SSM2301CPZ-REEL

Overview

The SSM2301CPZ-REEL is a fully integrated, high-efficiency, mono Class-D audio amplifier designed for mobile phone applications. It delivers 1.4 W into an 8 Ω load at a 5.0 V supply with less than 1% THD + N. The device operates from a single 2.5 V to 5.0 V supply and features a filterless Σ-Δ modulation scheme that eliminates the need for external LC output filters. It achieves 85% efficiency at full power and offers a signal-to-noise ratio greater than 98 dB. The amplifier includes pop-and-click suppression, short-circuit protection, thermal shutdown, and an ultralow shutdown current of 20 nA.

Feature Summary

• Filterless Class-D architecture utilizing Σ-Δ modulation to minimize external component count and reduce EMI emissions without requiring output LC filters.
• Integrated pop-and-click suppression circuitry that minimizes voltage glitches during turn-on and turn-off to ensure noiseless activation.
• Built-in protection mechanisms including thermal shutdown and output short-circuit protection with automatic recovery upon fault removal.
• Configurable gain settings allowing selection between fixed 6 dB or 12 dB via digital control, or user-adjustable gain through external input resistors.

Applications

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

Procurement Notes

Verify the specific package variant required, as the SSM2301 series includes both LFCSP and MSOP options. Confirm RoHS compliance status indicated by the 'Z' suffix in the ordering guide. Ensure the selected reel quantity matches production needs, noting distinctions between REEL, REEL1, and REEL7 packaging formats. Cross-reference the manufacturer part number with distributor listings to confirm availability and lead times before finalizing procurement plans.

Selection Notes

Select this amplifier for designs prioritizing board space conservation due to its filterless operation. Consider the 2.5 V to 5.0 V supply range compatibility with battery-powered systems. Evaluate the gain configuration requirements; use the GAIN pin for fixed settings or add external resistors for adjustable levels. Ensure PCB layout guidelines are followed to maintain high efficiency and low distortion, particularly regarding trace width and decoupling capacitor placement near the VDD pin.

Part Context

The SSM2301 belongs to Analog Devices' line of high-efficiency Class-D audio amplifiers. It is specifically engineered to maximize performance in portable electronics where power efficiency and minimal external components are critical. The device integrates advanced modulation techniques to provide high audio quality while reducing electromagnetic interference, making it suitable for sensitive mobile environments.

Replacement Considerations

SSM2301CPZ-R2, SSM2301CPZ-REEL7, SSM2301RMZ-REEL7