Datasheet
−100
−90
−80
−70
−60
−50
−40
0 20 40 60 80 100 120 140 160 180 200
Supply Noise Frequency (kHz)
Power-Supply Rejection Ratio (dB)
AVDD
HVDD
HVSS
C
SUPPLY
= 100nF on AVDD
C
SUPPLY
= 1µF on HVDD
C
SUPPLY
= 1µF on HVSS
G013
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
−40 −25 −10 5 20 35 50 65 80 95 110 125
Temperature (°C)
Conversion Time (µs)
ADS8568
ADS8548
ADS8528
G014
70
72
74
76
78
80
82
84
86
88
90
92
94
−40 −25 −10 5 20 35 50 65 80 95 110 125
Temperature (°C)
Signal-to-Noise Ratio (dB)
ADS8568
ADS8548
ADS8528
G016
0 8
46
0 0
7389
8947
70
72
74
76
78
80
82
84
86
88
90
92
94
−40 −25 −10 5 20 35 50 65 80 95 110 125
Temperature (°C)
Signal-to-Noise Ratio and Distortion (dB)
ADS8568
ADS8548
ADS8528
G017
−96
−94
−92
−90
−88
−86
−84
−82
−40 −25 −10 5 20 35 50 65 80 95 110 125
Temperature (°C)
Total Harmonic Distortion (dB)
ADS8568
ADS8548
ADS8528
G018
ADS8528
ADS8548
ADS8568
www.ti.com
SBAS543A –AUGUST 2011– REVISED OCTOBER 2011
TYPICAL CHARACTERISTICS (continued)
Graphs are valid for all devices of the family, at T
A
= +25°C, HVDD = 15V, HVSS = –15V, AVDD = 5V, and DVDD = 3.3V,
VREF = 2.5V (internal), V
IN
= ±10V, and f
DATA
= maximum, unless otherwise noted.
PSRR vs SUPPLY NOISE FREQUENCY CONVERSION TIME vs TEMPERATURE
Figure 17. Figure 18.
CODE HISTOGRAM
(ADS8568, 16390 Hits) SNR vs TEMPERATURE
Figure 19. Figure 20.
SINAD vs TEMPERATURE THD vs TEMPERATURE
Figure 21. Figure 22.
Copyright © 2011, Texas Instruments Incorporated 21
Product Folder Link(s): ADS8528 ADS8548 ADS8568