PERFORMANCE CHARACTERISTICS
SNR vs Input Frequency
80
THD vs Input Frequency
80
70
70
fs = 20 MSPS
Total Harmonic Distortion (dB)
101
Signal-to-Noise Ratio (dB)
60
60
50
fs = 20 MSPS
50
40
40
30
30
20
10 -1
100
20
10-1
100
101
Input Frequency (MHz)
Input Frequency (MHz)
SNR, THD, SINAD vs Sample Rate
80
80
SINAD vs Input Frequency
SNR, THD
Signal-to-Noise and Distortion (dB)
70
70
fs =20 MSPS
SNR, THD, SINAD (dB)
60
60
SINAD
50
50
f
IN = 1 MHz
40
40
30
30
20
100
101
102
20
10 -1
100
101
Sample Rate (MSPS)
Input Frequency (MHz)
SPT7921
Spectral Response
0
SNR, THD, SINAD vs Temperature
75
f
S
= 20 MSPS
f
IN
= 1 MHz
SNR, THD, SINAD (dB)
-30
70
SNR
Amplitude (dB)
65
-60
THD
60
-90
f
s = 20 MSPS
f
IN = 1 MHz
55
SINAD
-120
0
1
2
3
4
5
50
-25
0
+25
+50
+75
Frequency (MHz)
Temperature (°C)
SPT7921
6
3/10/97
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
