TYPICAL PERFORMANCE CURVES
At TA = +25°C, fS = 40kHz, VS1 = VS2 = +5V, using internal reference, unless otherwise noted.
FREQUENCY SPECTRUM
(8192 Point FFT; fIN = 1.02kHz, –0.5dB)
CROSSTALK vs INPUT FREQUENCY
(Active Channel Amplitude = –0.1dB)
0
–10
–60.0
–70.0
–20
Adjacent Channels, Worst Pair
–30
–80.0
–40
–50
–90.0
Adjacent Channels
–60
–100.0
–110.0
–120.0
–130.0
–140.0
–70
Non-Adjacent Channels
–80
–90
–100
–110
–120
–130
Measurement Limit
0
5
10
15
20
100
1k
10k
100k
Frequency (kHz)
Active Channel Input Frequency (Hz)
ADJACENT CHANNEL CROSSTALK, WORST PAIR
(8192 Point FFT; AIN3 = 1.02kHz, –0.1dB; AIN2 = AGND)
ADJACENT CHANNEL CROSSTALK, WORST PAIR
(8192 Point FFT; AIN3 = 10.1kHz, –0.1dB; AIN2 = AGND )
0
–10
0
–10
–20
–20
–30
–30
–40
–40
–50
–50
–60
–60
–70
–70
–80
–80
–90
–90
–100
–110
–120
–130
–100
–110
–120
–130
0
5
10
15
20
0
5
10
15
20
Frequency (kHz)
Frequency (kHz)
SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY AND INPUT AMPLITUDE
SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY (fIN = –0.1dB)
100
90
80
70
60
50
40
30
20
10
100
90
80
70
60
50
40
30
0dB
–20dB
–60dB
0
2
4
6
8
10 12 14
16
18 20
100
1k
10k
100k
Input Signal Frequency (kHz)
Input Signal Frequency (Hz)
®
ADS7825
5
BB [ BURR-BROWN CORPORATION ]
