ꢌꢒ ꢊꢗ ꢗ ꢁ ꢘ
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SBAS308A− MAY 2004 − REVISED MARCH 2005
TYPICAL CHARACTERISTICS (continued)
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 150MHz Input Signal)
SPECTRAL PERFORMANCE
(FFT for 220MHz Input Signal)
0
20
40
60
80
0
20
40
60
80
SFDR = 88.6dBc
SNR = 71.9dBFS
THD = 81.2dBc
SFDR = 78.4dBc
SNR = 70.7dBFS
THD = 75.8dBc
−
−
−
−
−
−
−
−
SINAD = 71.8dBFS
SINAD = 69.8dBFS
−
−
−
−
100
120
100
120
0
0
0
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 11
Figure 12
SPECTRAL PERFORMANCE
(FFT for 300MHz Input Signal)
TWO−TONE
INTERMODULATION
0
0
SFDR = 68.4dBc
SNR = 68.5dBFS
THD = 68.2dBc
−
−
f1 = 10.1MHz ( 7dBFS)
f2 = 15.1MHz ( 7dBFS)
2−Tone SFDR = 92.8dBc
−
−
−
−
−
−
−
−
20
40
60
80
20
40
60
80
SINAD = 65.8dBFS
−
−
−
−
100
120
100
120
5
10
15
20
25
30
35
5
10
15
20
25
30
35
−
−
−
−
f
Frequency MHz
f
Frequency MHz
Figure 13
Figure 14
TWO−TONE
INTERMODULATION
TWO−TONE
INTERMODULATION
0
0
−
−
−
f1 = 50.1MHz ( 7dBFS)
f2 = 55.1MHz ( 7dBFS)
2−Tone SFDR = 91.4dBc
f1 = 45.1MHz ( 7dBFS)
f2 = 50.1MHz ( 7dBFS)
2−Tone SFDR = 91.6dBc
−
−
−
−
−
−
−
−
−
20
40
60
80
20
40
60
80
−
−
−
−
100
120
100
120
5
10
15
20
25
30
35
5
10
15
20
25
30
35
−
−
f
Frequency MHz
−
−
f
Frequency MHz
Figure 15
Figure 16
14
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