ADS5296A Datasheet, PDF (30/107 Pages) Texas Instruments – 10-Bit, 200-MSPS, 4-Channel and 12-Bit, 80-MSPS, 8-Channel Analog-to-Digital Converter

ADS5296A
SBAS631 – OCTOBER 2013
www.ti.com
TYPICAL CHARACTERISTICS: General (4-Channel, 10-Bit, Interleaving Mode) (continued)
Typical values are at T_A = +25°C, AVDD = 1.8 V, LVDD = 1.8 V, input clock frequency = 200 MSPS, 50% clock duty cycle,
and –1-dBFS differential analog input, unless otherwise noted.
85
82.5
80
Normal Mode − Input Frequency = 10 MHz
Normal mode − Input Frequency = 70 MHz
Mux mode − Input Frequency = 10 MHz
Mux mode − Input Frequency = 70 MHz
100
SNR
SFDR (dBc)
90
SFDR (dBFS)
80
68
Input Frequency = 5 MHz
66
64
77.5
75
72.5
70
67.5
65
0 1 2 3 4 5 6 7 8 9 10 11 12
Digital Gain (dB)
G045
Figure 49. INTERLEAVING SPUR (f_S / 2 – f_IN)
vs DIGITAL GAIN
70
62
60
60
50
58
40
56
30
54
20
52
−50 −45 −40 −35 −30 −25 −20 −15 −10 −5 0
Input amplitude (dBFS)
G046
Figure 50. PERFORMANCE vs INPUT AMPLITUDE
62
Input Frequency = 5 MHz
61.9
61.8
AVDD = 1.7 V
AVDD = 1.8 V
AVDD = 1.9 V
61.7
61.6
61.5
61.4
61.3
61.2
61.1
61
−40 −27.5 −15 −2.5 10 22.5 35 47.5 60 72.5 85
Temperature (°C)
G047
Figure 51. SIGNAL-TO-NOISE RATIO vs
AVDD AND TEMPERATURE
84
Input Frequency = 5 MHz
83
82
AVDD = 1.7 V
AVDD = 1.8 V
AVDD = 1.9 V
81
80
79
78
77
76
75
−40 −27.5 −15 −2.5 10 22.5 35 47.5 60 72.5 85
Temperature (°C)
G048
Figure 52. SPURIOUS-FREE DYNAMIC RANGE vs
AVDD AND TEMPERATURE
30
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