Datasheet

68
68.5
69
69.5
70
70.5
71
71.5
72
2.5 5 7.5 10 12.5 15
HVDD, Positive High-Voltage Supply (V)
Signal-to-Noise and Distortion (dB)
G049
68
68.5
69
69.5
70
70.5
71
71.5
72
0 15 30 45 60 75 90 105
f
IN
, Input Frequency (kHz)
Signal-to-Noise and Distortion (dB)
G050
−87
−86.5
−86
−85.5
−85
−84.5
−84
−83.5
−83
−82.5
−82
2.7 3.2 3.7 4.2 4.7 5.2 5.7
AVDD (V)
Total Harmonic Distortion (dB)
G051
−87
−86
−85
−84
−83
−82
−81
−80
−79
−78
−77
−76
−75
±2.5V ±5V ±10V 0−5V 0−10V
Signal Range
Total Harmonic Distortion (dB)
G052
−87
−86
−85
−84
−83
−82
−81
−80
−79
−78
−77
−76
−75
2 2.2 2.4 2.6 2.8 3
Reference Voltage (V)
Total Harmonic Distortion (dB)
G053
−87
−86
−85
−84
−83
−82
−81
−80
−79
−78
−77
−76
−75
0 1 2 3 4 5 6 7
Channel Number
Total Harmonic Distortion (dB)
G054
ADS8634
ADS8638
SBAS541A –MAY 2011– REVISED AUGUST 2011 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, internal reference = 2.5V, channel 0, range = ±2.5V, AVDD = 2.7V, DVDD = 1.8V, HVDD = 10V, HVSS
= –10V, and f
SAMPLE
= 1MSPS, unless otherwise noted.
SINAD vs POSITIVE HIGH-VOLTAGE SUPPLY SINAD vs INPUT FREQUENCY
Figure 39. Figure 40.
THD vs ANALOG SUPPLY VOLTAGE THD vs SIGNAL RANGE
Figure 41. Figure 42.
THD vs REFERENCE VOLTAGE THD vs CHANNEL NUMBER
Figure 43. Figure 44.
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