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Input Signal-Conditioning Block on the BP-ADS7128
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24 SBAU331 – May 2019
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BP-ADS7128 BoosterPack™ Plug-In Module
3.3.5.2 Digital I/O Page
The digital I/O page displays the enabled digital input channels as configured in Section 3.3.2.1 . In the
example shown in Figure 25 , two channels were configured as digital input channels. Each channel
indicates the present logic state, followed by an icon demonstrating the triggering edge for a state change,
rising edge of falling edge. The icon turns red when triggered.
Figure 25. Digital I/O Page Display
4 Input Signal-Conditioning Block on the BP-ADS7128
For applications where the input signal requires additional conditioning before being interfaced to the ADC,
the BP-ADS7128 has an onboard signal-conditioning path on channel 0 between the input signal and the
ADS7128. By default, this signal-conditioning block is populated on the evaluation board as a noninverting
buffer. The board has a provision to bypass the operational amplifier (U4) based on the signal conditioning
requirement. In order to bypass this block, remove the R25 0-
Ω resistor and populate R10. See
Section 5.3 for more details.