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AD9744 Scheda tecnica(PDF) 20 Page - Analog Devices |
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AD9744 Scheda tecnica(HTML) 20 Page - Analog Devices |
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20 / 32 page ![]() AD9744 Rev. B | Page 20 of 32 EVALUATION BOARD GENERAL DESCRIPTION The TxDAC family evaluation boards allow for easy setup and testing of any TxDAC product in the SOIC and LFCSP pack- ages. Careful attention to layout and circuit design, combined with a prototyping area, allows the user to evaluate the AD9744 easily and effectively in any application where high resolution, high speed conversion is required. This board allows the user the flexibility to operate the AD9744 in various configurations. Possible output configurations in- clude transformer coupled, resistor terminated, and single and differential outputs. The digital inputs are designed to be driven from various word generators, with the on-board option to add a resistor network for proper load termination. Provisions are also made to operate the AD9744 with either the internal or external reference or to exercise the power-down feature. RP5 OPT 16 1 RP3 22 Ω DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 DB13X DB12X DB11X DB10X DB9X DB8X DB7X DB6X DB5X DB4X DB3X DB2X DB1X DB0X 15 2 RP3 22 Ω 14 3 RP3 22 Ω 13 4 RP3 22 Ω 12 5 RP3 22 Ω 11 6 RP3 22 Ω 10 7 RP3 22 Ω 9 8 RP3 22 Ω 16 1 RP4 22 Ω 15 2 RP4 22 Ω 14 3 RP4 22 Ω 13 4 RP4 22 Ω 12 5 RP4 22 Ω 11 6 RP4 22 Ω 9 8 RP4 22 Ω 10 7 RP4 22 Ω CKEXT CKEXTX RP6 OPT RP1 OPT RP2 OPT 21 DB13X 4 3 DB12X 65 DB11X 87 DB10X 10 9 DB9X 12 11 DB8X 14 13 DB7X 16 15 DB6X 18 17 DB5X 20 19 DB4X 22 21 DB3X 24 23 DB2X 26 25 DB1X 28 27 DB0X 30 29 32 31 34 33 CKEXTX 36 35 38 37 40 39 JP3 J1 RIBBON TB1 1 TB1 2 L2 BEAD C7 0.1 µF TP4 BLK + DVDD TP7 C6 0.1 µF C4 10 µF 25V BLK BLK TP8 TP2 RED TB1 3 TB1 4 L3 BEAD C9 0.1 µF TP6 BLK + AVDD TP10 C8 0.1 µF C5 10 µF 25V BLK BLK TP9 TP5 RED Figure 41. SOIC Evaluation Board—Power Supply and Digital Inputs |
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