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ADS7044: 1Ksps Current Numbers

Part Number: ADS7044


I'm looking for the current draw numbers on the ADS7044 at 1Ksps with an Avdd of 3V.  Figure 30 in the datasheet helps but its tough to estimate a number from it. 



  • Hi Jake,

    For AVDD=3V and 1kSPS throughput, the correct graph to look at would be Figure 27.

    As you can see in Figure 27, the current scales linearly with throughput. The throughput dependent current of the device will be approximately 300-nA (computed using Figure 27). Also as per the electrical characteristics table on page 3,

    Throughput Iavdd
    1000 kSPS 300uA
    100 kSPS 30uA

    Hence, at 1 kSPS, Iavdd will be ~300nA.

    At such low currents, it is important to note that leakage currents into the digital pins will be significant as compared to device active current.