NXP Semiconductors NTS0304EUK-ARD, Руководство пользователя, Страница: 10 / 29

NXP Semiconductors
UM11762
NTS0304EUK-ARD evaluation board
Figure 4. NTS0304EUK-ARD – Level translator
4.7 Digital potentiometer
The signal lines from PORT B of level translators U8 and U10 are connected to the digital
interface of U11 ( Figure 5 ). The digital potentiometer AD5161 (U11) can be controlled
through both SPI and I
2
C-bus. The bus selection is realized from the input “DIS” (pin 8)
of U11, connected to input A2 of the Arduino port. The switch U12 disables the digital
potentiometer when the loopback circuit is used. U12 is controlled from the Arduino
interface (D5). The output (wiper, pin 10) of the digital potentiometer is buffered with
UM11762 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2022. All rights reserved.
User manual Rev. 1.0 — 27 May 2022
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