THS8134_14 Datasheet, PDF (15/26 Pages) Texas Instruments – TRIPLE 8-BIT, 80 MSPS VIDEO D/A CONVERTER

THS8134, THS8134A, THS8134B
TRIPLE 8ĆBIT, 80 MSPS VIDEO D/A CONVERTER
WITH TRIĆLEVEL SYNC GENERATION
SLVS205D − MAY 1999 − REVISED MARCH 2000
performance plots of AGY output channel at 80 MSPS and use of internal reference (continued)
SPECTRUM OF DAC OUTPUTS
AMPLITUDE (dBFS)
vs
FREQUENCY (MHz)
0
−20
−40
−60
−80
−100
−120
−140
−160
0.00 0.81 1.62 2.43 3.24 4.05 4.86 5.67 6.48 7.29 8.10 8.91
Frequency (MHz)
Figure 9. Spectral Plot for 1.02 MHz Digital Sine Input at 80 MSPS
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
−25.0
DAC OUTPUT WAVEFORM
BLANK TO FULL-SCALE VIDEO OUTPUT (mV)
vs
TIME (ns)
−19.4 −13.8
−8.2
−2.6
3.0
8.6
14.2
19.8
Time (ns)
Figure 10. DAC Output Waveform (rise/fall and settling times)
Table 5. DAC Output Amplitude Variation Over Varying F_in at F_clk = 80 MSPS
Fin (kHz)
500
5000
10000
20000
30000
40000
Fclk (MSPS)
80
80
80
80
80
80
SYNC DROOP (dB)
0
−0.056
−0.22
−0.91
−2.11
−3.92
EXCESS DROOP (dB)
0
−0.02
−0.08
−0.29
−0.39
−0.40
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