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Применения > > 12-Bit ,1 MSPS, Single-Supply, Low Power Data Acquisition System

12-Bit ,1 MSPS, Single-Supply, Low Power Data Acquisition System (CN0247)

The circuit shown in Figure 1 is an ultralow, power data acquisition system using the AD7091R 12-bit, 1 MSPS SAR ADC and an AD8031 op amp driver with a total circuit power dissipation of less than 5 mW on a single 3 V supply.


The low power consumption and small package size of the selected components makes this combination an industryleading solution for portable battery-operated systems where power dissipation, cost, and size play a critical role.


The AD7091R requires typically only 350 μA of supply current on the VDD pin at 3 V, which is significantly lower than any competitive ADC offering currently available in the market. This translates to ~1 mW typical power dissipation.


The AD8031 requires only 800 μA of supply current, that results in 2.4 mW typical power dissipation at 3 V supply, making the total power dissipation of the system less than 5 mW when sampling at 1 MSPS with a 10 kHz analog input signal.



Figure 1. 12-Bit, 1 MSPS Low Power ADC with Driver (Simplified Schematic: All Connections Not Shown)


Возможности

  • 12-bit, 1MSPS Data Acquisition
  • Single Supply
  • 5mW Power

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12-Bit ,1 MSPS, Single-Supply, Low Power Data Acquisition System  CN0247

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