TYPICAL PERFORMANCE CURVES
At VA = VD = VREF+ = 5V, VREF– = AGND = 0V, TA = +25°C, dynamic performance based on 2048 point FFTs, unless otherwise noted.
FREQUENCY SPECTRUM (1kHz fIN
)
FREQUENCY SPECTRUM (48kHz fIN)
0
–20
–40
–60
–80
0
–20
–40
–60
–80
S/(N + D) = 71.4dB
fSAMPLING = 100kHz
S/(N + D) = 69.2dB
fSAMPLING = 100kHz
–100
–120
–100
–120
0
10
20
30
40
50
0
10
20
30
40
50
Frequency (kHz)
Frequency (kHz)
CHANNEL SEPARATION vs FREQUENCY
CODE TRANSITION NOISE
100
75
100
80
Channel AIN3
Channel AIN1
Channel AIN0
60
50
40
25
0
20
0
0
0.25
0.5
0.75
1
1
10
100
1k
Frequency of 5Vp-p Signal on Channel AIN2 (kHz)
Analog Input Voltage – Expected Code Center (LSBs)
SIGNAL/(NOISE + DISTORTION)
vs INPUT FREQUENCY
POWER SUPPLY REJECTION vs FREQUENCY
72
70
10
VA
1
VD
68
66
0.1
0.5
1
2
3
5
10
20
3
50
0.1
1
10
100
1000
Input Frequency (kHz)
Frequency (kHz)
®
4
ADS7803
BB [ BURR-BROWN CORPORATION ]
