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INA780B Datasheet(PDF) 13 Page - Texas Instruments

Part # INA780B
Description  INA780x 85 V, 16-Bit, Precision I2C Output Digital Power Monitor with EZShunt™ Technology
PDF  42 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

INA780B Datasheet(HTML) 13 Page - Texas Instruments

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data output rate as described. Figure 7-5 shows the filter response when the 1.052 ms conversion time period is
selected.
−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 7-5. ADC Frequency Response
7.3.5.2 Flexible Conversion Times and Averaging
ADC conversion times for bus voltage can be set independently from 50 μs to 4.12 ms. The total conversion
time for current includes an additional conversion time for temperature, and can be varied from 100 μs to
8.24 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 INA780x effective resolution of the ADC can be increased by increasing the conversion
time and increasing the number of averages. Figure 7-6 and Figure 7-7 shown below illustrate the effect of
conversion time and averaging on a constant input signal.
Number of Conversions
0
2000
4000
6000
8000
10000
Conversion Time: 50 µs
Conversion Time: 1.052 ms
Conversion Time: 4.120 ms
Figure 7-6. Noise vs Conversion Time (Averaging = 1)
Number of Conversions
0
2000
4000
6000
8000
10000
Conversion Time: 50 µs
Conversion Time: 1.052 ms
Conversion Time: 4.120 ms
Figure 7-7. Noise vs Conversion Time (Averaging = 128)
www.ti.com
INA780A, INA780B
SBOSAB6 – JULY 2023
Copyright © 2023 Texas Instruments Incorporated
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Product Folder Links: INA780A INA780B



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