ꢌ ꢒꢊ ꢗꢗ ꢁꢘ
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SBAS308A− MAY 2004 − REVISED MARCH 2005
TYPICAL CHARACTERISTICS
Typical values at TA = +25°C, full temperature range is TMIN = −40°C to TMAX = +85°C, AVDD = DRVDD = 3.3V, sampling rate = 80MSPS,
50% clock duty cycle, 3VPP differential clock, and −1dBFS differential input, unless otherwise noted.
SPECTRAL PERFORMANCE
(FFT for 4MHz Input Signal)
SPECTRAL PERFORMANCE
(FFT for 16MHz Input Signal)
0
20
40
60
80
0
20
40
60
80
SFDR = 92.1dBc
SNR = 74.0dBFS
THD = 88.4dBc
SFDR = 92.0dBc
SNR = 73.6dBFS
THD = 88.2dBc
−
−
−
−
−
−
−
−
SINAD = 73.9dBFS
SINAD = 73.5dBFS
−
−
−
−
100
120
100
120
0
0
0
5
5
5
10
15
20
25
30
35
40
40
40
0
0
0
5
10
15
20
25
30
35
40
40
40
−
−
−
−
f
Frequency MHz
f
Frequency MHz
Figure 5
Figure 6
SPECTRAL PERFORMANCE
(FFT for 55MHz Input Signal)
SPECTRAL PERFORMANCE
(FFT for 70MHz Input Signal)
0
0
SFDR = 87.5dBc
SNR = 73.6dBFS
THD = 83.4dBc
SFDR = 89.3dBc
SNR = 73.4dBFS
THD = 86.8dBc
−
−
−
−
−
−
−
−
20
40
60
80
20
40
60
80
SINAD = 73.2dBFS
SINAD = 73.2dBFS
−
−
−
−
100
120
100
120
10
15
20
25
30
35
5
10
15
20
25
30
35
−
−
f
Frequency MHz
−
−
f
Frequency MHz
Figure 7
Figure 8
SPECTRAL PERFORMANCE
(FFT for 100MHz Input Signal)
SPECTRAL PERFORMANCE
(FFT for 125MHz Input Signal)
0
0
SFDR = 83.9dBc
SNR = 72.7dBFS
THD = 81.5dBc
SFDR = 87.2dBc
SNR = 72.8dBFS
THD = 83.4dBc
−
−
−
−
−
−
−
−
20
40
60
80
20
40
60
80
SINAD = 72.5dBFS
SINAD = 72.2dBFS
−
−
−
−
100
120
100
120
10
15
20
25
30
35
5
10
15
20
25
30
35
−
−
−
−
f
Frequency MHz
f
Frequency MHz
Figure 9
Figure 10
13
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