Datasheet

ADS823, ADS826
SBAS070B
6
www.ti.com
TYPICAL CHARACTERISTICS (Cont.)
At T
A
= full specified temperature range, V
S
= +5V single-ended input range = 1.5V to 3.5V, sampling rate = 60MHz, external reference, unless otherwise noted.
UNDERSAMPLING
(Differential Input, 2Vp-p)
Frequency (MHz)
Magnitude (dB)
0
–20
–40
–60
–80
–100
0 7 14 21 28
f
IN
= 41MHz
f
S
= 56MHz
SNR = 59.8dBFS
SFDR = 78dBFS
2-TONE INTERMODULATION DISTORTION
Frequency (MHz)
0
–20
–40
–60
–80
–100
0 7.50 15 22.50 30
Magnitude (dB)
f
1
= 9.5MHz at –7dBFS
f
2
= 9.9MHz at –7dBFS
IMD(3) = –64.4dBc
DIFFERENTIAL LINEARITY ERROR
Output Code
1.0
0.5
0
–0.5
–1.0
0 256 512 768 1024
DLE (LSB)
f
IN
= 10MHz
DIFFERENTIAL LINEARITY ERROR
Output Code
1.0
0.5
0
–0.5
–1.0
0 256 512 768 1024
DLE (LSB)
f
IN
= 20MHz
INTEGRAL LINEARITY ERROR
Output Code
2.0
1.0
0
–1.0
–2.0
0 256 512 768 1024
ILE (LSB)
f
IN
= 1MHz
SWEPT POWER SFDR
Input Amplitude (dBFS)
100
80
60
40
20
0
–60 –50 –40 –30 –10–20 0
SFDR (dB)
dBc
dBFS
f
IN
= 10MHz