AD7797BRUZ-REEL:  24位、低功耗、用于桥式传感器的Σ-Δ型ADC

AD7797是一款适合电子秤等高精度桥式传感器应用的完整模拟前端,内置一个24位分辨率Σ-Δ型ADC。片内仪表放大器具有128的固定增益,因此可直接输入来自桥式传感器等的小信号。AD7797具有一个差分输入,还集成了一个温度传感器,与内部ADC直接相连,此温度传感器可用于电桥的温度补偿。AD7797 器件可以采用内部时钟工作,或者也可采用外部时钟工作,输出数据速率可通过软件编程设置,可在4.17 Hz至123 Hz的范围内变化。AD7797器件采用2.7 V至5.25 V电源供电,典型功耗为250 µA,采用16引脚TSSOP封装。

The AD7797 is a complete analog front end for high precision bridge sensor applications such as weighscales. The AD7797 contains a ∑-∆ ADC capable of 24-bit resolution. The on-chip instrumentation amplifier has a fixed gain of 128 so signals of small amplitude such as those from bridge sensors can be interfaced directly to the ADC.

The part has one differential input. The device also contains a temperature sensor which is internally connected to the ADC. This temperature sensor can be used to perform temperature compensation of the bridge.

The device can be operated with the internal clock, or alternatively, an external clock can be used. The output data rate from the parts is software-programmable and can be varied from 4.17 Hz to 123 Hz.The part operates with a power supply from 2.7 V to 5.25 V. It consumes a current of 250 µA typical and is housed in a 16-lead TSSOP package.

AD7797BRUZ-REEL 应用
AD7797BRUZ-REEL 特点
AD7797BRUZ-REEL 功能框图

AD7797 产品选型
产品型号 产品状态 封装 引脚 温度范围
AD7797BRUZ Prodn 16 ld TSSOP 16 工业
AD7797BRUZ-REEL Prodn 16 ld TSSOP 16 工业
EVAL-AD7797EBZ Prodn EVALUATION BOARDS - 待定
AD7797BRUZ-REEL 应用技术支持与电子电路设计开发资源下载
  1. AD7797 数据手册DataSheet下载 . pdf
  2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
  3. ADC模数转换器选型指南 . pdf