原创 AD7171: 16位、低功耗Σ?Δ型ADC

    为便于使用，AD7171的所有特性均由专用引脚控制。每次发生数据读取操作时，8个状态位便会附加到16位转换结果上。这些状态位含有一个码序列，可用来确认串行传输的有效性。

    AD7171的输出数据速率为125 Hz，建立时间为24 ms。它具有一路差分输入，增益为1。在用户需用外部放大器来满足系统专用滤波或增益要求的应用中，此特性会很有用。

AD7171采用2.7 V至5.25 V电源供电，并提供10引脚LFCSP封装。

The AD7171 is a very low power 16-bit analog-to-digital converter (ADC). It contains a precision 16-bit Σ-Δ ADC and an on-chip oscillator. Consuming only 110 μA, the AD7171 is particularly suitable for portable or battery operated products where very low power is a requirement. The AD7171 also has a power down mode in which the device consumes 5 μA, thus increasing the battery life of the product.

For ease-of-use, all the features of the AD7171 are controlled by dedicated pins. Each time a data read occurs, 8 status bits are appended to the 16-bit conversion. These status bits contain a pattern sequence that can be used to confirm the validity of the serial transfer.

The output data rate of the AD7171 is 125 Hz while the settling time is 24 ms. The AD7171 has one differential input and has a gain of 1. This is useful in applications where the user needs to use an external amplifier to implement system-specific filtering or gain requirements.

The AD7171 operates with a power supply from 2.7 V to 5.25 V. It is available in a 10-lead LFCSP package.

 
深圳成德广营科技有限公司
http://www.chemdy.com