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ADA8282 Datasheet(PDF) 8 Page - Analog Devices |
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ADA8282 Datasheet(HTML) 8 Page - Analog Devices |
8 / 27 page AD8283 Data Sheet Rev. C | Page 8 of 27 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NC DSYNC PDWN DVDD18 SCLK SDIO CS AUX MUXA ZSEL TEST1 TEST2 DVDD33SPI AVDD18 AVDD33A INA– 17 INA+ 18 NC 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 NC TEST4 DVDD18CLK CLK+ CLK– DVDD33CLK AVDD33REF VREF RBIAS BAND APOUT ANOUT TEST3 AVDD18ADC AVDD18 INADC+ INADC– NC NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. 2. THE EXPOSED PADDLE SHOULD BE TIED TO ANALOG/DIGITAL GROUND PLANE. PIN 1 INDICATOR AD8283 (TOP VIEW) Figure 3. Table 6. Pin Function Descriptions Pin No. Name Description 0 GND Ground. Exposed paddle on the bottom side; should be tied to the analog/digital ground plane. 1 NC No Connection. Pin can be tiedto any potential. 2 DSYNC Data Out Synchronization. 3 PDWN Full Power-Down. Logic high overrides SPI and powers down the part, logic low allows selectionthrough SPI. 4 DVDD18 1.8 V Digital Supply. 5 SCLK Serial Clock. 6 SDIO Serial Data Input/Output. 7 CS Chip Select Bar. 8 AUX Logic high forces to Channel ADC (INADC+/INADC−); AUX has a higher priority than MUXA. 9 MUXA Logic high forces to Channel A unless AUX is asserted. 10 ZSEL Input Impedance Select. Logic high overrides SPI and sets it to 200 kΩ; logic low allows selectionthrough SPI. 11 TEST1 Pin should not be used; tie to ground. 12 TEST2 Pin should not be used; tie to ground. 13 DVDD33SPI 3.3 V Digital Supply, SPI Port. 14 AVDD18 1.8 V Analog Supply. 15 AVDD33A 3.3 V Analog Supply, Channel A. 16 INA− Negative LNA Analog Input for Channel A. 17 INA+ Positive LNA Analog Input for Channel A. 18 NC No Connect. Pin can be tiedto any potential. 19 NC No Connect. Pin can be tiedto any potential. 20 NC No Connect. Pin can be tiedto any potential. 21 AVDD33B 3.3 V Analog Supply, Channel B. 22 INB− Negative LNA Analog Input for Channel B. 23 INB+ Positive LNA Analog Input for Channel B. 24 AVDD33C 3.3 V Analog Supply, Channel C. 25 INC− Negative LNA Analog Input for Channel C. 26 INC+ Positive LNA Analog Input for Channel C. |
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