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AD5447YRU-REEL Datasheet(PDF) 9 Page - Analog Devices |
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AD5447YRU-REEL Datasheet(HTML) 9 Page - Analog Devices |
9 / 32 page Data Sheet AD5428/AD5440/AD5447 Rev. C | Page 9 of 32 R/W CS 1 2 3 4 5 6 7 8 9 10 20 21 22 23 24 19 18 17 16 15 14 13 12 11 IOUTA RFBA VREFA DB11 DAC A/B DGND AGND RFBB VREFB VDD DB0 (LSB) DB10 DB9 DB6 DB7 DB8 DB1 DB2 DB5 DB4 DB3 IOUTB AD5447 TOP VIEW (Not to Scale) Figure 6. Pin Configuration 24-Lead TSSOP (RU-24) Table 6. AD5447 Pin Function Descriptions Pin No. Mnemonic Description 1 AGND DAC Ground Pin. This pin should typically be tied to the analog ground of the system, but can be biased to achieve single-supply operation. 2, 24 IOUTA, IOUTB DAC Current Outputs. 3, 23 RFBA, RFBB DAC Feedback Resistor Pins. Establish voltage output for the DAC by connecting to an external amplifier output. 4, 22 VREFA, VREFB DAC Reference Voltage Input Terminals. 5 DGND Digital Ground Pin. 6 DAC A/B Selects DAC A or DAC B. Low selects DAC A; high selects DAC B. 7 to 18 DB11 to DB0 Parallel Data Bits 11 Through 0. 19 CS Chip Select Input. Active low. Used in conjunction with R/W to load parallel data to the input latch or to read data from the DAC register. 20 R/W Read/Write. When low, used in conjunction with CS to load parallel data. When high, used in conjunction with CS to read back the contents of the DAC register. When CS and R/W are held low, the latches are transparent. Any changes on the data lines are reflected in the relevant DAC output. 21 VDD Positive Power Supply Input. This part can be operated from a supply of 2.5 V to 5.5 V. |
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