Datasheet

−120
−100
−80
−60
−40
−20
0
0 5 10 15 20 25 30 32.5
Frequency (MHz)
Amplitude (dB)
SFDR = 85.1dBc
SNR = 71.3dBFS
SINAD = 71.1dBFS
THD = 83dBc
−120
−100
−80
−60
−40
−20
0
0 5 10 15 20 25 30 32.5
Frequency (MHz)
Amplitude (dB)
SFDR = 84.3dBc
SNR = 70.5dBFS
SINAD = 70.3dBFS
THD = 82.7dBc
−120
−100
−80
−60
−40
−20
0
0 5 10 15 20 25 30 32.5
Frequency (MHz)
Amplitude (dB)
SFDR = 71.9dBc
SNR = 69.3dBFS
SINAD = 67.7dBFS
THD = 71.7dBc
−120
−100
−80
−60
−40
−20
0
0 5 10 15 20 25 30 32.5
Frequency (MHz)
Amplitude (dB)
Each Tone at
−7dBFS Amplitude
f
IN1
= 100MHz
f
IN2
= 105MHz
Two−Tone IMD = 90.1dBFS
SFDR = 97.3dBFS
ADS4122, ADS4125
ADS4142, ADS4145
SBAS520A –FEBRUARY 2011– REVISED MARCH 2011 www.ti.com
TYPICAL CHARACTERISTICS: ADS4122
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.
FFT FOR 20MHz INPUT SIGNAL FFT FOR 170MHz INPUT SIGNAL
Figure 15. Figure 16.
FFT FOR 300MHz INPUT SIGNAL FFT FOR TWO-TONE INPUT SIGNAL
Figure 17. Figure 18.
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Product Folder Link(s): ADS4122 ADS4125 ADS4142 ADS4145