DAC5682Z datasheet(32/59 Pages) TI

Part #	DAC5682Z

Description	16-BIT, 1.0 GSPS 2x-4x INTERPOLATING DUAL-CHANNEL DIGITAL-TO-ANALOG CONVERTER (DAC)

PDF	59 Pages

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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FIR FILTERS

DAC5682Z

SLLS853C – AUGUST 2007 – REVISED JUNE 2009 ........................................................................................................................................................ www.ti.com

Figure 29 shows the magnitude spectrum response for the identical 47-tap FIR0 and FIR1 filters. The transition

band is from 0.4 to 0.6 × FIN (the input data rate for the FIR filter) with <0.002 dB of pass-band ripple and

approximately 76dB of stop-band attenuation. Figure 30 shows the region from 0.35 to 0.45 × FIN – up to 0.44x

FIN there is less than 0.4 dB attenuation. The composite spectrum for x4 interpolation mode, the cascaded

response of FIR0 and FIR1, is shown in Figure 31. The filter taps for both FIR0 and FIR1 are listed in Table 5.

Figure 29. Magnitude Spectrum for FIR0 and FIR1

Figure 30. FIR0 and FIR1 Transition Band

Figure 31. Magnitude Composite Spectrum for 4x Interpolation Mode

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