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AD7792BRUZ: 3通道、低噪声、低功耗、16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 uA,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
AD7792BRUZ 特点
AD7792BRUZ 功能框图

AD7792 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
AD7792BRU Prodn 16 ld TSSOP 16 工业
AD7792BRUZ Prodn 16 ld TSSOP 16 工业
AD7792BRUZ-REEL Prodn 16 ld TSSOP 16 工业
EVAL-AD7792EBZ Prodn EVALUATION BOARDS - 待定
AD7792BRUZ 应用技术支持与电子电路设计开发资源下载
  1. AD7792 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