ADC32RF44 Datasheet, PDF (17/134 Pages) Texas Instruments – Dual-Channel, 14-Bit, 2.6-GSPS, Analog-to-Digital Converter

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ADC32RF44
SBAS809 – FEBRUARY 2017
Typical Characteristics (continued)
typical values are specified at an ambient temperature of 25°C; minimum and maximum values are specified over an ambient
temperature range of –40°C to +85°C; and ADC sampling rate = 2.6 GHz, 50% clock duty cycle, AVDD19 = 1.9 V, AVDD =
1.15 V, DVDD = 1.15 V, –2-dBFS differential input, and 0-dB digital gain (unless otherwise noted)
20
Temp = -40°C
18
Temp = 25°C
16
Temp = 85°C
14
12
16
Temp = -40°C
14
Temp = 25°C
Temp = 85°C
12
10
10
8
8
6
6
4
4
2
2
0
0
HD2 (dBFS)
D031
f_IN = 1.85 GHz, A_OUT = –2 dBFS, AVDD19 = 1.8 V,
ADC sampling rate = 2.5 GHz
Figure 33. HD2 Histogram at AVDD19 = 1.8 V
21
Temp = -40°C
18
Temp = 25°C
Temp = 85°C
15
12
9
6
3
0
HD2 (dBFS)
D033
f_IN = 1.85 GHz, A_OUT = –2 dBFS, AVDD19 = 2.0 V,
ADC sampling rate = 2.5 GHz
72
70
68
66
64
62
60
58
56
54
52
50
48
-70
Figure 35. HD2 Histogram at AVDD19 = 2.0 V
120
SNR (dBFS) ₁₁₀
SFDR (dBc)
SFDR (dBFS) ¹⁰⁰
90
80
70
60
50
40
30
20
10
0
-60 -50 -40 -30 -20 -10
0
Amplitude (dBFS)
D035
f_IN = 3.5 GHz, 2-dB digital gain
Figure 37. Performance vs Amplitude
HD2 (dBFS)
D032
f_IN = 1.85 GHz, A_OUT = –2 dBFS, AVDD19 = 1.9 V,
ADC sampling rate = 2.5 GHz
Figure 34. HD2 Histogram at AVDD19 = 1.9 V
72
120
70
SNR (dBFS) ₁₁₀
SFDR (dBc)
68
SFDR (dBFS) ¹⁰⁰
66
90
64
80
62
70
60
60
58
50
56
40
54
30
52
20
50
10
48
0
-70 -60 -50 -40 -30 -20 -10
0
Amplitude (dBFS)
D034
f_IN = 1.85 GHz
Figure 36. Performance vs Amplitude
62
71
SNR
SFDR
61
70
60
69
59
68
58
67
57
66
56
0.5
0.9
1.3
1.7
2.1
Differential Clock Amplitude (Vpp)
f_IN = 1.85 GHz, A_IN = –2 dBFS,
ADC sampling rate = 2.5 GHz
65
2.5
D036
Figure 38. Performance vs Clock Amplitude
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