Figure 3-3. Analog Input Header (J6)
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
TLA2024EVM-PDK 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 the
).
CAUTION
The configuration options for the TLA2024 allow for a potential full-scale range (FSR) greater than
the supply. This 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 TLA2024 may occur if the
absolute input range is exceeded.
TLA2024EVM-PDK Overview
10
TLA2024EVM-PDK User's Guide
SBAU368 – FEBRUARY 2021
Copyright © 2021 Texas Instruments Incorporated
