AD7171 16-Bit, Low Power, Sigma-Delta ADC

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 135 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, dedicated pins control all of the features of the AD7171. Each time a data read occurs, eight 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, whereas the settling time is 24 ms. The AD7171 has one differential input and 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.

The AD7170 is a 12-bit version of the AD7171. It has the same feature set as the AD7171 and is pin-for-pin compatible.

Applications

Features and Benefits
  • Output data rate: 125 Hz
  • Pin-programmable power-down and reset
  • Status function
  • Internal clock oscillator
  • Current: 135 µA
  • Power supply: 2.7 V to 5.25 V
  • −40°C to +105°C temperature range
  • Package: 10-lead 3 mm × 3 mm LFCSP
  • Analog to Digital Converters
    Reference Designs
    Data Sheets
    Documentnote
    AD7171: 16-Bit, Low Power, Sigma-Delta ADC Data Sheet (Rev. C)PDF 266.27 K
    User Guides
    Documentnote
    UG-081: Evaluation Board for the AD7171 16-Bit, Low Power Sigma-Delta ADCPDF 544 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD7171BCPZ-500RL7 Production10 ld LFCSP (3x3mm)OTH 500-40 to 105C01.15Y
    AD7171BCPZ-REEL7 Production10 ld LFCSP (3x3mm)REEL 1500-40 to 105C01.15Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-AD7171EBZEvaluation Board59Y
    Reference Materials
    AD7171:16位低功耗∑-△型ADC (Rev. A) ad7171
    AD7171: 16-Bit, Low Power, Sigma-Delta ADC Data Sheet (Rev. C) ad7171
    CN0218 设计和集成文件 adr381
    CN0188 设计和集成文件 adr381
    AD7171参考代码 ad7171
    UG-081: Evaluation Board for the AD7171 16-Bit, Low Power Sigma-Delta ADC ad7171
    CN-0218:500 V共模电压电流监控器 adr381
    CN-0188: Isolated Low Side Current Monitor for Negative High Voltage Rails ad7171
    MS-2210:高速ADC的电源设计 ad9861