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SBAS288D − JUNE 2003 − REVISED AUGUST 2004
TYPICAL CHARACTERISTICS (continued)
T
A
= +25°C, AVDD = 5V, DVDD = 1.8V, f
CLKIN
= 7.68MHz, PGA = 1, and V = 2.5V, unless otherwise noted.
REF
NOISE HISTOGRAM
NOISE HISTOGRAM
100
80
60
40
20
0
25
20
15
10
5
PGA = 1
Data Rate = 2.5SPS
Buffer = Off
256 Readings
Buffer = Off
256 Readings
PGA = 64
Data Rate = 2.5SPS
0
−
−
−
−
−
1
5
4
3
2
0
1
2
3
4
5
Output Code (LSB)
Output Code (LSB)
NOISE HISTOGRAM
NOISE HISTOGRAM
25
20
15
10
5
25
20
15
10
5
Buffer = Off
4096 Readings
PGA = 1
Data Rate = 1kSPS
PGA = 64
Data Rate = 1kSPS
Buffer = Off
4096 Readings
0
0
Output Code (LSB)
Output Code (LSB)
NOISE HISTOGRAM
NOISE HISTOGRAM
25
20
15
10
5
25
20
15
10
5
PGA = 64
Data Rate = 30kSPS
Buffer = Off
4096 Readings
PGA = 1
Data Rate = 30kSPS
Buffer = Off
4096 Readings
0
0
Output Code (LSB)
Output Code (LSB)
9
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