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SSM2319 评估板 EVAL-SSM2319Z

The SSM2319 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 <1% THD + N driving a 3 Ω load from a 5.0 V supply.

The SSM2319 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 of 98 dB. Spread-spectrum pulse density modulation is used to provide lower EMI-radiated emissions compared with other Class-D architectures.

SYNC can be activated in the event that end users are concerned about clock intermodulation (beating effect) of several amplifiers in close proximity.

The SSM2319 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, reducing audible noise on activation and deactivation.

The default gain of the SSM2319 is 12 dB, but users can reduce the gain by using a pair of external resistors (see the Gain section).

The SSM2319 is specified over the industrial temperature range of -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).

产品应用领域 Applications
特点
功能框图

SSM2319 Functional Block Diagram

芯片引脚定义图

参数
SNR (dB) 98dB Supply Current 3.7mA
Efficiency (%) 90% Pos Supply +2.5V to +5.5V
Output Power (W) 3W
SSM2319 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
EVAL-SSM2319Z 量产 评估板 工业
SSM2319CBZ-REEL 量产 9 工业
SSM2319CBZ-REEL7 量产 9 工业
应用技术支持与电子电路设计开发资源下载
  1. ADC音频放大器系列SSM2319 数据手册DataSheet 下载 . PDF
  2. Advantiv 高级电视解决方案 . PDF
  3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF
  4. ADI 美国模拟器件公司音频放大器选型指南 . PDF