Datasheet

−45 −40 −35 −30 −25 −20 −15 −10 −5 0
20
30
40
50
60
70
80
90
100
110
120
69
69.5
70
70.5
71
71.5
72
72.5
73
73.5
74
Amplitude (dBFS)
SFDR (dBc, dBFS)
SNR (dBFS)
SFDR (dBFS)
SFDR (dBc)
SNR
Input Frequency = 40MHz
59
60
61
62
63
64
65
66
67
68
69
70
71
72
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
Gain (dB)
SINAD (dBFS)
170MHz
220MHz
300MHz
400MHz
−45 −40 −35 −30 −25 −20 −15 −10 −5 0
20
30
40
50
60
70
80
90
100
110
120
69
69.5
70
70.5
71
71.5
72
72.5
73
73.5
74
Amplitude (dBFS)
SFDR (dBc, dBFS)
SNR (dBFS)
SFDR (dBFS)
SFDR (dBc)
SNR
Input Frequency = 150MHz
0.8 0.85 0.9 0.95 1 1.05 1.1
74
78
82
86
90
94
69
69.5
70
70.5
71
71.5
Input Common−Mode Voltage (V)
SFDR (dBc)
SNR (dBFS)
SFDR
SNR
Input Frequency = 150MHz
ADS4122, ADS4125
ADS4142, ADS4145
SBAS520A –FEBRUARY 2011– REVISED MARCH 2011 www.ti.com
TYPICAL CHARACTERISTICS: ADS4122 (continued)
At +25°C, AVDD = 1.8V, DRVDD = 1.8V, maximum rated sampling frequency, sine wave input clock, 1.5V
PP
differential clock
amplitude, 50% clock duty cycle, –1dBFS differential analog input, 0dB gain, low-latency mode, DDR LVDS output interface,
and 32k-point FFT, unless otherwise noted.
PERFORMANCE ACROSS INPUT AMPLITUDE
SINAD ACROSS GAIN AND INPUT FREQUENCY (Single Tone)
Figure 23. Figure 24.
PERFORMANCE ACROSS INPUT AMPLITUDE
(Single Tone) PERFORMANCE vs INPUT COMMON-MODE VOLTAGE
Figure 25. Figure 26.
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Product Folder Link(s): ADS4122 ADS4125 ADS4142 ADS4145