Texas Instruments ADS1x15V2EVM-PDK, Руководство пользователя

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Each analog input includes a single-order, low-pass filter. The single-ended input filter cutoff frequency is
67.9 kHz. Up to four separate single-ended measurements are possible.
Instead of single-ended measurements, up to two differential input pair combinations are possible. The filter
design for the differential input pair filtering has a cutoff frequency of 3.4 kHz. The filter is populated on the
ADS1x15EVM for input pair combinations of AIN0 and AIN1 or AIN2 and AIN3. The input combination of AIN1
and AIN2 is possible by adding a 47-nF capacitor at C6 (see location in
Figure 6-5 ).
CAUTION
The configuration options for the ADS1x15 allow for a potential full-scale range (FSR) greater than
the supply. This increased range is useful when an input voltage slightly exceeds the next lower
FSR. However, the input voltage should not exceed the range of the VDD supply selected at JP1.
The absolute input voltage is bounded by VDD + 0.3 V and GND – 0.3 V. Damage to the ADS1x15
may occur if the absolute input range is exceeded.
ADS1x15EVM Overview www.ti.com
10 ADS1x15V2EVM-PDK User's Guide SBAU362 – MARCH 2021
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