Datasheet

ADS901
6
SBAS054A
UNDERSAMPLING
Frequency (MHz)
0
–20
–40
–60
–80
–100
–120
0 16.2 32.4 48.6 64.8 81.0
Amplitude (dB)
f
IN
= 20MHz
f
S
= 16MHz
TYPICAL CHARACTERISTICS (Cont.)
At T
A
= +25°C, V
S
= Logic V
DD
= +3V, REFB = 1V, REFT = 2V, Specified Input Range = 1V to 2V, Sampling Rate = 20MHz, unless otherwise specified.
INTEGRAL LINEARITY ERROR
Output Code
10
5
0
–5
–10
ILE (LSB)
f
IN
= 500kHz
0 256 512 768 1024
DIFFERENTIAL LINEARITY ERROR
vs TEMPERATURE
Temperature (°C)
0.9
0.8
0.7
0.6
–50 0 25–25 50 75 100
DLE (LSB)
f
IN
= 9MHz
f
IN
= 500kHz
SWEPT POWER SFDR
Input Amplitude (dBFS)
100
80
60
40
20
0
–60 –40–50 –30 –20 –10 0
SFDR (dBc, dBFS)
dBFS
dBc
SPURIOUS FREE DYNAMIC RANGE (SFDR)
vs TEMPERATURE
Temperature (°C)
56
54
52
50
48
–50 0 25–25 50 75 100
SFDR (dBFS)
f
IN
= 500kHz
f
IN
= 9MHz
DYNAMIC PERFORMANCE vs INPUT FREQUENCY
Frequency (MHz)
54
53
52
51
50
0.1 1 10
SFDR (dBFS), SNR (dB)
SNR
SFDR