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DAC11001A Fiches technique(PDF) 32 Page - Texas Instruments |
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DAC11001A Fiches technique(HTML) 32 Page - Texas Instruments |
32 / 42 page 32 DAC11001A, DAC91001, DAC81001 SLASEL0 – OCTOBER 2019 www.ti.com Product Folder Links: DAC11001A DAC91001 DAC81001 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated 9.4 What to Do and What Not to Do 9.4.1 What to Do • Follow recommended grounding, decoupling, and layout schemes for achieving best accuracy. • Use a low-jitter LDAC source for best ac performance. • Choose the appropriate amplifiers depending on the application requirements as explained in above sections. 9.4.2 What Not to Do • Do not apply the reference before the DAC power supplies are powered on. • Do not use the reference source directly with the DAC reference inputs without using buffers. or else the accuracy drastically degrades. 9.5 Initialization Set Up The following text shows the pseudocode to get started with the DACx1001: //SPI Settings //Mode: Mode-1 (CPOL: 0, CPHA: 1) //CS Type: Active Low, Per Packet //Frame length: 32 //SYNTAX: WRITE <REGISTER (HEX ADDRESS>, <HEX DATA> //Select VREF, TnH mode (Good THD), LDAC mode and power-up the DAC WRITE CONFIG (0x02), 0x004C80 //Write zero code to the DAC WRITE DACDATA (0x01), 0x000000 //Write mid code to the DAC WRITE DACDATA (0x01), 0x7FFFF0 //Write full code to the DAC WRITE DACDATA (0x01), 0xFFFFF0 |
Numéro de pièce similaire - DAC11001A_V01 |
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Description similaire - DAC11001A_V01 |
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