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AD1862 Datasheet(PDF) 10 Page - Analog Devices |
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AD1862 Datasheet(HTML) 10 Page - Analog Devices |
10 / 12 page AD1862 –10– REV. A HIGH-RESOLUTION SIGNAL PROCESSING Figure 14 illustrates the AD1862 combined with the DSP56000. In high-resolution applications, the combination of the 24-bit architecture of the DSP56000 and the low noise and high reso- lution of the AD1862 can produce a high-resolution, low-noise system. As shown in Figure 14, the clock signal supplied by the DSP processor must be inverted to be compatible with the input of the AD1862. The exact architecture of the output low-pass filter depends on the sample rate of the output data. In general, the higher the oversampling rate, the fewer number of filter poles are required to prevent aliasing. The 20-bit resolution is particularly suitable for professional au- dio, mixing or equalization equipment. Its resolution allows 24 dB of equalization to be performed on 16-bit input words without signal truncation. Furthermore, up to sixteen 16-bit in- put words can be mixed and output directly to the AD1862. In this case, no loss of signal information would be encountered. 1 2 3 4 5 6 7 89 10 11 12 13 14 15 16 LOW PASS FILTER OUTPUT VOLTAGE 0.1 µF 0.1 µF 0.1 µF 5V DIGITAL SUPPLY – 12V ANALOG SUPPLY – 12V ANALOG SUPPLY 0.1 µF 10 µF AD846 ANALOG COMMON DIGITAL COMMON 5V DIGITAL SUPPLY V CC SCK SC2 STD V DD DSP56001 1 µF AD1862 V + S NR 2 ADJ NR 1 AGND I OUT R F DGND V + L LE V – S TRIM CLK DATA V – L V – S Figure 14. DSP56001 and AD1862 Produce High Resolution Signal Processing System OBSOLETE |
Similar Part No. - AD1862_15 |
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Similar Description - AD1862_15 |
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