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SSM2304Z-EVAL 评估板

The SSM2304 is a fully integrated, high efficiency, Class-D stereo audio amplifier. It is designed to maximize performance for portable applications. The application circuit requires a mini-mum of external components and operates from a single 2.5 V to 5.0 V supply. It is capable of delivering 2 W of continuous output power with less than 10% THD + N driving a 4 Ω load from a 5.0 V supply.

The SSM2304 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 SSM2304 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 SSM2304 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 SSM2304 also has excellent rejection of power supply noise, including noise caused by GSM transmission bursts and RF rectification.

The SSM2304 has a preset gain of 18 dB, which can be reduced by using external resistors.

The SSM2304 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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Functional Block Diagram for SSM2304

技术指标
Output Power (W) 2W Supply Current 7mA
SSM2304 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
SSM2304CPZ-REEL 量产 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 工业
SSM2304CPZ-REEL7 量产 16 ld LFCSP (3x3mm, 1.50mm exposed pad) 16 工业
SSM2304Z-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SSM2304 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