Datasheet

70
70.2
70.4
70.6
70.8
71
71.2
71.4
71.6
71.8
72
0 15 30 45 60 75 90 105
f
IN
, Input Frequency (kHz)
Signal-to-Noise Ratio (dB)
G043
70
70.2
70.4
70.6
70.8
71
71.2
71.4
71.6
71.8
72
2.7 3.2 3.7 4.2 4.7 5.2 5.7
AVDD (V)
Signal-to-Noise and Distortion (dB)
G044
70
70.2
70.4
70.6
70.8
71
71.2
71.4
71.6
71.8
72
±2.5V ±5V ±10V 0−5V 0−10V
Signal Range
Signal-to-Noise and Distortion (dB)
G045
68
68.5
69
69.5
70
70.5
71
71.5
72
2 2.2 2.4 2.6 2.8 3
Reference Voltage (V)
Signal-to-Noise and Distortion (dB)
G046
68
68.5
69
69.5
70
70.5
71
71.5
72
0 1 2 3 4 5 6 7
Channel Number
Signal-to-Noise and Distortion (dB)
G047
68
68.5
69
69.5
70
70.5
71
71.5
72
−40 −25 −10 5 20 35 50 65 80 95 110 125
Free-Air Temperature (dB)
Signal-to-Noise and Distortion (dB)
G048
ADS8634
ADS8638
www.ti.com SBAS541A –MAY 2011– REVISED AUGUST 2011
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.
SNR vs INPUT FREQUENCY SINAD vs ANALOG SUPPLY VOLTAGE
Figure 33. Figure 34.
SINAD vs SIGNAL RANGE SINAD vs REFERENCE VOLTAGE
Figure 35. Figure 36.
SINAD vs CHANNEL NUMBER SINAD vs FREE-AIR TEMPERATURE
Figure 37. Figure 38.
Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback 15
Product Folder Link(s): ADS8634 ADS8638