SSM2302CPZ-REEL

Overview

The SSM2302CPZ-REEL is a fully integrated, high-efficiency Class-D stereo audio amplifier designed for mobile phone applications. It delivers 1.4 W into an 8 Ω load at 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 achieves 85% efficiency at 1.4 W output. It features a signal-to-noise ratio better than 98 dB and utilizes Σ-Δ modulation for lower EMI emissions compared to PWM architectures. The amplifier includes built-in resistors to reduce board component count, pop-and-click suppression, and ultralow shutdown current of 20 nA. It is available in a 16-lead, 3 mm × 3 mm LFCSP package.

Feature Summary

• Filterless Class-D architecture utilizing Σ-Δ modulation to minimize external components and reduce EMI radiated emissions.
• Integrated pop-and-click suppression circuitry that minimizes voltage glitches during turn-on and turn-off to reduce audible noise.
• Micropower shutdown mode with typical current of 20 nA, activated by applying a logic low to the SD pin.
• Built-in thermal shutdown and output short-circuit protection circuits.

Applications

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

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or direct channels. Confirm the specific REEL packaging suffix matches design requirements. Check for obsolete status notifications as the datasheet indicates this model may be discontinued. Ensure proper ESD handling procedures are followed during storage and assembly due to device sensitivity.

Selection Notes

Select this amplifier for portable electronics requiring high efficiency and minimal external filtering. Verify input common-mode voltage compatibility; coupling capacitors are optional if biased near VDD/2. Choose gain configuration based on application needs: fixed 6 dB or 12 dB via GAIN pin, or adjustable via external resistors. Ensure PCB layout supports wide traces for power paths to maintain efficiency and minimize IR drops.

Part Context

The SSM2302 belongs to Analog Devices' line of filterless Class-D audio amplifiers optimized for battery-powered consumer devices. It replaces traditional linear amplifiers to extend battery life while maintaining audio fidelity. The CPZ suffix denotes a lead-free, RoHS-compliant version housed in a compact LFCSP package suitable for space-constrained designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Consult Analog Devices technical support for current equivalent recommendations given the obsolete status.