®
®
ADS-945
+0.39
DNL (LSB's)
0
Number of Occurences
0.29
0
Digital Output Code
16,384
0
Digital Output Code
16,384
Figure 7. ADS-945 Histogram and Differential Nonlinearity
PH vs. Input Frequency
90
80
70
90
80
70
60
THD vs. Input Frequency
Peak Harmonic (–dB)
60
50
40
30
20
10
0
1
10
100
1000
10000
100000
THD (–dB)
50
40
30
20
10
0
1
10
100
1000
10000
100000
Frequency (kHz)
Frequency (kHz)
SNR vs. Input Frequency
90
80
70
90
80
70
SNR+D vs. Input Frequency
Peak Harmonic (–dB)
SNR+D (dB)
60
50
40
30
20
10
0
60
THD (–dB)
SNR (dB)
50
40
30
20
10
0
1
10
100
1000
10000
100000
1
10
100
1000
10000
100000
Frequency (kHz)
Frequency (kHz)
Figure 8. ADS-945 Dynamic Performance vs. Input Frequency at +25°C
7