THS8134 Datasheet, PDF (15/24 Pages) Texas Instruments – TRIPLE 8-BIT, 80 MSPS VIDEO D/A CONVERTER WITH TRI-LEVEL SYNC GENERATION

THS8134, THS8134A, THS8134B
TRIPLE 8-BIT, 80 MSPS VIDEO D/A CONVERTER
WITH TRI-LEVEL SYNC GENERATION
SLVS205D – MAY 1999 – REVISED MARCH 2000
performance plots of AGY output channel at 80 MSPS and use of internal reference (continued)
0
–20
–40
–60
–80
–100
–120
–140
–160
0
SPECTRUM OF DAC OUTPUTS
AMPLITUDE (dBFS)
vs
FREQUENCY (MHz)
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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