THS8200 Datasheet, PDF (26/97 Pages) Texas Instruments – ALL FORMAT OVERSAMPLED COMPONENT VIDEO/PC GRAPHICS D/A SYSTEM WITH THREE 11-BIT DACS,CGMS DATA INSERTION

4.6 Interpolating Finite Impulse Response Filter (IFIR)
For relaxing the requirements of the reconstruction filter behind the DAC in the analog domain, and in order to take
advantage of the high-speed capability of the DACs in THS8200, a 2× digital up-sampling and interpolation filter
module is integrated.
Figure 4–8 through Figure 4–11 show the YRGB and CbCr filtering requirements for HDTV (SMPTE274M/296M
standards) and SDTV (ITU-R.BT601 standard), respectively.
–611d^{ÎÎÎÎ+–}B1^{δδ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ}
–40 dB
–50 dB
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
0.20 fs 0.25 fs 0.30 fs 0.37 fs
Frequency
NOTE: δ = 0.05 dB. fs=74.25 MSPS for 1080I and 720P HDTV formats.
Figure 4–8. P_B and P_R Filter Requirements Based on SMPTE 296M/274M
4–11