Datasheet

ADS1244
6
SBAS273
www.ti.com
TYPICAL CHARACTERISTICS (Cont.)
At T
A
= +25°C, AVDD = +5V, DVDD = +3V, f
CLK
= 2.4576MHz, and V
REF
= +2.5V, unless otherwise specified.
HISTOGRAM OF OUTPUT DATA
ppm of FSR
Number of Occurences
–3 –2 –10 1 2 3 4–4
1200
1000
800
600
400
200
0
INPUT-REFERRED NOISE vs V
REF
V
REF
(V)
Input-Referred Noise (µV, rms)
321450
14
13
12
11
10
9
8
7
6
ANALOG PSRR vs FREQUENCY
Frequency (Hz)
Magnitude (dB)
1k10010 10k 100k1
120
100
80
60
40
20
0
DIGITAL PSRR vs FREQUENCY
Frequency (Hz)
Magnitude (dB)
1k10010 10k 100k1
120
100
80
60
40
20
0
CMRR vs FREQUENCY
Frequency (Hz)
Magnitude (dB)
1k10010 10k 100k1
160
140
120
100
80
60
40
20
0