Datasheet

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TYPICAL CHARACTERISTICS - ADS6243 (F
s
= 80 MSPS)
f − Frequency − MHz
−160
−140
−120
−100
−80
−60
−40
−20
0
0 10 20 30 40
Amplitude − dB
G037
SFDR = 91 dBc
SINAD = 74.2 dBFS
SNR = 74.4 dBFS
THD = 88.5 dBc
f − Frequency − MHz
−160
−140
−120
−100
−80
−60
−40
−20
0
0 10 20 30 40
Amplitude − dB
G038
SFDR = 85.7 dBc
SINAD = 73 dBFS
SNR = 73.5 dBFS
THD = 83.9 dBc
f − Frequency − MHz
−160
−140
−120
−100
−80
−60
−40
−20
0
0 10 20 30 40
Amplitude − dB
G039
SFDR = 82 dBc
SINAD = 69.4 dBFS
SNR = 69.7 dBFS
THD = 83.4 dBc
f − Frequency − MHz
−160
−140
−120
−100
−80
−60
−40
−20
0
0 10 20 30 40
Amplitude − dB
G040
f
IN
1 = 185.1 MHz, –7 dBFS
f
IN
2 = 190.1 MHz, –7 dBFS
2-Tone IMD = –93 dBFS
SFDR = –98 dBFS
f
IN
− Input Frequency − MHz
76
78
80
82
84
86
88
90
92
94
96
0 50 100 150 200 250
SFDR − dBc
G041
Gain = 0 dB
Gain = 3.5 dB
f
IN
− Input Frequency − MHz
66
67
68
69
70
71
72
73
74
75
76
0 50 100 150 200 250
SNR − dBFS
G042
Gain = 0 dB
Gain = 3.5 dB
ADS6245 , ADS6244
ADS6243 , ADS6242
SLAS542A – MAY 2007 – REVISED JULY 2007
All plots are at 25 ° C, AVDD = LVDD = 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 (unless
otherwise noted)
FFT for 10 MHz INPUT SIGNAL FFT for 100 MHz INPUT SIGNAL
Figure 42. Figure 43.
FFT for 230 MHz INPUT SIGNAL INTERMODULATION DISTORTION (IMD) vs FREQUENCY
Figure 44. Figure 45.
SFDR vs INPUT FREQUENCY SNR vs INPUT FREQUENCY
Figure 46. Figure 47.
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