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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AD7172-4BCPZ-RL7 데이터시트(PDF) 11 Page - Analog Devices |
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AD7172-4BCPZ-RL7 데이터시트(HTML) 11 Page - Analog Devices |
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11 / 62 page  AD7172-4 Data Sheet Rev. B | Page 10 of 61 Pin No. Mnemonic Type1 Description 14 CS DI Chip Select Input. This is an active low logic input used to select the ADC. CS can be used to select the ADC in systems with more than one device on the serial bus. CS can be hardwired low, allowing the ADC to operate in 3-wire mode with the SCLK, DIN, and DOUT pins interfacing with the device. When CS is high, the DOUT/RDY output is tristated. 15 ERROR DI/O This pin can be used in one of the following 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 pin. The 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 GPIO0 and GPIO1 pins. The ERROR pin has an active pull-up in this case. 16 SYNC DI Synchronization Input. This pin allows synchronization of the digital filters and analog modulators when using multiple AD7172-4 devices. 17 IOVDD P Digital Input/Output Supply Voltage. The IOVDD voltage ranges from 2 V to 5 V. IOVDD is independent of AVDD1 and AVDD2. For example, IOVDD can be operated at 3.3 V when AVDD1 or 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. 18 DGND P Digital Ground. 19 REGCAPD AO Digital LDO Regulator Output. This pin is for decoupling purposes only. Decouple this pin to DGND using a 1 μF capacitor. 20 GPIO0 I/O General-Purpose Input/Output. 0 The logic input/output on this this pin is referred to the AVDD1 and AVSS supplies. 21 GPIO1 I/O General-Purpose Input/Output 1. The logic input/output on this this pin is referred to the AVDD1 and AVSS supplies. 22 GPO2 O General-Purpose Output. The logic output on this this pin is referred to the AVDD1 and AVSS supplies. 23 AIN2 AI Analog Input 2. Analog Input 2 is selectable through the crosspoint multiplexer. 24 AIN3 AI Analog Input 3. Analog Input 3 is selectable through the crosspoint multiplexer. 25 AIN4 AI Analog Input 4. Analog Input 4 is selectable through the crosspoint multiplexer. 26 AIN5 AI Analog Input 5. Analog Input 5 is selectable through the crosspoint multiplexer. 27 AIN6 AI Analog Input 6. Analog Input 6 is selectable through the crosspoint multiplexer. 28 AIN7 AI Analog Input 7. Analog Input 7 is selectable through the crosspoint multiplexer. 29 AIN8 AI Analog Input 8. Analog Input 8 is selectable through the crosspoint multiplexer. 30 GPO3 O General-Purpose Output. The logic output on this this pin is referred to the AVDD1 and AVSS supplies. 31 REF− AI Reference 1 Input Negative Terminal. REF− can span from AVSS to AVDD1 − 1 V. Reference 1 can be selected through the REF_SELx bits in the setup configuration (SETUPCONx) registers. 32 REF+ AI Reference 1 Input Positive Terminal. A reference can be applied between REF+ and REF−. REF+ can span from AVDD1 to AVSS + 1 V. Reference 1 can be selected through the REF_SELx bits in the setup configuration (SETUPCONx) registers. EP P Exposed Pad. Solder the exposed pad to a similar pad on the printed circuit board (PCB) under the exposed pad to confer mechanical strength to the package and for heat dissipation. The exposed pad must be connected to AVSS through this pad on the PCB. 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, I/O is input/output, and O is output. |
유사한 부품 번호 - AD7172-4BCPZ-RL7 |
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유사한 설명 - AD7172-4BCPZ-RL7 |
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