SSM2302 开发工具SSM2302Z-EVAL

The SSM2302 is a fully integrated, high efficiency, Class-D stereo 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 5.0 V supply. It is capable of delivering 1.4 W of continuous output power with less than 1% THD + N driving an 8 Ω load from a 5.0 V supply.

The SSM2302 features a high efficiency, low noise modulation scheme. It operates with 85% efficiency at 1.4 W into 8 Ω from a 5.0 V supply and has a signal-to-noise ratio (SNR) that is better than 98 dB. PDM modulation is used to provide lower EMI-radiated emissions compared with other Class-D architectures.

The SSM2302 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 architecture of the device allows it to achieve a very low level of pop and click. 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 SSM2302 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 SSM2302 also has excellent rejection of power supply noise, including noise caused by GSM transmission bursts and RF rectification. PSRR is typically 63 dB at 217 Hz.

The gain can be set to 6 dB or 12 dB utilizing the gain control select pin connected respectively to ground or VDD. Gain can also be adjusted externally by using an external resistor.

The SSM2302 is specified over the commercial temperature range (−40°C to +85°C). It has built-in thermal shutdown and output short-circuit protection. It is available in a 16-lead, 3 mm × 3 mm lead-frame chip scale package (LFCSP).

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技术特性
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Functional Block Diagram for SSM2302

SSM2302 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
SSM2302CPZ-R2 量产 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 工业
SSM2302CPZ-REEL 量产 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 工业
SSM2302CPZ-REEL7 量产 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 工业
SSM2302Z-EVAL 量产 评估板   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SSM2302 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