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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADRF6821 датащи(PDF) 27 Page - Analog Devices |
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ADRF6821 датащи(HTML) 27 Page - Analog Devices |
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27 / 61 page  Data Sheet ADRF6821 Rev. A | Page 27 of 61 Pin No. Mnemonic Description Basic Connection the resistor. 46 SPILDO_OUT_1V8 SPI 1.8 V LDO external decouple output Decouple these pins to ground using 100 pF and 0.1 µF capacitors. Place the decoupling capacitors close to the pins. 47 SDMLDO_OUT_1V8 SDM 1.8 V LDO external decouple output Auxiliary LO Output 38, 39 LO_OUT+, LO_OUT− LO outputs The differential output impedance of the buffer of the LO outputs is 50 Ω. External LO Inputs 31, 32 EXT_LO_IN+, EXT_LO_IN− External LO inputs The differential input impedance of the buffer of the external LO inputs is 100 Ω. Serial Peripheral Interface 24 SCLK SPI clock 1.8 V and 3.3 V compatible logic levels. 25 SDIO SPI data input/output in 3-wire mode and SPI data input in for 4-wire mode 1.8 V and 3.3 V compatible logic levels. 26 SDO SPI data output for 4-wire mode and this pin is not used for 3-wire mode 1.8 V and 3.3 V compatible logic levels. 27 CS SPI chip select Active low; 1.8 V and 3.3 V compatible logic levels Reset 28 RST Reset Active low; 1.8 V and 3.3 V compatible logic levels Ground 3, 5, 12, 16, 19, 52, 55 GND Ground Connect these pins to the ground of the PCB. 40 GND Charge pump ground Do not connect this pin to the paddle ground, connect this pin to the PCB ground. Exposed Pad EPAD Exposed Pad The exposed pad is on the bottom of the package. The exposed pad must be soldered to ground. |
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