JAJSOF3A May 2023 – September 2023 INA700
PRODUCTION DATA
The INA700 noise performance and effective resolution depend on the ADC conversion time. The device also supports digital averaging which can further help decrease digital noise. The flexibility of the device to select ADC conversion time and data averaging offers increased signal-to-noise ratio and achieves the highest dynamic range with lowest offset. The profile of the noise at lower signals levels is dominated by the system noise that is comprised mainly of 1/f noise or white noise. The INA700 effective resolution of the ADC can be increased by increasing the conversion time and increasing the number of averages.
Table 8-2 shows the output data rate conversion settings supported by the device. The fastest conversion setting is 50 µs. Typical noise-free resolution is represented as Effective Number of Bits (ENOB) based on device measured data. The ENOB is calculated based on noise peak-to-peak values, which takes full noise distribution into consideration. The conversion time for the temperature measurement is set to the power-on default value.
ADC CONVERSION TIME PERIOD [µs] | OUTPUT SAMPLE AVERAGING [SAMPLES] | OUTPUT SAMPLE PERIOD [ms] | NOISE-FREE ENOB CURRENT MEASUREMENT |
---|---|---|---|
50 | 1 | 0.05 | 10.1 |
84 | 0.084 | 10.6 | |
150 | 0.15 | 10.8 | |
280 | 0.28 | 11.2 | |
540 | 0.54 | 12 | |
1052 | 1.052 | 12.5 | |
2074 | 2.074 | 12.8 | |
4120 | 4.12 | 13.3 | |
50 | 4 | 0.2 | 11.0 |
84 | 0.336 | 11.6 | |
150 | 0.6 | 11.8 | |
280 | 1.12 | 12.5 | |
540 | 2.16 | 12.9 | |
1052 | 4.208 | 13.1 | |
2074 | 8.296 | 14.1 | |
4120 | 16.48 | 14.7 | |
50 | 16 | 0.8 | 12.3 |
84 | 1.344 | 12.3 | |
150 | 2.4 | 13.1 | |
280 | 4.48 | 13.5 | |
540 | 8.64 | 13.9 | |
1052 | 16.832 | 14.7 | |
2074 | 33.184 | 14.7 | |
4120 | 65.92 | 15.2 | |
50 | 64 | 3.2 | 13.4 |
84 | 5.376 | 13.4 | |
150 | 9.6 | 13.9 | |
280 | 17.92 | 14.4 | |
540 | 34.56 | 14.7 | |
1052 | 67.328 | 15.7 | |
2074 | 132.736 | 15.7 | |
4120 | 263.68 | 15.9 | |
50 | 128 | 6.4 | 13.5 |
84 | 10.752 | 13.5 | |
150 | 19.2 | 14.7 | |
280 | 35.84 | 14.7 | |
540 | 69.12 | 15.2 | |
1052 | 134.656 | 15.7 | |
2074 | 265.472 | 16 | |
4120 | 527.36 | 16 | |
50 | 256 | 12.8 | 14.4 |
84 | 21.504 | 14.4 | |
150 | 38.4 | 14.7 | |
280 | 71.68 | 15.2 | |
540 | 138.24 | 15.9 | |
1052 | 269.312 | 16 | |
2074 | 530.944 | 16 | |
4120 | 1054.72 | 16 | |
50 | 512 | 25.6 | 14.4 |
84 | 43 | 14.7 | |
150 | 76.8 | 15.7 | |
280 | 143.36 | 15.9 | |
540 | 276.48 | 16 | |
1052 | 538.624 | 16 | |
2074 | 1061.888 | 16 | |
4120 | 2109.44 | 16 | |
50 | 1024 | 51.2 | 15.2 |
84 | 86.016 | 15.2 | |
150 | 153.6 | 15.7 | |
280 | 286.72 | 16 | |
540 | 552.96 | 16 | |
1052 | 1077.248 | 16 | |
2074 | 2123.776 | 16 | |
4120 | 4218.88 | 16 |