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T − Temperature − °C
82
84
86
88
90
92
−40 −20 0 20 40 60 80
SFDR − dBc
G013
SNR − dBFS
72
73
74
75
76
77
f
IN
= 10.1 MHz
SNR
SFDR
Input Amplitude − dBFS
30
40
50
60
70
80
90
100
110
−60 −50 −40 −30 −20 −10 0
f
IN
= 20.1 MHz
SFDR − dBc, dBFS
G014
SFDR (dBc)
SFDR (dBFS)
SNR (dBFS)
50
55
60
65
70
75
80
85
90
SNR − dBFS
76
78
80
82
84
86
88
90
92
0.5 1.0 1.5 2.0 2.5 3.0
SFDR − dBc
Input Clock Amplitude − V
PP
G015
SNR
SFDR
f
IN
= 20.1 MHz
SNR − dBFS
72
73
74
75
76
77
78
79
80
Input Clock Duty Cycle − %
86
87
88
89
90
91
92
30 35 40 45 50 55 60 65 70
SFDR − dBc
G016
SNR
SFDR
f
IN
= 10.1 MHz
SNR − dBFS
70
71
72
73
74
75
76
V
VCM
− VCM Voltage − V
83
85
87
89
91
93
1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70
f
IN
= 20.1 MHz
External Reference Mode
SFDR − dBc
G018
SNR
SFDR
SNR − dBFS
68
70
72
74
76
78
Output Code
0
5
10
15
20
25
30
35
40
8206 8207 8208 8209 8210 8211 8212 8213 8214 8215
Occurence − %
G017
RMS (LSB) = 1.1
ADS6145, ADS6144
ADS6143, ADS6142
SLWS198B – JULY 2007 – REVISED MARCH 2008
TYPICAL CHARACTERISTICS - ADS6145 (F
S
= 125 MSPS) (continued)
All plots are at 25 ° C, AVDD = DRVDD = 3.3 V, maximum rated sampling frequency, sine wave input clock, 1.5 V
PP
differential
clock amplitude, 50% clock duty cycle, – 1 dBFS differential analog input, internal reference mode, 0 dB gain, CMOS output
interface (unless otherwise noted)
PERFORMANCE vs TEMPERATURE PERFORMANCE vs INPUT AMPLITUDE
Figure 21. Figure 22.
PERFORMANCE vs CLOCK AMPLITUDE PERFORMANCE vs INPUT CLOCK DUTY CYCLE
Figure 23. Figure 24.
OUTPUT NOISE HISTOGRAM
(inputs tied to common-mode) PERFORMANCE IN EXTERNAL REFERENCE MODE
Figure 25. Figure 26.
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Product Folder Link(s): ADS6145, ADS6144 ADS6143, ADS6142