TYPICAL PERFORMANCE CURVES
(Cont.)
At T
A
= full specified temperature range, V
S
= +5V, single-ended input range = 1.5V to 3.5V, and sampling rate = 40MHz, external reference, unless otherwise noted.
UNDERSAMPLING
(Differential Input, 2Vp-p)
0
f
S
= 40MHz
f
IN
= 75MHz
SNR = 59dBFS
SFDR = 66dBFS
TWO-TONE INTERMODULATION DISTORTION
0
f
1
= 9.5MHz at –7dBFS
f
2
= 9.9MHz at –7dBFS
IMD (3) = –67dB
–20
Magnitude (dB)
–20
Magnitude (dB)
–40
–40
–60
–60
–80
–80
–100
0
5
10
Frequency (MHz)
15
20
–100
0
5
10
Frequency (MHz)
15
20
DIFFERENTIAL LINEARITY ERROR
1.0
f
IN
= 1MHz
1.0
DIFFERENTIAL LINEARITY ERROR
f
IN
= 10MHz
0.5
0.5
DLE (LSB)
0
DLE (LSB)
0
20
40
60
80
1024
0
–0.5
–0.5
–1.0
Output Code
–1.0
0
20
40
60
80
1024
Output Code
INTEGRAL LINEARITY ERROR
2.0
100
SWEPT POWER SFDR
SFDR (dBFS, dBc)
1.0
ILE (LSB)
80
dBFS
60
0
40
dBc
20
–1.0
–2.0
0
256
512
Output Code
768
1024
0
–60
–50
–40
–30
–20
–10
0
Input Amplitude (dBFS)
®
ADS822, ADS825
6
BURR-BROWN [ BURR-BROWN CORPORATION ]
