XRD98L61 Datasheet, PDF (35/37 Pages) Exar Corporation – CCD Image Digitizers with CDS, PGA and 12-Bit A/D

Preliminary
XRD98L61
AVDD = DVDD = 2.7V
75 _FS _{= 20 MHz}
TA = 25 C
SNR = SIGNAL peak-peak / RMS noise (shorted input)
70
65
REXT = 12.5K
REXT = 18.2K
REXT = 25K
REXT = 30K
REXT = 36K
REXT = 45K
60
55
50
45
40
0
6
12
18
24
30
36
PGA GAIN, dB
Figure 26. XRD98L61 SNR vs PGA Gain @ 20MHz with Different R_EXT
1.5
AVDD = DVDD = 2.7V
FS = 20 MHz
1.0
0.5
0.0
-0.5
-1.0
-1.5
10
15
20
25
30
35
40
REXT, KOhms
Figure 25. XRD98L61 System DNL vs R @ 20MHz
EXT
Rev. P4.00
35
+DNL @ -20 DEG C
+DNL @ 25 DEG C
+DNL @ 75 DEG C
-DNL @ -20 DEG C
-DNL @ 25 DEG C
-DNL @ 75 DEG C
45
50