SSM2211S-REEL7

Overview

The SSM2211S-REEL7 is a low distortion, 1.5 W audio power amplifier manufactured by Analog Devices Inc. It operates on single-supply voltages ranging from 2.7 V to 5.5 V and delivers 1 W rms into an 8 Ω load or 1.5 W rms into a 4 Ω load in a bridge-tied configuration. The device features a 4 MHz gain bandwidth product and maintains total harmonic distortion plus noise below 0.2% at 1 W output. It includes a shutdown mode that reduces quiescent current drain to approximately 1 µA. The component is housed in an 8-lead SOIC narrow body surface-mount package.

Feature Summary

• Delivers high-fidelity audio with low total harmonic distortion plus noise across varying supply voltages.
• Features a differential output architecture that eliminates the need for large DC blocking capacitors.
• Incorporates a dedicated shutdown control pin to minimize battery consumption during idle periods.
• Operates reliably over a wide industrial temperature range without requiring external compensation.

Applications

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

Procurement Notes

Verify the specific suffix 'S' indicates the 8-lead SOIC narrow body package variant when sourcing replacements. Confirm the REEL7 designation corresponds to the standard tape and reel packaging format required for automated assembly processes. Ensure compatibility with the intended operating voltage range of 2.7 V to 5.5 V for the target application design.

Selection Notes

Select this component for applications requiring a bridge-tied load configuration to maximize power efficiency and sound pressure level. Consider the thermal resistance characteristics of the SOIC package when designing for high ambient temperatures or continuous high-power operation. Evaluate the shutdown functionality if battery life extension is a critical design parameter for portable devices.

Part Context

This part belongs to the SSM2211 family of low distortion audio amplifiers designed for single-supply operation. The series supports both SOIC and LFCSP packages, offering flexibility in thermal management and board space constraints. It is engineered for unregulated battery applications, maintaining performance down to lower voltage thresholds compared to standard audio amplifiers.

Replacement Considerations

SSM2211CPZ-REEL7

FAQ

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

The differential output ensures zero DC differential voltage across the speaker, eliminating the need for large output coupling capacitors typically required in single-ended configurations.

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

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