DAC38RF80 Datasheet, PDF (26/152 Pages) Texas Instruments – Dual- or Single-Channel, Single-Ended or Differential-Output, 14-bit, 9-GSPS, RF-Sampling DAC with JESD204B Interface and On-Chip PLL

DAC38RF80, DAC38RF83, DAC38RF84
DAC38RF85, DAC38RF90, DAC38RF93
SLASEA3 – DECEMBER 2016
www.ti.com
Typical Characteristics (continued)
Unless otherwise noted, all plots are at T_A = 25°C, nominal supply voltages, f_DAC = 8847.36MSPS, 12x interpolation, 0dBFS
digital input, 40mA full scale output current (with 2:1 transformer in DAC38RF83/93/85 only), LMF = 841 and PLL is disabled.
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
0
500 1000 1500 2000 2500 3000 3500 4000 4500
Output Frequency (MHz)
D000
DAC38RF83/93/85
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
0
500 1000 1500 2000 2500 3000 3500 4000 4500
Output Frequency (MHz)
D017
DAC38RF80/90/84
Figure 31. Power vs Output Frequency
Figure 32. Power vs Output Frequency
-60
-80
-100
-120
CP=2
CP=3
CP=4
CP=5
CP=6
CP=7
CP=8
CP=9
CP=10
CP=11
CP=12
CP=13
CP=14
CP=15
-140
-160
1000
10000
100000 1000000
Freq offset (Hz)
Phase Noise
measured at 1GHz
1E+7
5E+7
D027
Figure 33. VCO1 Phase Noise vs Offset Frequency Over
Charge pump current
-90
div4
div3
-100
div2
-110
-120
-130
-140
-150
-160
1000
10000
100000 1000000
Freq offset (Hz)
div4 = 2211.84
MHz, div3=2949.12
MHz
1E+7
5E+7
D028
Figure 34. VCO1 Output Clock Phase Noise vs Offset
frequency Over Divider Ratio
26
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