STMicroelectronics

A21SP16J  

Audio Amplifiers

A21SP16J Description

The A21SP16J from STMicroelectronics is a high-efficiency Class D mono audio amplifier designed for compact, power-sensitive applications. Delivering 1.4W of output power into an 8Ω load, it operates from a 2.4V to 5.5V supply, making it ideal for battery-powered devices. Packaged in a 9FLIPCHIP and available in Tape & Reel (TR), it supports surface-mount assembly for streamlined manufacturing. The amplifier complies with ROHS3 and REACH environmental standards and carries an EAR99 ECCN classification, ensuring global compatibility.

A21SP16J Features

• High Efficiency: Class D architecture minimizes power dissipation, extending battery life in portable devices.
• Integrated Protection: Features depop circuitry (reducing turn-on/off noise) and thermal protection for reliable operation.
• Wide Voltage Range: Operates from 2.4V to 5.5V, accommodating diverse power sources (e.g., Li-ion batteries, USB power).
• Compact Form Factor: Surface-mount 9FLIPCHIP package saves PCB space in space-constrained designs.
• Low Sensitivity: MSL 1 (Unlimited) ensures no moisture handling restrictions during assembly.

A21SP16J Applications

• Portable Electronics: Smartphones, Bluetooth speakers, and wearables benefit from its low-voltage operation and efficiency.
• IoT Devices: Ideal for voice-enabled sensors or smart home hubs requiring clear audio output.
• Gaming Accessories: Enhances audio in compact headsets or handheld consoles.
• Medical Devices: Suitable for audible alerts in battery-operated medical equipment due to robust thermal management.

Conclusion of A21SP16J

The A21SP16J stands out for its balance of power efficiency, compact size, and protection features, making it a superior choice for modern low-voltage audio applications. Its depop suppression and thermal safeguards ensure high reliability, while the wide supply range offers design flexibility. Engineers targeting space-constrained, battery-powered audio systems will find this amplifier a compelling solution, backed by STMicroelectronics' proven performance in audio ICs.

A21SP16J Documents

Download datasheets and manufacturer documentation for A21SP16J

Datasheets :

A21SP16      

HTML Datasheet :

A21SP16