and delivers 1.5 W into a 4 Ω load or 1 W into an 8 Ω load. The device features a 4 MHz gain bandwidth product and achieves total harmonic distortion plus noise of 0.2% at 1 W output. It includes a shutdown mode that reduces supply current to approximately 1 µA. The component is housed in an 8-lead SOIC package with a specified operating temperature range from -40°C to +85°C.

Feature Summary

• Delivers high-fidelity audio performance with low total harmonic distortion plus noise across varying power levels.
• Incorporates a bridge-tied load (BTL) architecture that eliminates the need for large DC blocking capacitors at the output.
• Features a dedicated shutdown control pin to minimize quiescent current drain during inactive periods.
• Operates stably with unity-gain configuration without requiring external compensation components.

Applications

• Portable computers
• Personal wireless communicators
• Hands-free telephones
• Speaker phones
• Intercoms

Procurement Notes

Verify the specific suffix 'SZ-REEL7' against official manufacturer documentation to confirm the exact reel quantity and tape specifications. Ensure the ordering information matches the required surface-mount package type and thermal characteristics. Cross-reference the datasheet revision history for any updates to electrical parameters or absolute maximum ratings prior to final procurement decisions.

Selection Notes

Select this component for applications requiring a single-supply audio amplifier with minimal external passive components. The BTL configuration allows for higher power delivery compared to single-ended designs without additional coupling capacitors. Consider the thermal resistance values when designing the PCB layout to ensure operation within the specified junction temperature limits under maximum load conditions.

Part Context

This part belongs to the SSM2211 family of audio power amplifiers designed for low-voltage consumer electronics. The 'S' suffix indicates the narrow-body SOIC package variant, while 'Z' typically denotes lead-free compliance. The '-REEL7' designation specifies the tape and reel packaging format intended for automated surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.

FAQ

How does the bridge-tied load configuration affect output capacitor requirements?

The bridge-tied load configuration results in zero DC differential voltage across the outputs, which eliminates the need for large DC blocking capacitors at the speaker terminals.

What is the impact of the shutdown mode on power consumption?

Activating the shutdown mode significantly reduces the supply current drain to approximately 1 µA, thereby extending battery life in portable applications.