SSM2319CBZ-REEL7

Overview

The SSM2319CBZ-REEL7 is a fully integrated, high-efficiency mono Class-D audio amplifier designed for mobile phone applications. It operates from a single 2.5 V to 5.5 V supply and delivers 3 W into a 3 Ω load or 1.4 W into an 8 Ω load at 5.0 V with less than 1% THD+N. The device utilizes spread-spectrum Σ-Δ modulation to eliminate the need for external LC output filters, achieving 90% efficiency at 1.4 W into 8 Ω. Key specifications include a 98 dB SNR, ultralow shutdown current of 20 nA, and built-in thermal and short-circuit protection.

Feature Summary

• Filterless design using ultra-efficient spread-spectrum Sigma-Delta modulation that removes the requirement for external LC output filters.
• Internal modulator synchronization (SYNC) capability to prevent clock intermodulation effects when multiple amplifiers operate in close proximity.
• Integrated pop-and-click suppression circuitry minimizes audible voltage transients during power-up and power-down sequences.
• Micropower shutdown mode reduces standby consumption to 20 nA, activated by applying a logic low signal to the SD pin.

Applications

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

Procurement Notes

Verify the specific ordering suffix REEL7 against the manufacturer's official documentation to confirm tape and reel packaging quantities. Ensure compatibility with the required input common-mode voltage range and check absolute maximum ratings for supply voltage limits before integration. Confirm RoHS compliance status through the latest datasheet revision.

Selection Notes

Select this component for designs requiring minimal external components due to its filterless architecture. Consider the default 12 dB gain setting and verify if external resistors are needed for user-adjustable gain configurations. Evaluate the 9-ball WLCSP package dimensions for PCB space constraints and ensure adequate thermal management for the specified operating temperature range.

Part Context

This part belongs to the Analog Devices SSM2319 series of filterless Class-D audio amplifiers. It is specifically engineered to maximize performance in portable electronics where board space and battery life are critical. The device integrates a high-efficiency modulator and protection circuits within a compact 1.5 mm x 1.5 mm wafer level chip scale package.

Replacement Considerations

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