ADS6444IRGCT View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ADS6444IRGCT Datasheet PDF : 75 Pages
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www.ti.com
ADS6444 (Fsrated = 105 MSPS) (continued)
ADS6445, ADS6444
ADS6443, ADS6442
SLAS531 – MAY 2007
PERFORMANCE vs CLOCK AMPLITUDE (differential)
92
76
90 fIN = 70.1 MHz
75
88
74
SNR
86
73
84
72
82
71
80
SFDR
70
78
69
76
0.5
1.0
1.5
2.0
2.5
Input Clock Amplitude − VPP
Figure 36.
68
3.0
G031
PERFORMANCE vs CLOCK DUTY CYCLE
93
76
fIN = 20.1 MHz
91
SFDR
75
89
74
87
SNR
73
85
72
83
35
40
45
50
55
60
Input Clock Duty Cycle − %
Figure 37.
71
65
G032
POWER DISSIPATION vs SAMPLING FREQUENCY
2.0
1.8
1.6
1.4
1.2
1.0
AVDD
0.8
0.6
0.4
LVDD
0.2
0.0
0
20
40
60
80
100
fS − Sampling Frequency − MSPS
G033
Figure 38.
OUTPUT NOISE HISTOGRAM WITH
INPUTS TIED TO COMMON-MODE
40
RMS LSB = 1.054
35
30
25
20
15
10
5
0
8179 8180 8181 8182 8183 8184 8185 8186 8187 8188
Output Code
G034
Figure 39.
PERFORMANCE IN EXTERNAL REFERENCE MODE
85
76
fIN = 70.1 MHz
External Reference Mode
84
74
SNR
83
72
82
SFDR
70
81
68
80
66
1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70
VVCM − VCM Voltage − V
G035
Figure 40.
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
0
CMRR vs FREQUENCY
50
100
150
200
250
300
f − Frequency − MHz
G018
Figure 41.
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37
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