Datasheet

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SBAS306F − NOVEMBER 2004 − REVISED OCTOBER 2007
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8
TYPICAL CHARACTERISTICS
T
A
= 25°C, AVDD = 5V, DVDD = 1.8V, f
CLK
= 27MHz, VREFP = 2.5V, VREFN = 0V, unless otherwise noted.
Figure 1
OUTPUT SPECTRUM
10 100 1k
Frequency (Hz)
0
−
20
−
40
−
60
−
80
−
100
−
120
−
140
−
160
Amplitude (dB)
10k 100k
High−Speed Mode
f
IN
= 1kHz,
−
0.5dBFS
32,768 Points
Figure 2
OUTPUT SPECTRUM
10 100 1k
Frequency (Hz)
0
−
20
−
40
−
60
−
80
−
100
−
120
−
140
−
160
Amplitude (dB)
10k 100k
High−Speed Mode
f
IN
=1kHz,
−
20dBFS
32,768 Points
Figure 3
OUTPUT SPECTRUM
0.1 1 10 100 1k
Frequency (Hz)
0
−
20
−
40
−
60
−
80
−
100
−
120
−
140
−
160
−
180
Amplitude (dB)
10k 100k
High−Speed Mode
Shorted Input
2,097,152 Points
Figure 4
NOISE HISTOGRAM
−
50
−
45
−
40
−
35
−
30
−
25
−
20
−
15
−
10
−
5
0 5
10 15 20 25 30 35 40 45 50
Output (
µ
V)
420k
360k
300k
240k
180k
120k
60k
0
Number of Occurrences
High−Speed Mode
Shorted Input
2,097,152 Points
Figure 5
OUTPUT SPECTRUM
10 100 1k
Frequency (Hz)
0
−
20
−
40
−
60
−
80
−
100
−
120
−
140
−
160
Amplitude (dB)
10k 100k
High−Resolution Mode
f
IN
=1kHz,
−
0.5dBFS
32,768 Points
Figure 6
OUTPUT SPECTRUM
10 100 1k
Frequency (Hz)
0
−
20
−
40
−
60
−
80
−
100
−
120
−
140
−
160
Amplitude (dB)
10k 100k
High−Resolution Mode
f
IN
= 1kHz,
−
20dBFS
32,768 Points