ADC324X Datasheet, PDF (44/81 Pages) Texas Instruments – The ADC324x are a high-linearity

ADC3241, ADC3242, ADC3243, ADC3244
SBAS671B – JULY 2014 – REVISED MARCH 2015
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7.21 Typical Characteristics: Contour
Typical values are at T_A= 25°C, ADC sampling rate = 125 MSPS, 50% clock duty cycle, AVDD = 1.8 V, DVDD = 1.8 V, –1-
dBFS differential input, 2-V_PP full-scale, 32k-point FFT, chopper disabled, and SNR reported with a 1-MHz offset from dc
when chopper is disabled and from f_S / 2 when is chopper enabled, unless otherwise noted.
120
85
80
110
90
80
100
90
75
90
90
80
85
70
60
90
80
75
70
50
85
40
30 90
75
70
80
50 100 150 200 250 300 350 400 450
Input Frequency, MHz
70
75
80
85
90
Figure 130. Spurious-Free Dynamic Range (SFDR)
120
110
73
100
72.5
72
71.5
71
70.5
69.5
70
69
90
80
70
73
72.5
72
71.5
71
70.5
69.5 69
60
70
50
40
30
73
72.5 ₇₂ 71.5 ₇₁ 70.5 ₇₀
69.5 69
68.5
68 _67.5
50
100
150
200
250
300
350
400
450
Input Frequency, MHz
67
68
69
70
71
72
73
Figure 131. Signal-to-Noise Ratio (SNR)
44
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