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AD9854AST Datasheet(PDF) 9 Page - Analog Devices |
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AD9854AST Datasheet(HTML) 9 Page - Analog Devices |
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9 / 52 page  AD9854 Rev. E | Page 9 of 52 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 80 79 78 77 76 71 70 69 68 75 74 73 72 21 22 23 24 25 26 27 28 29 30 31 32 33 1 2 3 4 5 6 7 8 9 10 11 13 12 60 59 58 57 56 55 54 53 52 51 50 49 48 NC = NO CONNECT AD9854 TOP VIEW (Not to Scale) D7 D6 D5 D4 D3 D2 D1 D0 DVDD DVDD DGND DGND NC AVDD AGND NC NC DAC RSET DACBP AVDD AGND IOUT2 IOUT2 AVDD IOUT1 IOUT1 PIN 1 INDICATOR 14 15 16 17 18 20 19 47 46 45 44 43 42 41 A5 A4 A3 A2/IO RESET A1/SDO A0/SDIO I/O UD CLK AGND AGND AGND AVDD VINN VINP AGND 64 63 62 61 67 66 65 34 35 36 37 38 39 40 Figure 2. Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 to 8 D7 to D0 8-Bit Bidirectional Parallel Programming Data Inputs. Used only in parallel programming mode. 9, 10, 23, 24, 25, 73, 74, 79, 80 DVDD Connections for the Digital Circuitry Supply Voltage. Nominally 3.3 V more positive than AGND and DGND. 11, 12, 26, 27, 28, 72, 75 to 78 DGND Connections for the Digital Circuitry Ground Return. Same potential as AGND. 13, 35, 57, 58, 63 NC No Internal Connection. 14 to 16 A5 to A3 Parallel Address Inputs for Program Registers (Part of 6-Bit Parallel Address Inputs for Program Register, A5:A0). Used only in parallel programming mode. 17 A2/IO RESET Parallel Address Input for Program Registers (Part of 6-Bit Parallel Address Inputs for Program Register, A5:A0)/IO Reset. A2 is used only in parallel programming mode. IO RESET is used when the serial programming mode is selected, allowing an IO RESET of the serial communication bus that is unresponsive due to improper programming protocol. Resetting the serial bus in this manner does not affect previous programming, nor does it invoke the default programming values listed in Table 8. Active high. 18 A1/SDO Parallel Address Input for Program Registers (Part of 6-Bit Parallel Address Inputs for Program Register, A5:A0)/Unidirectional Serial Data Output. A1 is used only in parallel programming mode. SDO is used in 3-wire serial communication mode when the serial programming mode is selected. 19 A0/SDIO Parallel Address Input for Program Registers (Part of 6-Bit Parallel Address Inputs for Program Register, A5:A0)/Bidirectional Serial Data I/O. A0 is used only in parallel programming mode. SDIO is used in 2-wire serial communication mode. |
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