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AD7175-2BRUZ-RL7 Scheda tecnica(PDF) 11 Page - Analog Devices |
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AD7175-2BRUZ-RL7 Scheda tecnica(HTML) 11 Page - Analog Devices |
11 / 63 page Data Sheet AD7175-2 Rev. A | Page 11 of 63 Product Overview Online Documentation Design Resources Discussion Sample & Buy Pin No. Mnemonic Type1 Description 15 SYNC/ERROR DI/O Synchronization Input/Error Input/Output. This pin can be switched between a logic input and a logic output in the GPIOCON register. When synchronization input (SYNC) is enabled, this pin allows synchronization of the digital filters and analog modulators when using multiple AD7175-2 devices. For more information, see the Synchronization section. When the synchronization input is disabled, this pin can be used in one of three modes: Active low error input mode: this mode sets the ADC_ERROR bit in the status register. Active low, open-drain error output mode: the status register error bits are mapped to the ERROR output. The SYNC/ERROR pins of multiple devices can be wired together to a common pull-up resistor so that an error on any device can be observed. General-purpose output mode: the status of the pin is controlled by the ERR_DAT bit in the GPIOCON register. The pin is referenced between IOVDD and DGND, as opposed to the AVDD1 and AVSS levels used by the GPIOx pins. The pin has an active pull-up in this case. 16 IOVDD P Digital I/O Supply Voltage. The IOVDD voltage ranges from 2 V to 5 V. IOVDD is independent of AVDD2. For example, IOVDD can be operated at 3 V when AVDD2 equals 5 V, or vice versa. If AVSS is set to −2.5 V, the voltage on IOVDD must not exceed 3.6 V. 17 DGND P Digital Ground. 18 REGCAPD AO Digital LDO Regulator Output. This pin is for decoupling purposes only. Decouple this pin to DGND using a 1 µF and a 0.1 µF capacitor. 19 GPIO0 DI/O General-Purpose Input/Output 0. The pin is referenced between AVDD1 and AVSS levels. 20 GPIO1 DI/O General-Purpose Input/Output 1. The pin is referenced between AVDD1 and AVSS levels. 21 AIN0 AI Analog Input 0. Selectable through the crosspoint multiplexer. 22 AIN1 AI Analog Input 1. Selectable through the crosspoint multiplexer. 23 AIN2 AI Analog Input 2. Selectable through the crosspoint multiplexer. 24 AIN3 AI Analog Input 3. Selectable through the crosspoint multiplexer. 1 AI is analog input, AO is analog output, DI/O is bidirectional digital input/output, DO is digital output, DI is digital input, and P is power supply. |
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