XRD64L43 Datasheet, PDF (16/20 Pages) Exar Corporation – Dual 10-Bit 40MSPS CMOS ADC

XRD64L43 Preliminary
0
S in g l e T on e 8 1 9 2 P o in t F F T
-20
S F D R -71 .19
S IN A D - 5 9 . 8 9
-40
-60
-80
-100
-120
-140
-160
DC
2.4
4 .9
7.3
9 .8
12.2
14.6
17.1
1 9 .5
Fr eq u e nc y in M H z
Figure 12. FFT Spectrum @Fclock = 40.0MHz,
Fin = 1.0MHz, DIFFERENTIAL INPUT MODE
0
SingleT one 8192 Point F FT
-20
SFD R -73.18
S IN A D - 5 9 . 7 7
-40
-60
-80
-100
-120
-140
-160
DC
2 .4
4.9
7.3
9.8
12.2
14.6
17.1
1 9 .5
F req uency in M Hz
Figure 13. FFT Spectrum @Fclock = 40.0MHz,
Fin = 4.0MHz, DIFFERENTIAL INPUT MODE
0
S ingleTone 8192 Po int FF T
-20
S F D R - 6 7 .1 2
S IN A D - 5 8 .2 8
-40
-60
-80
-100
-120
-140
-160
DC
2.4
4.9
7 .3
9.8
12.2
F r e quency in M Hz
14.6
1 7 .1
19.5
70.0 0
60.0 0
50.0 0
40.0 0
30.0 0
20.0 0
10.0 0
0 .0 0
SNR vs Inp ut Frequency
D iff e r e n t ia l I n p u t
S in g le-ended
C lockRate: 40M Hz
A V D D , D V D D @ 3 .0 v
fIN (M H z )
Figure 14. FFT Spectrum @Fclock = 40.0MHz,
Fin = 10.0MHz, DIFFERENTIAL INPUT MODE
Figure 15. SNR vs Input Frequency, Differential
and Single Ended Inputs, V_DD=3V
Rev. P1.00
16