This document mainly introduces the characteristics of SSM2211 audio amplifier chip, including power, output, supply voltage, bandwidth, stability, distortion rate, power supply rejection ratio, etc.
The SSM2211 is a high‑performance audio power amplifier that delivers up to 1 W rms into an 8 Ω speaker or 1.5 W rms into a 4 Ω load. It operates from a single supply of 2.7 V to 5.5 V and continues to function down to 1.75 V, making it suitable for battery‑powered devices such as portable computers, hands‑free phones, and talking toys. Key features include a 4 MHz bandwidth, >80° phase margin, and low distortion (0.2 % THD at 1 W output).
The device is offered in 8‑lead SOIC and 8‑lead LFCSP (CP‑8) surface‑mount packages. It includes a shutdown‑sensing circuit that reduces quiescent current to 100 nA, and it is rated for operation from –20 °C to +85 °C. Detailed electrical characteristics, pin configurations, and typical performance graphs are provided, along with an evaluation board schematic and ordering guide.
| Supply Voltage Range (single‑supply) | 2.7 V – 5.5 V |
|---|---|
| Minimum Operating Voltage | 1.75 V |
| Bandwidth (Gain‑Bandwidth Product) | 4 MHz |
| Phase Margin | >80° |
| Total Harmonic Distortion (THD) @ 1 W | 0.2 % (typical) |
| Operating Temperature Range | –20 °C to +85 °C |
| Package Options | 8‑Lead SOIC (R‑8) and 8‑Lead LFCSP (CP‑8) |
The SSM2211 operates from a single supply of 2.7 V to 5.5 V, and it can continue to function down to 1.75 V when powered from batteries.
The amplifier is offered in 8‑lead SOIC (R‑8) and 8‑lead LFCSP (CP‑8) surface‑mount packages.