TYPICAL CHARACTERISTICS (Cont.)
TA = 25°C, +VSA = +VSD = +5V, differential input range = 1.5V to 3.5V each input (4Vp-p), sampling rate = 40MSPS, internal reference, and VDRV = 3V, unless otherwise
noted.
DIFFERENTIAL LINEARITY ERROR
FIN = 1MHz
INTEGRAL LINEARITY ERROR
0.5
0.4
4
3
FIN = 1MHz
0.3
2
0.2
1
0.1
0.0
0
–0.1
–0.2
–0.3
–0.4
–0.5
–1
–2
–3
–4
0
1.0
10
2048 4096 6144 8192 10240 12288 14336 16384
Code
0
2048 4096 6144 8192 10240 12288 14336 16384
Code
SFDR AND SNR vs INPUT FREQUENCY
(FCLK = 40MHz)
SFDR AND SNR vs CLOCK FREQUENCY
(FIN = 15MHz)
100
90
80
70
60
50
40
90
85
80
75
70
65
60
SFDR
SFDR
SNR
SNR
10
100
10
15
20
25
30
35
40
FIN (MHz)
FCLK (MHz)
SWEPT POWER (SFDR)
(FIN = 10MHz)
SFDR AND SNR vs CLOCK FREQUENCY
(FIN = 10MHz)
90
85
80
75
70
65
60
120
110
100
90
80
70
60
50
40
30
20
10
0
SFDR
dBFS
SNR
dBc
15
20
25
30
35
40
–60
–50
–40
–30
–20
–10
0
FCLK (MHz)
Input Amplitude (dBFS)
ADS5421
SBAS237D
7
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