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INA229 датащи(PDF) 15 Page - Texas Instruments |
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INA229 датащи(HTML) 15 Page - Texas Instruments |
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15 / 48 page ![]() −60 −50 −40 −30 −20 −10 0 1 10 100 1k 10k 100k Frequency (Hz) G001 Conversion time = 1.052 ms, single conversion only Figure 7-3. ADC Frequency Response 7.3.4.2 Flexible Conversion Times and Averaging ADC conversion times for shunt voltage, bus voltage and temperature can be set independently from 50 μs to 4.12 ms. The flexibility in conversion time allows for robust operation in a variety of noisy environments. The device also allows for programmable averaging times from a single conversion all the way to an average of 1024 conversions. The amount of averaging selected applies uniformly to all active measurement inputs. The ADC_CONFIG register shown in Table 7-6 provides additional details on the supported conversion times and averaging modes. The INA229-Q1 effective resolution of the ADC can be increased by increasing the conversion time and increasing the number of averages. Figure 7-4 and Figure 7-5 shown below illustrate the effect of conversion time and averaging on a constant input signal. Figure 7-4. Noise vs Conversion Time (Averaging = 1) Figure 7-5. Noise vs. Conversion Time (Averaging = 128) www.ti.com INA229-Q1 SLYS024A – MAY 2020 – REVISED JUNE 2021 Copyright © 2021 Texas Instruments Incorporated Submit Document Feedback 15 Product Folder Links: INA229-Q1 |
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