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AD7177-2BRUZ Arkusz danych(PDF) 11 Page - Analog Devices |
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AD7177-2BRUZ Arkusz danych(HTML) 11 Page - Analog Devices |
11 / 59 page Data Sheet AD7177-2 Rev. A | Page 11 of 59 Pin No. Mnemonic Type2 Description 15 SYNC/ERROR DI/O Synchronization Input/Error Input or Output. This pin can be switched between a logic input and a logic output in the GPIOCON register. When the synchronization input (SYNC) is enabled, this pin allows synchronization of the digital filters and analog modulators when using multiple AD7177-2 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 circuit in this case. 16 IOVDD P Digital I/O Supply Voltage. The IOVDD voltage ranges from 2 V to 5.5 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. This pin is selectable through the crosspoint multiplexer. 22 AIN1 AI Analog Input 1. This pin is selectable through the crosspoint multiplexer. 23 AIN2 AI Analog Input 2. This pin is selectable through the crosspoint multiplexer. 24 AIN3 AI Analog Input 3. This pin is selectable through the crosspoint multiplexer. 1 Note that, throughout this data sheet, the dual function pin names are referenced by the relevant function only. 2 AI is analog input, AO is analog output, P is power supply, DI is digital input, DO is digital output, and DI/O is bidirectional digital input/output. |
Podobny numer części - AD7177-2BRUZ |
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Podobny opis - AD7177-2BRUZ |
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