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DAC1280 Datasheet(PDF) 10 Page - Texas Instruments |
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DAC1280 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 24 page -90 95 100 105 110 115 120 125 130 135 - - - - - - - - - 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 CLK (MHz) G = 1/1 G = 1/2 G = 1/4 G = 1/8 G = 1/16 G = 1/32 G = 1/64 f = CLK/2 , 0.5dBFS - O 17 THD resolution of low gains limited by FFT size CLK (MHz) 125 120 115 110 105 100 95 90 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 CLK (MHz) G = 1/1 G = 1/2 G = 1/4 G = 1/8 G = 1/16 G = 1/32 G = 1/64 f = CLK/2 , 0.5dBFS - O 17 - - - - - - - - 95 100 105 110 115 120 125 130 135 - 3.5 4.0 4.5 5.0 5.2 Reference Voltage (V) G = 1/1 G = 1/2 G = 1/4 G = 1/8 G = 1/16 G = 1/32 G = 1/64 2.5 3.0 125 120 115 110 105 100 95 90 85 3.5 4.0 4.5 5.0 5.2 Reference Voltage (V) 2.5 3.0 G = 1/1 G = 1/2 G = 1/4 G = 1/8 G = 1/16 G = 1/32 G = 1/64 4 3 2 1 0 -55 -35 -15 5 25 45 65 85 105 125 Temperature ( C) ° G = 1/1 G = 1/2 G = 1/4 G = 1/8 G = 1/16 G = 1/32 G = 1/64 20 15 10 5 0 Total Harmonic Distortion (dB) 30 Units G = 1/1 G = 1/4 G = 1/16 G = 1/64 DAC1280 SBAS432A – APRIL 2010 – REVISED SEPTEMBER 2010 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = +25°C, AVDD = +2.5V, AVSS = +2.5V, DVDD = +3.3V, CLK = 4.096MHz, VREF = +5V, and RREF = 30kΩ, unless otherwise noted. Data acquired using circuit configuration shown in Figure 35. THD and SNR measured by ADS1282 (1ms sampling and complement gain setting). THD vs CLK SNR vs CLK Figure 20. Figure 21. THD vs VREF SNR vs VREF Figure 22. Figure 23. ANALOG POWER-SUPPLY CURRENT vs THD HISTOGRAM TEMPERATURE Figure 24. Figure 25. 10 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): DAC1280 |
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