ADI公司的ADGS1408/ADGS1409是包含有八个单路和四个差分通路的模拟复接器,SPI接口控制模拟开关,具有很好的误差检测特性如循环冗余检查(CRC)误差检测,无效读/写地址检测,以及SCLK计数误差检测.支持突发模式和菊花链模式,工作电压±15 V,±5 V和+12 V,25℃时的开态电阻4Ω,主要用在自动测试设备(ATE),数据采集系统,通信系统,取样和保持系统,音频信号路由,视频信号路由,电池为能源系统,以及继电器替代品.本文介绍了ADGS1408/ADGS1409产品亮点和主要特性,功能框图,以及EVAL-ADGS1408SDZ/EVAL-ADGS1409SDZ主要特性,电路图,材料清单和PCB设计图.
The ADGS1408/ADGS1409 are analog multiplexers comprising eight single channels and four differential channels, respectively. A serial peripheral interface (SPI) controls the switches. The SPI interface has robust error detection features such as cyclic redundancy check (CRC) error detection, invalid read/write address detection, and SCLK count error detection. It is possible to daisy-chain multiple ADGS1408/ADGS1409 devices together. Daisy-chain mode enables the configuration of multiple devices with a minimal amount of digital lines. The ADGS1408/ADGS1409 can also operate in burst mode to decrease the time between SPI commands. iCMOS construction ensures ultra low power dissipation, making the devices ideally suited for portable and battery-powered instruments. Each switch conducts equally well in both directions when on, and each switch has an input signal rang