SSM2211CP-R2

Overview

The SSM2211CP-R2 is a low distortion, 1.5 W audio power amplifier manufactured by Analog Devices Inc. It operates on a single supply voltage 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. The device features a 4 MHz bandwidth with total harmonic distortion plus noise below 0.2% at 1 W output. It includes a shutdown mode that reduces quiescent current to approximately 1 µA. The component is housed in an 8-lead Lead Frame Chip Scale Package (LFCSP) and supports operation across a temperature range of −40°C to +85°C.

Feature Summary

• Delivers high-fidelity audio performance with low total harmonic distortion plus noise.
• Supports bridged-tied load configurations for efficient power transfer without output coupling capacitors.
• Incorporates a shutdown control pin to minimize battery drain during standby periods.
• Operates reliably over a wide ambient temperature range suitable for portable applications.

Applications

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

Procurement Notes

Verify the specific suffix R2 against the manufacturer's ordering guide to confirm package type and tape-and-reel specifications. Ensure compatibility with the 8-lead LFCSP footprint and thermal requirements. Confirm RoHS compliance status and check for any recent product change notices affecting the component revision.

Selection Notes

Select this amplifier for designs requiring high efficiency and minimal external components. The bridged output configuration eliminates the need for large DC blocking capacitors. Consider the thermal resistance characteristics of the LFCSP package when designing the printed circuit board layout to ensure adequate heat dissipation under maximum load conditions.

Part Context

This component belongs to the SSM2211 family of audio amplifiers designed for low-voltage, single-supply applications. The series provides high output power relative to its size and supply voltage constraints. It is engineered for use in battery-operated devices where extended runtime and sound quality are critical design parameters.

Replacement Considerations

Consult the official datasheet ordering guide for verified substitute part numbers within the same product family. Cross-reference pinouts and thermal characteristics before implementing any alternative components.

FAQ

How does the bridged output configuration benefit the design?

The bridged output doubles the voltage swing across the speaker compared to single-ended operation, delivering four times the power while eliminating the need for large DC blocking capacitors.

What is the purpose of the shutdown pin?

The shutdown pin allows the user to reduce the supply current to approximately 1 µA, significantly extending battery life in portable devices when the amplifier is not in active use.