返回Texas Instruments

Texas Instruments ADS888x 18位SAR模数转换器

Texas Instruments ADS888x 18位SAR模数转换器是18位、真正差分输入模数转换器。这些器件以2.5V到5V外部基准工作，提供宽幅信号范围选择，无需额外输入信号缩放。基准电压设置独立于、并能超越模拟供电电压（AVDD）。器件提供SPI兼容串行接口，支持菊花链工作，以级联多个器件。有可选占线指示器（仅ADS8883、ADS8887上有），可轻松实现与数字主机的同步。器件运行针对极低功耗运行进行了优化。功耗直接与速度成比例。该特性使ADS888x非常适合于低速应用。

The device offers an SPI-compatible serial interface that also supports daisy-chain operation for cascading multiple devices. An optional busy-indicator bit (available for ADS8883, ADS8887 only) makes synchronizing with the digital host easy. Device operation is optimized for very low-power operation. Power consumption directly scales with speed. This feature makes the ADS888x excellent for lower-speed applications.

特性

  • 100kHz to 1MHz sample rate
  • No latency output
  • Unipolar, true-differential input range: -VREF to +VREF
  • 2.7V to 3.6V AVDD input voltage
  • 2.7V to 3.6V or 1.65V to 3.6V DVDD 
  • -40°C to +85°C operating temperature range

应用

  • Automatic test equipment (ATE)
  • Instrumentation and process controls
  • Precision medical equipment
  • Low-power, battery-operated instruments

Functional Diagram

框图 - Texas Instruments ADS888x 18位SAR模数转换器

Related ADC

Texas Instruments ADS8881 18位 1-MSPS 真差分输入ADC

以 2.5V至5V 的外部基准运行，从而在无需额外的信号调节情况下提供宽信号范围。

Learn More关于Texas Instruments ADS8881 18位 1-MSPS 真差分输入ADC View Products与Texas Instruments ADS8881 18位 1-MSPS 真差分输入ADC相关
发布日期: 2014-02-05 | 更新日期: 2022-03-11