ADC32J42 Datasheet, PDF (27/85 Pages) Texas Instruments – Dual-Channel, 14-Bit, 50-MSPS to 160-MSPS, Analog-to-Digital Converters

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ADC32J42, ADC32J43, ADC32J44, ADC32J45
SBAS663A – MAY 2014 – REVISED JUNE 2015
Typical Characteristics: ADC32J44 (continued)
Typical values are at T_A= 25°C, ADC sampling rate = 125 MSPS, 50% clock duty cycle, AVDD = DVDD = 1.8 V, –1-dBFS
differential input, 2-V_PP full-scale, and 32k-point FFT, unless otherwise noted.
74.5
120
10 MHz
230 MHz
10 MHz
230 MHz
70 MHz
270 MHz
70 MHz
270 MHz
72.5
100 MHz
400 MHz
110
100 MHz
400 MHz
170 MHz
170 MHz
70.5
100
68.5
90
66.5
80
64.5
70
62.5
0
1
2
3
4
5
6
Digital Gain (dB)
D319
60
0
1
2
3
4
5
6
Digital Gain (dB)
D320
Figure 52. Signal-to-Noise Ratio vs
Digital Gain and Input Frequency
76
180
SNR (dBFS)
SFDR (dBc)
74.5
SFDR (dBFS) ¹⁵⁰
73
120
71.5
90
70
60
68.5
30
67
0
-70 -60 -50 -40 -30 -20 -10
0
Amplitude (dBFS)
D321
Figure 53. Spurious-Free Dynamic Range vs
Digital Gain and Input Frequency
76
210
SNR (dBFS)
SFDR (dBc)
74.5
SFDR (dBFS) ¹⁸⁰
73
150
71.5
120
70
90
68.5
60
67
30
-70 -60 -50 -40 -30 -20 -10
0
Amplitude (dBFS)
D322
Figure 54. Performance vs Input Amplitude (30 MHz)
73.2
98
SNR
SFDR
73
96
72.8
94
72.6
92
72.4
90
72.2
0.85
0.9
0.95
1
1.05
Input Common - Mode Voltage (V)
88
1.1
D723
Figure 55. Performance vs Input Amplitude (170 MHz)
71.7
86
SNR
SFDR
71.5
84
71.3
82
71.1
80
70.9
78
70.7
76
70.5
0.85
0.9
0.95
1
1.05
Input Common - Mode Voltage (V)
74
1.1
D324
Figure 56. Performance vs Input Common-Mode Voltage
(30 MHz)
Figure 57. Performance vs Input Common-Mode Voltage
(170 MHz)
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