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AD1862 Folha de dados(PDF) 9 Page - Analog Devices |
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AD1862 Folha de dados(HTML) 9 Page - Analog Devices |
9 / 12 page AD1862 –9– REV. A The AD1862 is an extremely high performance DAC designed for high-end consumer and professional digital audio applica- tions. Compact disc players, digital preamplifiers, digital musi- cal instruments and sound processors benefit from the extended dynamic range, low THD+Noise and high signal-to-noise ratio. For the first time, the D/A converter is no longer the basic limi- tation in the performance of a CD player. The performance of professional audio gear, such as mixing consoles, digital tape recorders and multivoice synthesizers can utilize the wide dynamic range and signal-to-noise ratio to achieve greater performance. And, the AD1862’s space saving 16-pin package contributes to compact system design. This per- mits a system designer to incorporate more voices in multivoice synthesizers, more tracks in multitrack tape recorders and more channels in multichannel mixing consoles. Furthermore, high-resolution signal processing and waveform generation applications are equally well served by the AD1862. HIGH PERFORMANCE CD PLAYER Figure 13 illustrates the application of AD1862s in a high per- formance CD player. Two AD1862s are used, one for the left channel and one for the right channel. The CXD11XX chip de- codes the digital data coming from the read electronics and sends it to the SM5813. Input data is sent to each AD1862 by the SM5813 digital interpolating filter. This device operates at 8 times oversampling. The NE5534 op amps are chosen for current-to-voltage converters due to their low distortion and low noise. The output filters are 5-pole designs. For the purpose of clarity, all bypass capacitors have been omitted from the schematic. 5V DIGITAL SUPPLY NE5534 LEFT CHANNEL OUTPUT RIGHT CHANNEL OUTPUT 5V DIGITAL SUPPLY – 16.9344MHz XTI XTO DOL CKO BCKO WCKO DOR BCKI DIN LRCI SM5813 XTAI LRCK DATA C210 SLOB PSSL SONY CXD1125 1130 1135 OW20 CKDV LOW PASS FILTER 10 µF 1 µF 12V ANALOG SUPPLY 1 2 3 4 5 6 7 89 10 11 12 13 14 15 16 LOW PASS FILTER 10 µF 1 µF 12V ANALOG SUPPLY 1 2 3 4 5 6 7 89 10 11 12 13 14 15 16 12V ANALOG SUPPLY – NE5534 + + + + V + L LE V – S TRIM CLK DATA V – L V – S V + S NR 2 ADJ NR 1 AGND I OUT R F DGND AD1862 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 13. High Performance 20-Bit 8 × Oversampling CD Player Application |
Nº de peça semelhante - AD1862 |
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Descrição semelhante - AD1862 |
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