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CS4272 Datasheet(PDF) 33 Page - Cirrus Logic |
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CS4272 Datasheet(HTML) 33 Page - Cirrus Logic |
33 / 53 page CS4272 DS593F1 33 5.4.2 Output Connections The recommended output filter configuration is shown in Figure 14. This filter configuration accounts for the normally differing AC loads on the AOUT+ and AOUT- differential output pins. It also shows an AC coupling configuration which minimizes the number of required AC coupling capacitors. The CS4272 does not include phase or amplitude compensation for an external filter, and therefore the DAC system phase and amplitude response will be dependent on the external analog circuitry. Figure 15 shows the full-scale an- alog output levels. AOUT+ AOUT- - + 470 pF C0G CS4272 560 Ω 22 µF 4.99 k Ω 2200 pF C0G 715 Ω 2.32 k Ω 4.42 k Ω 1.33 k Ω 1.50 k Ω 22 µF 1.5 nF C0G 6.8 nF C0G 47 k Ω Analog Out Figure 14. CS4272 Recommended Analog Output Filter CS4272 AOUT+ AOUT- Full-Scale Output Level= (AIN+) - (AIN-)= 5 Vpp 3.75 V 2.5 V 1.25 V 3.75 V 2.5 V 1.25 V Figure 15. Full-Scale Analog Output |
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