/简体中文/
/简体中文/
/简体中文/
/简体中文/
/简体中文/
/简体中文/
/简体中文/
/简体中文/
/简体中文/
/简体中文/
The SSM2311 is a fully integrated, high efficiency, Class-D audio amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires a minimum of external components and operates from a single 2.5 V to 5.5 V supply. It is capable of delivering 3 W of continuous output power with less than 1% THD + N driving a 3 Ω load from a 5.0 V supply.
The SSM2311 features a high efficiency, low noise modulation scheme that does not require any external LC output filters. The modulation continues to provide high efficiency even at low output power. It operates with 90% efficiency at 1.4 W into 8 Ω or 85% efficiency at 3 W into 3 Ω from a 5.0 V supply and has an SNR that is better than 98 dB. Spread-spectrum pulse density modulation is used to provide lower EMI-radiated emissions compared with other Class-D architectures.
The SSM2311 has a micropower shutdown mode with a typical shutdown current of 20 nA. Shutdown is enabled by applying a logic low to the SD pin.
The device also includes pop-and-click suppression circuitry. This minimizes voltage glitches at the output during turn-on and turn-off, thus reducing audible noise on activation and deactivation.
The fully differential input of the SSM2311 provides excellent rejection of common-mode noise on the input. Input coupling capacitors can be omitted if the dc input common-mode voltage is approximately VDD/2.
The default gain of SSM2311 is 18 dB, but users can reduce the gain by using a pair of external resistors (see the Gain section). The SSM2311 is specified over the industrial temperature range (−40°C to +85°C). It has built-in thermal shutdown and output short-circuit protection. It is available in a 9-ball, 1.5 mm × 1.5 mm wafer level chip scale package (WLCSP).
Applications
KiCad-电子设计自动化软件KiCad下载 v6.0.10官方版07-08 / 1.02G
Zuken CADSTAR-Zuken CADSTAR(PCB设计软件)下载 v16.0官方版12-01 / 174.5M
3dsource零件库破解版-3DSource零件库下载 v6.0.20.0官方版12-01 / 90.9M
才茂产品配置工具-才茂dtu通信模块设置软件下载 v5.6.1912-01 / 3.8M
MicroLab调试工具-MicroLab串口网络二合一调试工具下载 v1.7.0官方版12-01 / 54.0M
宝马瑞金软件-宝马瑞金诊断软件(ISTA-D)下载 v4.19.15官方免费版07-08 / 377M