TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, AVDD = +5V, DVDD = +3V, fCLK = 2.4576MHz, and VREF = +2.5V, unless otherwise specified.
HISTOGRAM OF OUTPUT DATA
INPUT-REFERRED NOISE vs VREF
1200
1000
800
600
400
200
0
14
13
12
11
10
9
8
7
6
–4
–3
–2
–1
0
1
2
3
4
0
1
2
3
4
5
ppm of FSR
VREF (V)
ANALOG PSRR vs FREQUENCY
DIGITAL PSRR vs FREQUENCY
120
100
80
60
40
20
0
120
100
80
60
40
20
0
1
10
100
1k
10k
100k
1
10
100
1k
10k
100k
Frequency (Hz)
Frequency (Hz)
CMRR vs FREQUENCY
160
140
120
100
80
60
40
20
0
1
10
100
1k
10k
100k
Frequency (Hz)
ADS1244
6
SBAS273
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