AD7793BRUZ-REEL:  3通道、低噪声、低功耗、24位Σ-Δ型ADC,内置片内仪表放大器和基准电压源

AD7792/AD7793均为适合高精度测量应用的低功耗、低噪声、完整模拟前端,内置一个低噪声16位/24位Σ-Δ型ADC,其中含有3个差分模拟输入,还集成了片内低噪声仪表放大器,因而可直接输入小信号。当增益设置为64、更新速率为4.17 Hz时,均方根(RMS)噪声为40 nV。

两款器件均内置一个精密低噪声、低漂移内部带隙基准电压源,而且也可采用一个外部差分基准电压。其它片内特性包括可编程激励电流源、熔断电流控制和偏置电压产生器。利用偏置电压产生器可将某一通道的共模电压设置为AVDD/2。AD7792/AD7793可以采用内部时钟或外部时钟工作,输出数据速率可通过软件编程设置,可在4.17 Hz至470 Hz的范围内变化。AD7792/AD7793采用2.7 V至5.25 V电源供电,典型功耗为400 µA,采用16引脚TSSOP封装。

The AD7792/AD7793 are low power, low noise, complete analog front ends for high precision measurement applications. The AD7792/AD7793 contain a low noise 16-/24-bit Σ-Δ ADC with three differential analog inputs. The on-chip, low noise instrumentation amplifier means that signals of small amplitude can be interfaced directly to the ADC. With a gain setting of 64, the rms noise is 40 nV when the update rate equals 4.17 Hz.

The devices contain a precision low noise, low drift internal band gap reference and can accept an external differential reference. Other on-chip features include programmable excitation current sources, burnout currents, and a bias voltage generator. The bias voltage generator sets the common-mode voltage of a channel to AVDD/2.

The devices can be operated with either the internal clock or an external clock. The output data rate from the parts is software-programmable and can be varied from 4.17 Hz to 470 Hz.

The parts operate with a power supply from 2.7 V to 5.25 V. They consume a current of 400 μA typical and are housed in a 16-lead TSSOP package.

产品应用领域 Applications
产品应用领域 Applications
AD7793BRUZ-REEL 特点
AD7793BRUZ-REEL 功能框图

AD7793 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
AD7793BRU Prodn 16 ld TSSOP 16 工业
AD7793BRUZ Prodn 16 ld TSSOP 16 工业
AD7793BRUZ-REEL Prodn 16 ld TSSOP 16 工业
EVAL-AD7793EBZ Prodn EVALUATION BOARDS - 待定
AD7793BRUZ-REEL 应用技术支持与电子电路设计开发资源下载
  1. AD7793 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