SSM2319CBZ-REEL

Overview

The SSM2319CBZ-REEL is a fully integrated, high-efficiency mono Class-D audio amplifier manufactured by Analog Devices Inc. It utilizes an ultra-efficient spread-spectrum Σ-Δ modulation scheme that eliminates the need for external LC output filters. The device operates from a single supply voltage ranging from 2.5 V to 5.5 V and delivers up to 3 W of continuous output power into a 3 Ω load at 5.0 V with less than 1% total harmonic distortion. Key performance metrics include a signal-to-noise ratio of 98 dB and 90% efficiency when driving an 8 Ω speaker at 1.4 W. It features ultralow shutdown current, pop-and-click suppression, and internal modulator synchronization.

Feature Summary

• Filterless design using spread-spectrum Sigma-Delta modulation to reduce electromagnetic interference and minimize external component count.
• Built-in synchronization capability (SYNC) to prevent clock intermodulation effects when multiple amplifiers are used in close proximity.
• Integrated pop-and-click suppression circuitry to minimize audible transients during power-up and power-down sequences.
• Micropower shutdown mode with typical current consumption of 20 nA, activated via a logic low signal on the SD pin.

Applications

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

Procurement Notes

Verify the specific ordering suffix REEL against the manufacturer's official documentation to confirm tape and reel packaging specifications. Ensure compatibility with the required industrial temperature range of -40°C to +85°C. Confirm that the 9-ball WLCSP package dimensions align with the target PCB layout constraints. Cross-reference the part number with the latest datasheet revision to validate all electrical parameters before finalizing procurement.

Selection Notes

Select this component for applications requiring high power efficiency without the board space penalty of output filters. The default fixed gain of 12 dB can be adjusted downward using external resistors if lower gain is necessary. Consider the internal modulator synchronization feature if designing systems with multiple audio channels to mitigate beating effects. Ensure the power supply decoupling follows recommended guidelines to maintain optimal PSRR and efficiency.

Part Context

The SSM2319 belongs to Analog Devices' portfolio of filterless Class-D audio amplifiers designed for portable consumer electronics. It is housed in a compact 9-ball, 1.5 mm × 1.5 mm wafer level chip scale package (WLCSP). This form factor supports miniaturization requirements for mobile devices while providing built-in thermal shutdown and output short-circuit protection for enhanced reliability.

Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.