Datasheet
88
90
92
94
96
98
100
−40 −25 −10 5 20 35 50 65 80 95 110 125
Temperature (°C)
Spurious−Free Dynamic Range (dB)
ADS8568
ADS8548
ADS8528
G019
−180
−160
−140
−120
−100
−80
−60
−40
−20
0
0 25 50 75 100 125 150 175 200 225 250
Frequency (kHz)
Amplitude (dB)
G020
−180
−160
−140
−120
−100
−80
−60
−40
−20
0
0 25 50 75 100 125 150 175 200 225 250
Frequency (kHz)
Amplitude (dB)
G021
100
105
110
115
120
125
130
135
140
0 25 50 75 100 125 150 175 200 225 250
Noise Frequency (kHz)
Isolation (dB)
G022
2.496
2.497
2.498
2.499
2.5
2.501
2.502
2.503
2.504
4.5 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 5.5
AVDD (V)
VREF (V)
G023
2.485
2.49
2.495
2.5
2.505
2.51
2.515
−40 −25 −10 5 20 35 50 65 80 95 110 125
Temperature (°C)
VREF (V)
G024
ADS8528
ADS8548
ADS8568
SBAS543A –AUGUST 2011– REVISED OCTOBER 2011
www.ti.com
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.
FREQUENCY SPECTRUM
SFDR vs TEMPERATURE (ADS8568, 2048-Point FFT, f
IN
= 10kHz, ±10V
IN
Range)
Figure 23. Figure 24.
FREQUENCY SPECTRUM CHANNEL-TO-CHANNEL ISOLATION vs
(ADS8568, 2048-Point FFT, f
IN
= 10kHz, ±5V
IN
Range) INPUT NOISE FREQUENCY
Figure 25. Figure 26.
INTERNAL REFERENCE VOLTAGE vs INTERNAL REFERENCE VOLTAGE vs TEMPERATURE
ANALOG SUPPLY VOLTAGE (2.5V Mode) (2.5V Mode)
Figure 27. Figure 28.
22 Copyright © 2011, Texas Instruments Incorporated
Product Folder Link(s): ADS8528 ADS8548 ADS8568